CN112540945A - Accounting special computer with novel keyboard - Google Patents
Accounting special computer with novel keyboard Download PDFInfo
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- CN112540945A CN112540945A CN202110134174.7A CN202110134174A CN112540945A CN 112540945 A CN112540945 A CN 112540945A CN 202110134174 A CN202110134174 A CN 202110134174A CN 112540945 A CN112540945 A CN 112540945A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a special computer for accountants with a novel keyboard, which comprises a computer host, wherein a cable of the computer host is connected with a display and a mouse, a shell of the computer host is not provided with a starting button, a starting controller is arranged in the computer host, and the novel keyboard is provided with a dial switch and a button switch for inputting a starting password to control starting operation. The novel keyboard is reasonable in design, simple in structure and easy to manufacture, and the calculator is arranged at one side of the novel keyboard, so that the functions of the keyboard are increased, and the occupied space is reduced; the invention greatly enhances the starting encryption control of the computer special for accountants, effectively puts an end to the possibility that an illegal person starts the computer special for accountants, and is beneficial to realizing the confidential work.
Description
Technical Field
The invention relates to a computer, in particular to a special computer with a novel keyboard for accountants.
Background
At present, accounting computers in the prior art are only ordinary computers. The keyboard has no non-wired or wireless structure and is not provided with a calculator, and the calculator is used in accountants with higher frequency and often needs to be additionally provided with a computer, so that the space of an accounting desk is occupied, and the trouble of searching for the calculator everywhere in use exists. The main thing is that the computers used for accounting all store a large amount of enterprise and public affairs secret data and various data, and such data and data are strictly confidential and do not allow other people to read, modify and take, so the problem that the opening of the computer by illegal people must be considered in enterprise and public affairs accounting is avoided. The existing computer only adopts the password carried by the system to control the computer to enter the system, but the password is easy to crack and has poor confidentiality. The device for protecting the computer from being started by using a fingerprint or facial recognition mode is convenient to apply and not easy to crack, but the protection device works by using a mode of controlling the power supply of the computer, so that illegal personnel can be completely connected with the power supply to start and steal data. Therefore, a highly confidential accounting computer is not required.
Disclosure of Invention
The invention aims to provide a special accounting computer with a novel keyboard aiming at the defects in the prior art.
The technical scheme is as follows: the computer with the novel keyboard special for the accountant comprises a computer host, wherein the computer host is connected with a display and a mouse through a cable, the computer host is connected with the novel keyboard through infrared rays for data transmission, a starting button is not arranged on a shell of the computer host, a starting controller is arranged in the shell of the computer host, the output end of the starting controller is connected with a starting circuit, and the control end of the starting controller is connected with a connecting jack arranged on the shell; a calculator is arranged at one side of the novel keyboard, a left leg and a right leg which can rotate are respectively arranged at two sides of the upper part of the novel keyboard, rotating shafts of the left leg and the right leg are respectively connected with a left drive plate switch and a right drive plate switch in the keyboard, and the contact conversion of the left drive plate switch or the right drive plate switch can be driven by pulling the left leg or the right leg; the end surface of the top of the novel keyboard is provided with at least two key switches, the end surface of one side part of the novel keyboard is provided with a socket, and the socket is provided with a password generator capable of being plugged; the key switch, the left drive plate switch, the right drive plate switch and the socket are connected with one end of a control circuit, and the other end of the control circuit is provided with a connecting plug; the connecting plug is connected with the connecting jack in a plug-in manner; the password generator is in signal connection with the starting controller through radio; the left dial switch, the right dial switch, the key switch and the password generator are operated in a matching way to send out a radio password signal, and the radio password signal drives the startup controller to work to complete the startup work of the computer host.
