KR100874409B1

KR100874409B1 - Double computer

Info

Publication number: KR100874409B1
Application number: KR1020080003604A
Authority: KR
Inventors: 임영훈
Original assignee: (주)테크모아
Priority date: 2008-01-11
Filing date: 2008-01-11
Publication date: 2008-12-17

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual computer, comprising two hardware systems that are network-connected and completely physically independent so as to be connected to different specific networks, and by controlling software switching means included in each hardware system. It can be connected to two different networks, namely an internal network (eg intranet) and an external network (eg internet).

According to the present invention, a software method of selecting a network switching icon displayed on a computer monitor screen while both an internal network motherboard and an external network motherboard is booted can be used to easily connect to an internal network or an external network without rebooting. In addition, data read and write to disk drives (FDD, ODM) cannot be restricted while switching to a specific network, so that external leakage of important data from the network can be prevented. Internet) When connected to the internal network (intranet), the connection to the internal network (physical network) is physically blocked, so important data used in the internal network (intranet) is exposed and leaked to the outside by hackers, or used in the internal network by various viruses or malware. The conventional problem of losing important data can be completely solved.

Description

Double computer {Double computer}

FIELD OF THE INVENTION The present invention relates to a computer, and more particularly to a dual computer having two physically completely independent hardware systems for connecting to two different networks, i.e., an internal network (e.g. intranet) and an external network (e.g. internet). It is about.

1 is a diagram illustrating a state where a conventional computer is connected to an intranet or the Internet, and one computer 10 or 20 is connected to one network.

In this case, each computer 10, 20 has a network connection setting such that a network access card (LAN) is connected to a specific network (e.g., an intranet, the Internet, etc.), and typically a power supply (POWER) and a motherboard Hardware system including (MB; MotherBoard), Hard Disk Drive (HDD; Hard Disk Drive), Floppy Disk Drive (FDD) and Optical Disk Drive (ODD) such as CD-RW, DVD-RW, etc. And an input / output device (11, 21) consisting of a keyboard, a mouse, a monitor, a speaker, and the like.

As described above, one computer 10 or 20 accesses one network, and thus, a plurality of computers corresponding to the number of networks must be installed in order to access a plurality of networks. It is inconvenient to increase the number and use a computer that is configured to connect to a specific network every time it connects to that network.

Therefore, in order to solve this inconvenience, as shown in FIG. 2, a computer 30 having a network connection setting to be connected to a specific network is developed through a network switching device 30a connected to a plurality of networks such as an intranet or the Internet. It is.

As shown in FIG. 2, the computer 30 capable of accessing a plurality of networks includes a power supply (POWER), a motherboard (MB; MotherBoard), a hard disk drive (HDD; Hard Disk Drive), and a floppy disk drive (FDD). And a hardware system including an optical disk drive (ODD) such as a CD-RW, a DVD-RW, and the like, and are connected to an input / output device 31 including a keyboard, a mouse, a monitor, a speaker, and the like.

However, as shown in FIG. 2, when the computer 30 configured for network connection is connected to a specific network through a network switching device 30a connected to a plurality of networks, the network to which the user wants to connect can be switched. Each time, there is an inconvenience of rebooting the computer 30 so as to be connected to the network, and there is a detrimental factor in the continuity of work and user convenience.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to include two hardware systems, each of which has a network connection set up to be connected to different specific networks and are completely physically independent, and included in each hardware system. It is to provide a dual computer that can be connected to the two different networks, that is, the internal network (for example, intranet) and the external network (for example, the Internet) by software controlled network switching means.

