KR19980074056A - Power switch of microprocessor for computer - Google Patents

Abstract

The present invention relates to a power switch of a microprocessor for a computer, the socket for fixing or removing a microprocessor, the first contact (A) configured on one side of the plate 36 of the socket 30, and the socket 30 The second contact point (B) which is configured to correspond to the first contact point (A) on one side of the lever (10), and is in contact with the first contact point (A) when the lever (10) is locked, and the first input terminal to the first contact point (A). The driving power (+ Vcc) is applied through the one contact A and the resistor R1, and is input from the NOR gate 40 to which the main power switch of the computer is connected to the second input terminal, and from the output terminal of the NOR gate 40. The power supply unit 50 for turning on or off the power applied to the microprocessor 20 by the received signal is included and when the lever 10 of the socket 30 is released while the power is being supplied to the microprocessor 20 without permission. By turning off the power of the microprocessor 20 It prevented the loss.

Description

Power switch of microprocessor for computer

The present invention relates to a computer, and more particularly, to a power switch of a microprocessor for a computer in which a power switch is configured in a microprocessor fixing socket mounted on a motherboard.

In the related art, a microprocessor for a computer shown in FIG. 1 is mounted in a socket. The microprocessor 20 includes a large scale integrated circuit (LSI) using a central processing unit (CPU), which is a logic circuit of an operation unit and a control unit. ; A large-scale integrated circuit), which is configured to have a function as a calculator by connecting an input / output interface circuit that controls a memory and an input / output device centered on a microprocessor collected on a silicon chip, and a central processing unit of a single chip is generally called a microprocessor. do. In addition, a single chip microcomputer is a collection of a CPU, a memory, and even a part of an interface circuit in one LSI. The microprocessor 20 is a main computer and is inserted into and fixed to a socket 30 configured at one side of the motherboard. That is, when the microprocessor 20 is inserted into and fixed to the socket 30, a plurality of pins of the microprocessor 20 are inserted into the plurality of insertion holes formed in the socket 30, and then configured on one side of the socket 30. Press the lever 10 to fix it. At this time, the pin of the microprocessor 20 is firmly fixed to the insertion hole by a fixing means (not shown) connected to the lever 10. After operating the lever 10, the microprocessor 20 cannot be detached without permission. This is to prevent the microprocessor 20 from being released from the socket 30 while the computer is shocked from the outside or the motherboard is mounted vertically. In addition, in order to separate the microprocessor 20 fixed to the socket 30, when the lever 10 is lifted upward, the pins of the fixed microprocessor 20 are released. In this case, the microprocessor 20 is removed. When picked up by hand, the microprocessor 20 is detached from the socket 30. When the microprocessor 20 is detached from the socket 30, the microprocessor 20 may be defective or misinserted, replaced, or replaced.

However, in the related art, when the microprocessor is inserted into the socket and the microprocessor is removed, if the microprocessor is removed from the socket by operating the lever of the socket while the computer is being powered by the user's carelessness, the insertion hole of the socket and Friction or overcurrent occurs between the pins of the microprocessor, causing the microprocessor to fail.

The present invention has been made to solve the above problems, the power switch of the computer microprocessor to turn on or off the power applied to the microprocessor through the socket when operating the lever by configuring the power switch on one side of the socket The purpose is to provide.

1 is a view showing a state where a conventional microprocessor for a computer is mounted in a socket,

2 is a view showing a state in which a power switch is mounted on a socket of a microprocessor for a computer according to the present invention;

3 is a circuit diagram of a power switch of a computer microprocessor according to the present invention;

4 is a table relating to the input and output of the NOR gate applied in the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: lever 20: microprocessor

30: socket 32, 34: contact

36: plate 40: NOR gate

50: power supply R1: resistance

In order to achieve the above object, the present invention provides a socket for fixing an inserted microprocessor, comprising: a first contact configured at one side of a plate of the socket and a second contact configured at one side of a lever of the socket; A second contact contacting the first contact when locked, a NOR gate to which a driving power is applied through a resistance and the first contact to a first input terminal, a main power switch of a computer connected to a second input terminal, and the NOR gate Characterized in that it comprises a power supply for turning on or off the power applied to the microprocessor by the signal input from the output terminal of the.

Hereinafter, the power switch of the computer microprocessor of the present invention will be described with reference to the accompanying drawings.

2 is a view showing a state in which a power switch is mounted on a socket of a microprocessor for a computer according to the present invention.

The socket 30 for inserting and fixing the microprocessor 20 includes a plate 36 in which an insertion hole into which a pin of the microprocessor 20 is inserted is formed, and a lever 10 configured at one side end of the plate 36. . The first contact A is formed on the side of the plate 36 on which the lever 10 is operated, and the second contact B is formed on one side of the lever 10 corresponding to the first contact A. That is, in the state in which the lever 10 is operated to fix the microprocessor 20, the first contact point A and the second contact point B come into contact with each other to maintain an electrically conductive state, and the lever 10 In the pulled up state, the first contact point A and the second contact point B are turned off to block the driving power (+ Vcc) by the microprocessor 20. For example, when the first contact A and the second contact B come into contact with each other, the signal of the first contact becomes the ground state GND, and in the isolated state, the signal of the first contact A remains at + 5V. Done. Thus, in the locked state where the lever 10 of the socket 30 holds the microprocessor 20, the first contact A and the second contact B become conductive, while the lever 10 is in the microprocessor state. In the unlocked state where (20) can be taken out, the first contact point A and the second contact point B are cut off.