The password generator is a wireless coding circuit arranged in a shell; the start-up controller comprises a wireless decoding circuit and a signal processor, wherein the positive power end of the wireless decoding circuit is connected with the positive power end of the signal processor, the positive end of a capacitor, one end of a key switch, one end of an alarm horn, one power end of a relay, the negative end of a first diode and the negative end of a second diode, the positive end of the second diode is the positive power end of the start-up controller, the positive end of the first diode is connected with the other power end of the relay and the collector of a second triode, the base of the second triode is connected with the output end of the signal processor, the other end of the alarm horn is connected with the collector of the first triode, the base of the first triode is connected with the other output end of the signal processor, the signal output end of the wireless decoding circuit is connected with the signal input end of the signal processor, the negative power end of the wireless decoding circuit is connected with the negative power end of, The emitter of the first triode, the emitter of the second triode, a stationary contact of the left dial switch and the negative power end of the wireless coding circuit, the movable contact of the left dial switch is connected with the movable contact of the right dial switch, one stationary contact of the right dial switch is connected with the negative end of the capacitor and serves as the negative power end of the power-on controller, and the signal control end of the wireless coding circuit is connected with the other end of the key switch; two ends of the normally open contact of the relay are connected with a starting circuit; the left dial switch and the right dial switch are matched for password operation to control the power supply of the password generator and the starting controller, and the password can be changed by changing the positions of the static contacts of the left dial switch and the right dial switch; the wireless coding circuit sends a coding signal according to the rule by pressing the sequence and the times of each key switch, the coding signal of the rule is received by the wireless decoding circuit and is transmitted to the signal processor for identification, the signal processor drives the second triode to be conducted once when the rule is in accordance with the set, the relay acts to connect the starting circuit, the computer host is started, and when the rule is not in accordance with the set, the signal processor drives the first triode to be conducted once, and the alarm horn sends an alarm.
The capacitor is a super capacitor with the capacity of 1F and the withstand voltage of 5.2V, when the decoding signal rule received by the signal processor is not in accordance with the setting for multiple times, the alarm horn gives an alarm for multiple times and exhausts the electric quantity of the super capacitor, and the start-up controller does not work any more.
The wireless coding circuit and the wireless coding circuit are mutually matched wireless coding and decoding circuits or rolling code coding and decoding circuits; the model of the first diode and the second triode is 8050; the type of the first diode and the type of the second diode are 1N 4001; the alarm horn is a siren alarm horn or a voice alarm horn recorded with alarm words.
The signal processor is a single chip circuit or a programmable controller circuit.
The left dial switch and the right dial switch are both single-pole ten-throw rotary switches.
The size and the shape of the socket are the same as those of a standard USB socket, and the password generator is manufactured into a U-shaped structure.
Compared with the prior art, the invention has the following advantages: the novel keyboard has the advantages that the design is reasonable, the structure is simple, the manufacture is easy, the functions of the keyboard are increased by arranging the calculator at one side of the novel keyboard, and the space occupied by an accounting additional counter is reduced; the invention sets two dial switches to form the password power supply of the starting controller and the password generator, and sets a plurality of key switches to form a multi-sequence and multi-frequency combined password control mechanism, adopts a pluggable password generator structure, and is matched with a super capacitor to be used as a temporary power supply of the starting controller and the password generator, and a computer host is not provided with a starting button, thereby greatly enhancing the starting encryption control of the computer special for accounting, effectively avoiding the possibility that illegal personnel start the computer special for accounting, and being beneficial to realizing the secret work.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic diagram of the external structure of the novel keyboard of the present invention;
fig. 3 is a circuit schematic of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a computer dedicated for accounting with a novel keyboard comprises a host computer 1, wherein the host computer 1 is connected with a display 2 and a mouse 3 through cables, the host computer 1 is connected with the novel keyboard 4 through infrared rays for data transmission, a shell of the host computer 1 is not provided with a start-up key, a start-up controller 5 is arranged in the shell of the host computer 1, an output end of the start-up controller 5 is connected with a start-up circuit, and a control end of the start-up controller 5 is connected with a connecting jack 11 arranged on the shell; a calculator 41 is arranged at one side of the novel keyboard 4, so that conventional accounting calculation is convenient to perform, a left leg 42 and a right leg 43 which can rotate are respectively arranged at two sides of the upper part of the novel keyboard 4, rotating shafts of the left leg 42 and the right leg 43 are respectively connected with a left dial switch 421 and a right dial switch 422 inside the keyboard 4, and the left leg 42 or the right leg 43 is pulled to drive the contact conversion of the left dial switch 421 or the right dial switch 422; the end face of the top of the novel keyboard 4 is provided with at least two key switches 44, in the embodiment, 9 key switches are arranged, the end face of one side part of the novel keyboard 4 is provided with a socket 45, the size and the shape of the socket 45 are the same as those of a standard USB socket, and the socket 45 is provided with a password generator 6 capable of being plugged; the key switch 44, the left dial switch 421, the right dial switch 422 and the jack 45 are connected with one end of the control circuit 7, and the other end of the control circuit 7 is provided with a connecting plug 71; the connecting plug 71 is connected with the connecting jack 11 in a plug-in manner; the password generator 6 is in signal connection with the starting controller 5 through radio; the left dial switch 421, the right dial switch 422, the key switch 44 and the password generator 6 cooperate to generate a wireless password signal, and the wireless password signal drives the power-on controller 5 to work to complete the power-on operation of the computer host 1.