In order to achieve the object of the present invention as described above, the dual computer according to the present invention, the internal network disk drive; Disk drives for external networks; The disk drive for the internal network is controlled, and the network connection is set to be connected to the internal network. If the network designation is the internal network at boot time, the I / O connection signal is output to connect with the computer input / output device and the internal network connection status is displayed on the computer monitor screen. If the network switching menu is selected from the function selection menu of the network switching icon, the network switching software is run to output a network switching command from the internal network to the external network, and then access the computer input / output device. An internal network motherboard for blocking and connecting to the computer input / output device when an external internal network connection signal is applied, and displaying a network switching icon indicating an internal network connection state on a computer monitor screen; It is booted together with the internal network motherboard to control the disk drive for the external network, and the network connection is set to be connected to the external network. Displays the network switching icon indicating the external network connection status on the computer monitor screen, and when the network switching menu is selected from the function selection menu of the network switching icon, operates the network switching software to output a network switching command from the external network to the internal network. An external network motherboard which blocks the connection with the computer input / output device and connects with the computer input / output device when the external external network connection signal is applied and displays a network switching icon indicating the external network connection state on the computer monitor screen; The communication between the internal network motherboard and the computer input / output device is relayed, and when a network switching command of the internal network motherboard is applied, the connection between the internal network motherboard and the computer input / output device is blocked and the internal network connection blocking signal is externally transmitted. When the input / output connection signal of the internal network motherboard or the external network connection blocking signal is input from the outside, the internal network connection signal is connected to the internal network motherboard and the internal network connection signal is applied to the internal network motherboard at the same time. A first network switching unit; The communication between the external network motherboard and the computer input / output device is relayed, and when the network switching command of the external network motherboard is applied, the connection between the external network motherboard and the computer input / output device is interrupted and simultaneously connected to the first network switching unit. Applies an external network connection blocking signal and connects a communication path between the computer input / output device, the first network switching unit and the internal network motherboard, and connects the input / output connection signal of the external network motherboard or the internal network connection of the first network switching unit. A second network switching unit for connecting the external network motherboard and the computer input / output device and applying an external network connection signal to the external network motherboard when a blocking signal is input; And a power supply device for supplying driving power to the internal network disk drive, an external network disk drive, an internal network mother board, an external network mother board, a first network switching unit, and a second network switching unit. do.

In the dual computer according to the present invention, the internal network motherboard drives the network switching software when the drive lock menu is selected from the function selection menu of the network switching icon displayed on the computer monitor screen. Read / write data for FDD, ODD) is impossible.

In the dual computer according to the present invention, the external network motherboard drives the network switching software when the drive lock menu is selected from the function selection menu of the network switching icon displayed on the computer monitor screen. Read / write data for FDD, ODD) is impossible.

According to the present invention as described above, the network connection settings are already set by a software method of selecting a network switching icon displayed on the computer monitor screen while both the internal network motherboard and the external network motherboard are booted. It is possible to connect to the internal network (eg intranet) or external network (eg internet) by simply selecting the hardware system for internal network and the external network hardware that are completely physically separated without rebooting. In the switched state, data read and write on the disk drive (eg FDD, ODD) is impossible to be restricted, so that external leakage of important data from the network can be blocked, especially when the external network (Internet) is connected. In the internal network (intranet) because the connection to the network (intranet) is physically blocked The conventional problem that important data has been corrupted by that was used in the internal network, or if it is important for the data exposed by a hacker who leaked to the outside for various viruses or malicious code can be completely eliminated.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

3 to 8, the dual computer 100 according to the present invention includes an internal network hardware system and an external network hardware system, which are physically completely separated from each other, a power supply device 107 for supplying power to these systems; And a computer input / output device 110 including a conventional keyboard, mouse, monitor, speaker, and the like.

The internal network hardware system includes an internal network disk drive 101, an internal network motherboard 103, and a first network switching unit 105.

The external network hardware system includes an external network disk drive 102, an external network motherboard 104, and a second network switching unit 106.

As the internal network disk drive 101, a hard disk drive HDD1 is basically used, and a floppy disk drive FDD1, an optical disk drive, and the like are used as necessary.

A hard disk drive (HDD2) is basically used as the external disk drive (102), and a floppy disk drive (FDD2) or an optical disk drive (ODD2) is used as necessary.

The internal network mother board 103 and the external network mother board 104 are booted together by receiving power by a single power supply device 107, and connected to or disconnected from the computer input / output device 110 when the network is switched. It will not reboot.

The internal network mother board (103) controls the internal network disk drive (101), and has a network connection setting to be connected to the internal network. And a network switching icon indicating an internal network connection state on a computer monitor screen.If a network switching menu is selected from a function selection menu of the network switching icon, the network switching software is driven to operate the external network in the internal network. After outputting the network switching command to the computer input and output device 110 disconnects. At this time, the internal network motherboard 103 waits for reconnection with the computer input / output device 110 according to the network switching while maintaining the booting state.