The first contact A is wired to the A terminal on the circuit board, and the second contact B is wired to the B terminal on the circuit board. At this time, the wiring processes such that interference does not occur in the range in which the lever 10 of the socket 30 operates.

3 is a circuit configuration of a power switch of a computer microprocessor according to the present invention, in which the first contact A formed on the plate 36 of the socket 30 is wired to the terminal A on the circuit board. A terminal is connected to the first input terminal of the NOR gate 40, the driving power supply (+ 5V) is connected in parallel to the first input terminal through a resistor (R1). At this time, the second contact point B formed on the lever 10 of the socket 30 is wired to the B terminal on the circuit board, and the B terminal is in a ground (GND) state. The second input terminal of the NOR gate 40 is connected to a main power switch applied to a computer. That is, the computer is supplied with power from the outside to the second input terminal of the NOR gate 40 in the on state.

After the logical mismatch is applied to the first input terminal and the second input terminal of the NOR gate 40, the NOR gate 40 outputs the calculated logical signal value through the output terminal. The logical value output from the output is '1' (+ 5V) or '0' (GND).

The power supply unit 50 intercepts the power for driving the microprocessor 20 by a logic signal applied from the output terminal of the NOR gate 40. That is, when '1' is logically input from the NOR gate 40, the power supply unit 50 supplies power to the on state, and when '0' is input, the power is cut off to the off state.

Referring to the operation of the power switch of the microprocessor for a computer of the present invention made in this way in detail, the plate 36 of the socket 30, the microprocessor 20 is mounted in the state that the power is applied to the computer from the outside. When the first contact point A and the second contact point B of the lever 10 are in contact with each other, the driving power is applied to the microprocessor 20. That is, when the lever 10 is in the locked state, since the first contact point A and the second contact point B are in a conducting state, the driving power (+ 5V) is connected to terminals A and B on the circuit board through the resistor R1. Ground state is reached via. At this time, a logical '0' (GND) is input to the first input terminal of the NOR gate 40.

However, when the lever 10 is operated and the socket 30 is in the unlocked state, the first contact A and the second contact B are turned off to isolate the A and B terminals on the circuit board. At this time, the driving power (+ 5V) is applied to the first input terminal of the NOR gate 40 as a logical '1' (+ 5V) through the resistor R1. Therefore, when the first contact A and the second contact B are turned on, no signal is input to the first input terminal of the NOR gate 40, but the first contact A and the second contact B are not. In this off state, driving power (+ 5V) is applied to the first input terminal of the NOR gate 40.

In addition, since the main power switch of the computer is connected to the second input terminal of the NOR gate 40, a logical '0' is input when the main power switch is turned on, and a logical '1' is input when the main power switch is turned off.

As a result of the logical signals applied to the first and second input terminals of the NOR gate 40, the NOR gate 40 has the same truth value as in the diagram of input and output of FIG. That is, when both the first input terminal and the second input terminal of the NOR gate 40 receive a low signal of 0 V, the NOR gate 40 outputs a high signal of +5 V to the output terminal after performing a logical mismatch. If either the first input terminal or the second input terminal is in a high state, a low signal of 0V is output to the output terminal of the NOR gate 40. When a high signal of + 5V is applied to the power supply unit 50 at the output terminal of the NOR gate 40, the power supply unit 50 outputs driving power to the microprocessor 20 and each peripheral device, and the NOR gate 40 When the low signal of the ground state GND is applied to the power supply unit 50 at the output terminal, the power supply unit 50 cuts off the driving power applied to the microprocessor 20 and each peripheral device.

When the main power switch of the computer applied to the second input terminal of the NOR gate 40 is turned off, the power supply unit 50 does not have power applied from the outside, and thus powers the peripheral device and the microprocessor 20 of the computer. It is in a state that does not supply. Therefore, when the power supply 50 is applied to the microprocessor 20 when the user carelessly or arbitrarily switches the lever 10 of the socket 30 from the locked state to the unlocked state while the power is supplied to the second input terminal. The driving power may be cut off to prevent loss of the microprocessor 20.

As described above, the power switch of the microprocessor for a computer of the present invention is formed by inserting the microprocessor or fixing the contacts corresponding to one side of the lever of the socket and the plate of the socket to release the fixed microprocessor, respectively. If the lever of the socket is released by the user's carelessness while the power is being applied to the computer, the driving power applied from the power supply can be cut off to prevent the loss due to the unauthorized removal of the microprocessor. There is an increased effect.

Claims (2)

A socket for securing or removing a microprocessor, A first contact configured at one side of the plate of the socket, A second contact configured to correspond to the first contact on one side of the lever of the socket, the second contact being in contact with the first contact when the lever is locked; A NOR gate to which a driving power is applied to the first input terminal through the first contact and a resistor, and a main power switch of the computer is connected to the second input terminal; And a power supply unit for turning on or off power applied to the microprocessor by a signal input from an output terminal of the NOR gate. The power supply unit of claim 1, wherein the power output from the output terminal of the power supply unit is cut off when the driving power is applied from the first input terminal and the second input terminal, and the power supply unit is turned off when any one of the first input terminal and the second input terminal is grounded. The power switch of the computer microprocessor, characterized in that the output is switched to the on state to supply power.