The password generator 6 is a wireless coding circuit 61 arranged in a U-disk-shaped structure shell, the plugging end of the wireless coding circuit is the same as the structure of a U-disk plug, the power supply negative end of the wireless coding circuit 61 is connected with an outer metal frame of the U-disk plug structure, the signal control end of the wireless coding circuit 61 is respectively connected with a circuit in the U-disk plug structure, and the power supply positive end of the wireless coding circuit 61 is connected with the signal control end through an internal diode of the wireless coding circuit and does not need to be connected; the boot controller 5 comprises a wireless decoding circuit 51 and a signal processor 52, wherein the positive power supply terminal of the wireless decoding circuit 51 is connected with the positive power supply terminal of the signal processor 52, the positive terminal of a capacitor 53, one terminal of 9 key switches 44, one terminal of an alarm horn 54, one power supply terminal of a relay 55, the negative terminal of a first diode 56 and the negative terminal of a second diode 57, the positive terminal of the second diode 57 is the positive power supply terminal V + of the boot controller 5, the positive terminal of the first diode 56 is connected with the other power supply terminal of the relay 55 and the collector of a second triode 58, the base of the second triode 58 is connected with one output terminal of the signal processor 52, the other terminal of the alarm horn 54 is connected with the collector of a first triode 59, the base of the first triode 59 is connected with the other output terminal of the signal processor 52, the signal output terminal of the wireless decoding circuit 51 is connected with the signal input terminal of the signal processor 52, the negative power supply end of the wireless decoding circuit 51 is connected with the negative power supply end of the signal processor 52, the emitter of the first triode 59, the emitter of the second triode 58, one fixed contact of the left dial switch 421 and the negative power supply end of the wireless coding circuit 61, the movable contact of the left dial switch 421 is connected with the movable contact of the right dial switch 422, one fixed contact of the right dial switch 422 is connected with the negative electrode end of the capacitor 53 and serves as the negative power supply end GND of the power-on controller 5, the signal control end of the wireless coding circuit 61 is connected with the other ends of any 4 of the 9 key switches 44, the other ends of the 9 key switches 44 are connected with one error code input end of the signal processor 52, and when the error code input end obtains a high level, the signal processor 52 controls to give an alarm; two ends of the normally open contact 551 of the relay are used for connecting a starting circuit (not shown in the figure); the left dial switch 421 and the right dial switch 422 are matched for operating and controlling the power supply of the password generator 6 and the power-on controller 5, and the password can be changed by changing the positions of the static contacts of the left dial switch 421 and the right dial switch 422; when the sequence and the times of pressing each key switch 44 regularly, the wireless coding circuit 61 sends a coding signal, the coding signal of the law is received by the wireless decoding circuit 51 and is transmitted to the signal processor 52 for recognition, when the law is in accordance with the setting, the signal processor 52 drives the second triode 58 to be conducted once, the relay 55 acts, the contact 551 of the relay is connected with a starting circuit, the computer host is started, when the law is not in accordance with the setting, the signal processor 52 drives the first triode 59 to be conducted once, and the alarm horn 54 sends an alarm. The capacitor 53 is a super capacitor with the capacity of 1F and the withstand voltage of 5.2V, and when the decoding signal rule received by the signal processor 52 does not meet the setting for many times, the alarm horn 54 gives an alarm for many times and exhausts the electric quantity of the super capacitor, so that the start-up controller 5 does not work any more. The wireless coding circuit 61 and the wireless coding circuit 51 are four wireless coding and decoding circuits which are mutually matched or four rolling coding and decoding circuits; the model of the first diode 59 and the second triode 58 is 8050; the type of the first diode 56 and the second diode 57 is 1N 4001; the alarm horn 54 is a siren alarm horn or a voice alarm horn recorded with an alarm word. The signal processor 52 is a single chip circuit or a programmable controller circuit, and its operation program is the prior art and will not be described here. The left dial switch 421 and the right dial switch 422 are both single-pole-ten-throw rotary switches.