The internal network mother board 103 connects with the computer input / output device 110 when an external internal network connection signal is applied, and displays a network switching icon indicating an internal network connection state on a computer monitor screen.

When the drive lock menu is selected from the function selection menu of the network switching icon displayed on the computer monitor screen, the internal network motherboard 103 drives the network switching software to be included in the internal network disk drive 101. Data read and write to (FDD1) or optical disk drive (ODD1) is restricted from being impossible, and a password input is requested when a drive unlock request is made.

The external network motherboard 104 is booted together with the internal network motherboard 103 to control the disk drive 102 for the external network, the network connection is set to be connected to the external network, the network designation at boot In case of an external network, an input / output connection signal is output to connect to the computer input / output device 110, and a network switching icon indicating an external network connection status is displayed on a computer monitor screen, and a network switching menu is selected from a function selection menu of the network switching icon. When the network switching software is driven, the network switching command is output from the external network to the internal network, and then the connection to the computer input / output device 110 is blocked. At this time, the external network motherboard 104 waits for reconnection with the computer input / output device 110 according to the network switching while maintaining the booting state.

When an external external network connection signal is applied, the external network motherboard 104 connects with the computer input / output device 110 and displays a network switching icon indicating an external network connection state on the computer monitor screen.

When the drive lock menu is selected from the function selection menu of the network switching icon displayed on the computer monitor screen, the external network motherboard 104 drives the network switching software to be included in the external network disk drive 102. Restricts reading and writing of data to (FDD2) or optical disk drive (ODD2), and asks for password input when unlocking a drive.

When the screen lock menu is selected from the function selection menu of the network switching icon displayed on the computer monitor screen, the internal network motherboard 103 and the external network motherboard 104 operate the network switching software to immediately monitor the computer without waiting time. It puts the screen to sleep mode and asks for a password to unlock the screen.

As shown in FIG. 8, the internal network motherboard 103 and the external network motherboard 104 drive network switching software when a setting menu is selected from a function selection menu of a network switching icon displayed on a computer monitor screen. It provides a screen for specifying a network when booting, unlocking a drive, or unlocking a screen. The user can specify the network to connect to when the computer first boots up, and can freely specify and change the desired password. have.

The first network switching unit 105 relays communication between the internal network motherboard 103 and the computer input / output device 110, and when the network switching command of the internal network motherboard 103 is applied, the internal network Blocks the connection between the mother board 103 and the computer input / output device 110 and outputs an internal network connection blocking signal to the outside, and an input / output connection signal of the internal network mother board 103 or an external network connection blocking signal from the outside is input. When the internal network motherboard 103 is connected to the computer input / output device 110, an internal network connection signal is applied to the internal network motherboard 103.

The second network switching unit 106 relays the communication between the external network motherboard 104 and the computer input / output device 110, and when the network switching command of the external network motherboard 104 is applied, the external network At the same time as the connection between the motherboard 104 and the computer input / output device 110 is interrupted, an external network connection blocking signal is applied to the first network switching unit 105, and the computer input / output device 110 and the first network switching unit are applied. When the communication path between the 105 and the internal network motherboard 103 is connected, and the input / output connection signal of the external network motherboard 104 or the internal network connection blocking signal of the first network switching unit 105 is inputted, The external network motherboard 104 and the computer input / output device 110 are connected to each other and an external network connection signal is applied to the external network motherboard 104.

The power supply device 107 is the internal network disk drive 101 and the external network disk drive 102, the internal network motherboard 103, the external network motherboard 104, the first network switching unit 105, The driving power is supplied to the second network switching unit 106.

The dual computer 100 according to the present invention configured as described above operates as follows, and powers on the internal network to be connected when booting both the internal network mother board 103 and the external network mother board 104. It is preferable to designate as.

The dual computer 100 according to the present invention comprises two hardware systems that are physically completely independent to connect to two different networks, i.e., an internal network (e.g., an intranet) and an external network (e.g., the Internet), respectively. Since the hardware system is configured to connect to the internal network or the external network, the user does not need to set up a separate network connection every time the network is switched.

Since the internal network mother mode 103 and the external network mother board 104 maintain a booting state, a network switching operation is performed by switching a connection state or a connection blocking state with the computer input / output device 110, so a reboot is required when switching a network. There is no.

