CN202306565U - Computer password startup device - Google Patents
Computer password startup device Download PDFInfo
- Publication number
- CN202306565U CN202306565U CN2011204266400U CN201120426640U CN202306565U CN 202306565 U CN202306565 U CN 202306565U CN 2011204266400 U CN2011204266400 U CN 2011204266400U CN 201120426640 U CN201120426640 U CN 201120426640U CN 202306565 U CN202306565 U CN 202306565U
- Authority
- CN
- China
- Prior art keywords
- processing unit
- central processing
- computer
- relay
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Programmable Controllers (AREA)
Abstract
The utility model discloses a computer password startup device which comprises a password keyboard, a CPU (central processing unit), a relay and an alarm circuit, wherein the password keyboard is connected with an input end of the CPU; an output end of the CPU is connected with the alarm circuit; the other end of the CPU is connected with the relay; and a contact of the relay is connected with a computer startup circuit. Compared with the prior art, the computer password startup device disclosed by the utility model has the advantages of simple structure and strong confidentiality, and is convenient to use.
Description
Technical field
The utility model relates to the Computer Control Technology field, is specifically related to a kind of computer cryptography opening device.
Background technology
Computing machine in office and the archive office of unit is being stored a large amount of inner master files data, and these data allow to reveal anything but.At present, in order to prevent at will to be opened computing machine by the outsider, mostly managerial personnel are that computing machine adds startup password, prevents that with this other people from opening.But in the epoch of electronics technology develop rapidly, decoding the computer booting password no longer is a bigger difficult problem, so only depend on to computing machine adds startup password, can not prevent effectively that other people from opening computing machine, and confidentiality is poor.In case the computing machine in office and the archive office of unit is opened and is not in time found by other people, will cause a large amount of private files to be revealed, and causes heavy losses for government offices or unit.
The utility model content
The purpose of the utility model is exactly the defective that exists to prior art, and a kind of computer cryptography opening device is provided.
Its technical scheme is: comprise code keypad, central processing unit, relay and warning circuit; Said code keypad is connected with the input end of central processing unit; One output terminal of central processing unit is connected with warning circuit; Another output terminal of central processing unit is connected with relay, and the contact of relay is connected with the computer booting circuit.
Wherein, said central processing unit is single chip circuit or Programmable Logic Controller.
The utility model has advantage simple in structure, easy to use, strong security compared with prior art.
Description of drawings
Fig. 1 is the circuit structure block scheme of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1; A kind of computer cryptography opening device; Comprise code keypad 1, central processing unit 2, relay 4 and warning circuit 3, said code keypad 1 is connected with the input end of central processing unit 2, and an output terminal of central processing unit 2 is connected with warning circuit 3; Another output terminal of central processing unit 2 is connected with relay 4, and the contact of relay 4 is connected with computer booting circuit 5.Wherein, said central processing unit 2 is single chip circuit or Programmable Logic Controller.
The code keypad 1 of this device is installed in protected archive office computer housing outside; Other are installed in interior; Former computer booting button is removed, and the computer booting circuit 5 that its former button connected is connected on the contact of this device repeat circuit 4 and gets final product.
Claims (2)
1. computer cryptography opening device; It is characterized in that: comprise code keypad, central processing unit, relay and warning circuit; Said code keypad is connected with the input end of central processing unit; One output terminal of central processing unit is connected with warning circuit, and another output terminal of central processing unit is connected with relay, and the contact of relay is connected with the computer booting circuit.
2. computer cryptography opening device according to claim 1 is characterized in that: said central processing unit is single chip circuit or Programmable Logic Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204266400U CN202306565U (en) | 2011-10-27 | 2011-10-27 | Computer password startup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204266400U CN202306565U (en) | 2011-10-27 | 2011-10-27 | Computer password startup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202306565U true CN202306565U (en) | 2012-07-04 |
Family
ID=46375418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204266400U Expired - Fee Related CN202306565U (en) | 2011-10-27 | 2011-10-27 | Computer password startup device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202306565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113221082A (en) * | 2021-05-26 | 2021-08-06 | 东营安顺电气有限公司 | Data encryption method, system and computer |
-
2011
- 2011-10-27 CN CN2011204266400U patent/CN202306565U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113221082A (en) * | 2021-05-26 | 2021-08-06 | 东营安顺电气有限公司 | Data encryption method, system and computer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11263355B2 (en) | Tamper resistant module for industrial control system | |
| CN204557613U (en) | A kind of intelligent wireless cloud Fingerprint Lock | |
| CN202306565U (en) | Computer password startup device | |
| US10460887B2 (en) | System and method for providing functional safety monitoring of relay contacts | |
| CN102938046B (en) | A kind of chip-stored body and code protection method storing dynamic decipher operation based on static encryption | |
| WO2013121275A1 (en) | Portable device for data encryption/decryption and/or compression/decompression | |
| CN104157030A (en) | Method for controlling door lock through electronic network communication equipment | |
| CN202443377U (en) | Computer with fingerprint switch | |
| CN102117391A (en) | Touch lock circuit architecture operated by using gesture or graph and operating method thereof | |
| CN201662810U (en) | Improved cipher machine with safe operation | |
| CN111143841A (en) | Platform for studying and judging malicious programs of terminal | |
| CN205788188U (en) | Intelligent algorithm encryption device for protecting computer software | |
| CN204326746U (en) | Intelligent electric lock core | |
| CN105023323A (en) | Burglarproof electronic coded lock | |
| CN105589512A (en) | Hard disk switching storage device of multi-hard disk computer | |
| CN104408567A (en) | Hand-held power operation terminal with relatively high security | |
| CN202150119U (en) | Encryption device for controlling startup of big screen | |
| CN202887107U (en) | Confidentiality keyboard for computer | |
| CN204833087U (en) | Embedded industrial control computer | |
| CN105787332A (en) | System for intercommunication of mobile phone and computer | |
| CN204759424U (en) | System that uses with is prevented diverting by electric power system computer | |
| CN101418655A (en) | Cipher alarm | |
| CN202400870U (en) | Locking device for sewage treating machine | |
| CN204390236U (en) | A kind of data confidentiality stores converter | |
| CN205594743U (en) | Embedded trick lock based on microcontroller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20121027 |