The working principle is as follows: when the staff leaves the computer at ordinary times, the password generator 6 is pulled out from the novel keyboard 4 and taken away. When a computer is needed to be used, the password generator 6 is inserted into the jack 45 of the novel keyboard 4, the left supporting leg 42 and the right supporting leg 43 are respectively shifted, so that the movable contacts of the left dial switch 421 and the right dial switch 422 are driven to rotate to the set fixed contacts, if the movable contact of the left dial switch 421 is connected to the third fixed contact, the movable contact of the right dial switch 422 is connected to the first fixed contact, at the moment, the left supporting leg 42 and the right supporting leg 43 form a 31 password (the set password can be changed by changing the movable contacts of the left dial switch 421 and the right dial switch 422 to rotate to the fixed contacts thereof), and after the password is shifted correctly, the electric quantity in the capacitor 53 can be used as a power supply for the start-up controller 5 and the password generator 6; at this time, the worker presses 1-4 of the 9 key switches 44 respectively, and according to the preset number of bits, sequence and number of pressing, the wireless coding circuit 61 can send the regular password, the wireless coding circuit 51 receives the regular password and transmits the regular password to the signal processor 52 for comparison with the preset rule, if the two are the same, the signal processor 52 drives the second triode 58 to conduct once (can be set to 1-3 seconds), the relay 55 acts, the contact 551 connects the startup circuit, and the computer host realizes startup; if the two laws are different, the signal processor 52 drives the first triode 59 to conduct once (can be set to 5-15 seconds), the alarm horn 54 gives an alarm once, when the decoding signal law received by the signal processor 52 does not accord with the setting for many times, the alarm horn 54 gives an alarm for many times and exhausts the electric quantity of the super capacitor 53, the start-up controller 5 loses the power supply and does not work any more, namely the computer is locked. The setting rule of the power-on password of the 9 key switches 44 is as follows: firstly, 1-4 of the 9 key switches 44 are used, and the preset values are the number of the 9 key switches 44, the pressing sequence and the pressing times of the 1-4 key switches 44, for example, the 3 rd key switch 44 is pressed 1 time and the 5 th key switch 44 is pressed 9 times from the left side of the upper part of the novel keyboard 4, the password of the 9 key switches 44 is that the starting work can be realized by pressing 1 time for the 3 rd key switch 44 and then pressing 9 times for the 5 th key switch 44, and any pressing exceeding the limited power is illegal. The time interval between the pressing of the key switches 44 is defined as 1-5 seconds, and after the time delay of 1-5 seconds after the last key switch 44 is pressed, the signal processor 52 operates again to press another key switch 44 again to input an illegal password. After the computer host 1 of the invention is started and enters normal operation, the password generator 6 can be directly pulled down for storage, and a 5V direct current power supply on the internal circuit main board of the computer host 1 charges the capacitor 53 through the second diode 57 for next use. The two ends of the capacitor 53 can be connected with an internal keyboard circuit of the novel keyboard 4 and supply power to the novel keyboard 4 (not shown in the figure), so that the novel keyboard 4 with infrared wireless transmission can be conveniently used without additionally arranging a battery.
The novel keyboard has the advantages that the design is reasonable, the structure is simple, the manufacture is easy, the functions of the keyboard are increased by arranging the calculator at one side part of the novel keyboard, and the space occupied by an accounting additional counter is reduced; the invention sets two dial switches to form the password power supply of the starting controller and the password generator, and sets a plurality of key switches to form a multi-sequence and multi-frequency combined password control mechanism, adopts a pluggable password generator structure, and is matched with a super capacitor to be used as a temporary power supply of the starting controller and the password generator, and a computer host is not provided with a starting button, thereby greatly enhancing the starting encryption control of the computer special for accounting, effectively avoiding the possibility that illegal personnel start the computer special for accounting, and being beneficial to realizing the secret work.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. Accounting special computer with novel keyboard, including computer, computer cable junction display and mouse, computer and novel keyboard carry out data transmission through the infrared ray and are connected its characterized in that: the shell of the computer host is not provided with a starting-up key, a starting-up controller is arranged in the shell of the computer host, the output end of the starting-up controller is connected with a starting-up circuit, and the control end of the starting-up controller is connected with a connecting jack arranged on the shell; a calculator is arranged at one side of the novel keyboard, a left leg and a right leg which can rotate are respectively arranged at two sides of the upper part of the novel keyboard, rotating shafts of the left leg and the right leg are respectively connected with a left drive plate switch and a right drive plate switch in the keyboard, and the contact conversion of the left drive plate switch or the right drive plate switch can be driven by pulling the left leg or the right leg; the end surface of the top of the novel keyboard is provided with at least two key switches, the end surface of one side part of the novel keyboard is provided with a socket, and the socket is provided with a password generator capable of being plugged; the key switch, the left drive plate switch, the right drive plate switch and the socket are connected with one end of a control circuit, and the other end of the control circuit is provided with a connecting plug; the connecting plug is connected with the connecting jack in a plug-in manner; the password generator is in signal connection with the starting controller through radio; the left dial switch, the right dial switch, the key switch and the password generator are operated in a matching way to send out a radio password signal, and the radio password signal drives the startup controller to work to complete the startup work of the computer host.