The internal network mother board 103 and the external network mother board 104 may be installed and used with different OS, and if the network designation at booting, the internal network outputs an input / output connection signal and connects with the computer input / output device 110. By running the network switching software, a network switching icon indicating the internal network connection status or the external network connection status is displayed on the computer monitor screen to inform the user whether the currently selected network is the internal network or the external network.

For reference, typical Windows desktops include a Start button that opens the Start menu, a Quick Access Toolbar that is located to the right of the Start button and displays an icon that allows you to run the program with a single click, and the task pane currently displayed on the desktop. A taskbar that displays the name of the window along with the name of the button, an input toolbar that allows you to quickly change the input language and keyboard layout, and a program and system-related messages (volumes, And a notification area including a clock and displaying icons indicating the security status. The network switching icon according to the present invention is preferably displayed on the notification area of the Windows desktop.

For example, in FIG. 4, the network switching icon displayed in the notification area located on the right side of the input tool bar of the Windows desktop is displayed as a letter “my” in a green circle, indicating that the current internal network is selected. The switch icon is marked with the word "out" in the red circle to indicate that the external network is currently selected.

Hereinafter, first, a description will be given of the operation process of the dual computer 100 according to the present invention to switch from the internal network to the external network.

As shown in FIG. 8, if the network designation is an internal network at boot, even if the dual computer 100 according to the present invention is powered on to boot both the internal network motherboard 103 and the external network motherboard 104, Only the internal network mother board 103 outputs an input / output connection signal.

Accordingly, the hardware system for the internal network is driven, and communication between the computer input / output device 110, the first network switching unit 105, and the internal network motherboard 103 is performed by the second network switching unit 106. The path is connected.

In this case, as shown in FIG. 4, the network switching icon displayed in the notification area of the Windows desktop is displayed in a green circle on the computer monitor screen included in the computer input / output device 110 connected to the internal network motherboard 103. The letter “my” indicates that the current internal network (eg, intranet) is selected.

In addition, since the dual computer 100 can transmit and receive data only through the internal network in a state where the physical network is completely blocked from the external network (for example, the Internet), important data used in the internal network (intranet) is exposed to the external network. It is possible to completely solve the conventional problem of leaking to the outside by hackers through the Internet or damaging important data used in the internal network by various viruses or malicious codes.

In this state, if the user operates the mouse included in the computer input / output device 110 and selects the network switching menu from among the function selection menus of the network switching icon displayed on the computer monitor, as shown in FIG. Motherboard 103 drives the network switching software to output a network switching command from the internal network to the external network to apply to the first network switching unit 105.

At this time, the first network switching unit 105 cuts off the connection between the internal network mother board 103 and the computer input / output device 110 and outputs an internal network connection blocking signal to the second network switching unit 106. Then, the second network switching unit 106 connects the external network motherboard 104 and the external network (Internet) and at the same time applies an external network connection signal to the external network motherboard 104 and the The communication between the external network motherboard 104 and the computer input / output device 110 is relayed.

Accordingly, the external network motherboard 104 is connected to the computer input / output device 110 and is displayed in the notification area of the Windows desktop screen as shown in FIG. 6 on the computer monitor screen included in the computer input / output device 110. The displayed network switching icon is displayed in a red circle with the word "outside" to indicate a state in which an external network (eg, the Internet) is currently selected.

In addition, since the dual computer 100 can transmit and receive data only through the external network in a state that is physically blocked from the internal network (for example, an intranet), the important data used in the internal network (intranet) is exposed to the external network. It can completely solve the conventional problem of leaking to the outside by hackers through the Internet or damaging important data used in the internal network by various viruses or malicious codes.

In this state, if the user operates the mouse included in the computer input / output device 110 and selects the drive lock menu from the function selection menu of the network switching icon displayed on the computer monitor, as shown in FIG. Motherboard 104 runs network switching software to restrict data reads and writes to the external network disk drive 102, such as FDD2 and ODD2.

Subsequently, if a user requests a drive unlock by deselecting a drive lock menu that is already selected from a function selection menu of a network switch icon displayed on a computer monitor, the external network motherboard 104 may drive the network switch software. After requesting a password input that the user has previously designated or changed after designating the dual computer 100 through the password designation and change screen as shown in FIG. 8, the drive is unlocked only when the password is normally input.

On the contrary, if a user operates the mouse included in the computer input / output device 110 while moving away from the dual computer 100 or performing another task according to the present invention, as shown in FIG. When the screen lock menu is selected among the function selection menus of the network switching icon displayed on the screen, the external network motherboard 104 immediately switches the computer monitor screen to the power saving mode without waiting time by running the network switching software.

Subsequently, if the user requests a screen unlock request by deselecting a screen lock menu that is already selected among the function selection menus of the network switch icon displayed on the computer monitor, the external network motherboard 104 may drive the network switch software. After requesting a password input that the user has previously designated or changed after designating the dual computer 100 through the password designation and change screen as shown in FIG. 8, the screen is unlocked only when the password is normally input.

Next, the operation process of the dual computer 100 according to the present invention to switch from the external network to the internal network is as follows.

As shown in FIG. 6, the external network motherboard 104 is displayed on the computer monitor screen included in the computer input / output device 110, and the " external " Is displayed on the computer monitor as shown in FIG. 5 when the user operates a mouse included in the computer input / output device 110 in a state where an external network (eg, the Internet) is currently selected. When the network switching menu is selected from the function selection menu of the network switching icon, the external network motherboard 104 drives network switching software and outputs a network switching command from the external network to the internal network. )

In this case, the second network switching unit 105 cuts off the connection between the external network mother board 104 and the computer input / output device 110 and outputs an external network connection blocking signal to the first network switching unit 105. Then, the first network switching unit 105 connects the internal network motherboard 103 and the internal network (intranet), and simultaneously applies an internal network connection signal to the internal network motherboard 103, and The communication between the internal network motherboard 103 and the computer input / output device 110 is relayed.

Accordingly, the internal network motherboard 103 is connected to the computer input / output device 110 and displayed on the notification area of the Windows desktop screen as shown in FIG. 4 on the computer monitor screen included in the computer input / output device 110. The displayed network switching icon is displayed in the green circle with the letter "my" to indicate that the current internal network (eg, intranet) is selected.

In addition, since the dual computer 100 can transmit and receive data only through the internal network in a state where the physical network is completely blocked from the external network (for example, the Internet), important data used in the internal network (intranet) is exposed to the external network. It is possible to completely solve the conventional problems of leaking to the outside by hackers through the Internet or damaging important data used in the internal network by various viruses or malicious codes.

In this state, if the user operates the mouse included in the computer input / output device 110 and selects the drive lock menu among the function selection menus of the network switching icon displayed on the computer monitor, as shown in FIG. Motherboard 103 drives network switching software to restrict data reading and writing to the internal network disk drive 101 such as FDD1 and ODD1.

Thereafter, if the user releases the drive lock request by deselecting the drive lock menu that is already selected from the function selection menu of the network switch icon displayed on the computer monitor, the internal network motherboard 103 may be configured to run network switch software. Through the password assignment and change screen as shown in FIG. 8, the user requests a password input previously designated or changed after designation on his dual computer 100, and unlocks the drive only when the password is normally input.

On the contrary, if a user operates the mouse included in the computer input / output device 110 while moving away from the dual computer 100 or performing another task according to the present invention, as shown in FIG. When the screen lock menu is selected among the function selection menus of the network switching icon displayed on the screen, the internal network motherboard 103 immediately switches the computer monitor screen to the power saving mode without waiting time by running the network switching software.

Subsequently, if the user requests a screen unlock request by deselecting a screen lock menu that is already selected from the function selection menu of the network switch icon displayed on the computer monitor, the internal network motherboard 103 may be configured to run network switch software. After requesting a password input that the user has previously designated or changed after designating the dual computer 100 through the password designation and change screen as shown in FIG. 8, the screen is unlocked only when the password is normally input.

The dual computer according to the present invention described above is not limited to the above-described embodiment, and any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. The technical spirit is to the extent that various modifications can be made.

1 is a view showing a state where a conventional computer is connected to an intranet or the Internet.

Figure 2 is another embodiment showing a state in which a computer equipped with a conventional network switching device is connected to an intranet or the Internet.

3 is a block diagram of a dual computer according to the present invention.

4 is a screen showing a network switching icon according to the present invention a state in which the internal network is currently selected.

5 is a screen selection of the network switching menu of the function selection menu of the network switching icon according to the present invention.

6 is a screen showing a network switching icon according to the present invention a state in which an external network is currently selected.