2. An accounting-dedicated computer with a new keyboard as claimed in claim 1 wherein: the password generator is a wireless coding circuit arranged in a shell; the start-up controller comprises a wireless decoding circuit and a signal processor, wherein the positive power end of the wireless decoding circuit is connected with the positive power end of the signal processor, the positive end of a capacitor, one end of a key switch, one end of an alarm horn, one power end of a relay, the negative end of a first diode and the negative end of a second diode, the positive end of the second diode is the positive power end of the start-up controller, the positive end of the first diode is connected with the other power end of the relay and the collector of a second triode, the base of the second triode is connected with the output end of the signal processor, the other end of the alarm horn is connected with the collector of the first triode, the base of the first triode is connected with the other output end of the signal processor, the signal output end of the wireless decoding circuit is connected with the signal input end of the signal processor, the negative power end of the wireless decoding circuit is connected with the negative power end of, The emitter of the first triode, the emitter of the second triode, a stationary contact of the left dial switch and the negative power end of the wireless coding circuit, the movable contact of the left dial switch is connected with the movable contact of the right dial switch, one stationary contact of the right dial switch is connected with the negative end of the capacitor and serves as the negative power end of the power-on controller, and the signal control end of the wireless coding circuit is connected with the other end of the key switch; two ends of the normally open contact of the relay are connected with a starting circuit; the left dial switch and the right dial switch are matched for password operation to control the power supply of the password generator and the starting controller, and the password can be changed by changing the positions of the static contacts of the left dial switch and the right dial switch; the wireless coding circuit sends a coding signal according to the rule by pressing the sequence and the times of each key switch, the coding signal of the rule is received by the wireless decoding circuit and is transmitted to the signal processor for identification, the signal processor drives the second triode to be conducted once when the rule is in accordance with the set, the relay acts to connect the starting circuit, the computer host is started, and when the rule is not in accordance with the set, the signal processor drives the first triode to be conducted once, and the alarm horn sends an alarm.
3. An accounting-dedicated computer with a new keyboard as claimed in claim 2 wherein: the capacitor is a super capacitor with the capacity of 1F and the withstand voltage of 5.2V, when the decoding signal rule received by the signal processor is not in accordance with the setting for multiple times, the alarm horn gives an alarm for multiple times and exhausts the electric quantity of the super capacitor, and the start-up controller does not work any more.
4. An accounting-dedicated computer with a new keyboard as claimed in claim 2 wherein: the wireless coding circuit and the wireless coding circuit are mutually matched wireless coding and decoding circuits or rolling code coding and decoding circuits; the model of the first diode and the second triode is 8050; the type of the first diode and the type of the second diode are 1N 4001; the alarm horn is a siren alarm horn or a voice alarm horn recorded with alarm words.
5. An accounting-dedicated computer with a new keyboard as claimed in claim 2 wherein: the signal processor is a single chip circuit or a programmable controller circuit.
6. An accounting-dedicated computer with a new keyboard as claimed in claim 1 wherein: the left dial switch and the right dial switch are both single-pole ten-throw rotary switches.
7. An accounting-dedicated computer with a new keyboard as claimed in claim 1 wherein: the size and the shape of the socket are the same as those of a standard USB socket, and the password generator is manufactured into a U-shaped structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110134174.7A CN112540945B (en) | 2021-02-01 | 2021-02-01 | Accounting special computer with novel keyboard |
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| CN202110134174.7A CN112540945B (en) | 2021-02-01 | 2021-02-01 | Accounting special computer with novel keyboard |
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| CN112540945A true CN112540945A (en) | 2021-03-23 |
| CN112540945B CN112540945B (en) | 2022-04-12 |
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| CN112540945B (en) | 2022-04-12 |
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