7 is a screen of selecting a drive lock menu of the function selection menu of the network switching icon according to the present invention.

8 is a password designation and change screen according to the present invention.

10,20,30: Computers 11,21,31: I / O devices

30a; Network Switching Device 100: Dual Computer

101: disk drive for internal network 102: disk drive for external network

103: internal mesh motherboard 104: external mesh motherboard

105: first network switching unit 106: second network switching unit

107: power supply device 110: computer input and output device

Claims

An internal network disk drive 101;

An external network disk drive 102;

The internal network disk drive 101 is controlled, and the network connection is set to be connected to the internal network. If the network designation is the internal network at boot time, the I / O connection signal is output to connect with the computer input / output device 110 and the computer monitor screen. A network switching icon indicating an internal network connection status is displayed on the screen.If the network switching menu is selected from the function selection menu of the network switching icon, the network switching software is executed to output a network switching command from the internal network to the external network. When the connection to the input / output device 110 is cut off and the external internal network connection signal is applied, the connection to the computer input / output device 110 is performed and a network switching icon indicating the internal network connection state is displayed on the computer monitor screen, and the computer monitor screen is displayed. When the setting menu is selected from the function selection menu of the network switching icon displayed on the It provides a screen for specifying a password when booting, unlocking a drive, or unlocking a screen by booting the hardware, and switching to a network when the drive lock menu is selected from the function selection menu of the network switching icon displayed on the computer monitor screen By operating the software, the data read and write of the floppy disk drive (FDD1) or the optical disk drive (ODD1) included in the disk drive 101 for the internal network is impossible to be restricted, and when the drive unlock request is requested, an internal password request is requested. Mesh mother board 103;

Booted together with the internal network motherboard 103 to control the external disk drive 102, the network connection is set to be connected to the external network, and if the network designation at boot, the external network outputs an input and output connection signal It is connected to the computer input / output device 110 and displays a network switching icon indicating the external network connection status on the computer monitor screen, and when the network switching menu is selected from the function selection menu of the network switching icon, the network switching software is driven to the external network. Outputs the network switching command from the internal network to the internal network, and then disconnects the computer input / output device 110. When an external external network connection signal is applied, the computer is connected to the computer input / output device 110 and the external network connection state is displayed on the computer monitor screen. Displays the network switching icon that indicates and selects the function of the network switching icon displayed on the computer monitor screen. When the setup menu is selected from the menu, it runs the network switching software to provide a password setting and changing screen for network designation, drive unlocking, or screen unlocking at boot time, and the function selection menu of the network switching icon displayed on the computer monitor screen. If the drive lock menu is selected, the network switching software is executed to restrict data read and write to the floppy disk drive (FDD2) or the optical disk drive (ODD2) included in the external disk drive 102, and lock the drive. An external network motherboard 104 for requesting a password input upon a release request;

Relays communication between the internal network motherboard 103 and the computer input / output device 110, and when a network switching command of the internal network motherboard 103 is applied, the internal network motherboard 103 and the computer input / output device ( And disconnects the internal network connection blocking signal to the outside, and when the input / output connection signal of the internal network mother board 103 or the external network connection blocking signal from the outside is inputted, the internal network mother board 103 A first network switching unit (105) for connecting a computer input / output device (110) and simultaneously applying an internal network connection signal to the internal network motherboard (103);

The communication between the external network motherboard 104 and the computer input / output device 110 is relayed, and when a network switching command of the external network motherboard 104 is applied, the external network motherboard 104 and the computer input / output device ( At the same time, the external network connection blocking signal is applied to the first network switching unit 105 and the computer input / output device 110, the first network switching unit 105, and the internal network motherboard 103 are blocked. And a communication path between the external network motherboard and the computer when the input / output connection signal of the external network motherboard 104 or the internal network connection disconnection signal of the first network switching unit 105 is input. A second network switching unit 106 connecting the input / output device 110 and applying an external network connection signal to the external network mother board 104; And

The internal network disk drive 101, the external network disk drive 102, the internal network motherboard 103, the external network motherboard 104, the first network switching unit 105, the second network switching unit 106 A power supply unit 107 for supplying driving power to the internal network mother board 103 and the external network mother board 104 to boot together;

Dual computer, characterized in that consisting of.

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