51 single chip microcomputernumberPassword lockProgram and simulation data

51 single chip microcomputernumberPassword lockProgram and simulation data
2021-12-30 08:44:42three

,

51 single chip microcomputer assemblyPassword lock(modifiable)password, course design, including thesis)! (Senior 3)

Single chip microcomputer course design topic:Password lockBackground of catalogue topic selectionPassword lockPurpose and significancePassword lockPrinciple system ofprogrammeAnd overall structure, overall experimental function, hardware design, experimental instrumentCircuitThe functions, functions and principles used in the schematic software design and program design flow chart
2021-11-21 11:21:04nineteen

,

Based on ATmega128Password lock

, the relay is on. (2) When three input errorspasswordAfter,Password lockProhibit input for 10 seconds and give corresponding prompt. (3) Enter the correctpasswordAfter, it can be modifiedpasswordAnd the number of times to query and clear the opening of the door. (4) Self made relayCircuitmodular. (5) RealizepasswordPower down without loss. Other reasonable functions that match the background of the topic can be added
2021-11-15 10:21:02twelve

,

Electronic control system based on single chip microcomputerPassword lockDesign

            electronic control based on single chip microcomputerPassword lock   Abstract: this system is composed of single chip microcomputer system, matrix keyboard, LED display and alarm system. The system can complete unlocking, timeout alarm, over locking and administrator
2021-11-04 13:06:00sixteen

,

Based on 51 single chip microcomputerPassword lock

This project is based on 51 single chip microcomputerPassword lock, which is suitable for curriculum design and mainly realizes:Password lockFunction, input through matrix keypassword, the input range is 0-F, with four digits in total; At the same time, you can also use the change key to changepassword, you need to enter the original when changingpasswordTo enter the change
2021-11-04 12:36:08seventeen

,

How to changePassword lockofpassword, introduction of specific steps

Hello, I’m LAN and Xiao Bian. You know the apartmentPassword lockAre you? Today, LAN he Xiaobian will make a special analysis for you, hoping to help you. With the continuous progress of security door technology, many security doors are equipped with apartmentsPassword lock。 Sometimes the apartment needs to be modified for safety reasonsPassword lock
2021-08-17 10:49:17eighteen thousand two hundred and eighty-six

,

Based on 51 single chip microcomputerPassword lockResource download

Based on 51 single chip microcomputerPassword lockResource download
2021-08-12 17:26:10sixteen

,

A new security system made of single chip microcomputerPassword lock

A new security system made of single chip microcomputerPassword lock(single chip microcomputer course design) – this document is a new type of safety document made by single chip microcomputerPassword lockThe introduction materials and explanations are quite good. Those who are interested can download and have a look
2021-07-22 16:24:38twenty-four

,

Simple electronicPassword lockSource code Summary Download

Simple electronicPassword lockSource code Summary Download
2021-06-29 10:32:26seven

,

Multifunctional eight bit electronicPassword lockdesign schemeCollection

ElectronicsPassword lockIt’s a way to passpasswordInput to controlCircuitOr the chip works (access control system), so as to control the closing of mechanical switch and complete the tasks of unlocking and locking. It has many kinds, including simple onesCircuitThere are also chip based products with high cost performance. Widely used electronicPassword lockIt is realized by programming with the chip as the core.
2021-03-25 16:12:47ten

,

Password lockSimulation ofCircuitPictures and programs are free to download

The main content of this document describes in detailPassword lockSimulation ofCircuitPictures and programs are free to download.
2020-12-14 13:22:29sixteen

,

Fingerprint based on stm32Password lockofCircuitprogrammeDesign

STM32 smart fingerprintPassword lockcanpasswordFingerprint WiFi remote unlocking, canpasswordUnlock, fingerprint unlock, fingerprint can be entered and deleted, up to 300 fingerprints can be saved, WiFi can be connected, remote code scanning can be unlocked, non mobile LAN local connection, remote web page detectionPassword lockSurrounding environment status, illegal unlocking detection, an Internet of things product.
2020-09-22 17:55:41nine thousand two hundred and fifty-nine

,

Realization of new electronic based on FPGA chip and ISD2560Password lockDesign of

With the development of electronic technology, it has the functions of anti-theft alarm, voice prompt and so onPassword lockreplacepasswordMechanical type with less quantity and poor safetyPassword lockIt is an inevitable trend. At present, mostPassword lockIt is designed by single chip microcomputer,CircuitComplex and inflexible. This paper adopts advanced EDA
2018-09-01 20:10:10eight hundred and ninety-seven

,

fingerprintPassword lockAdvantages and disadvantages of

FingerprintsPassword lockWhat are the advantages? fingerprintPassword lockWhat are the advantages? fingerprintPassword lockWhat are the disadvantages? fingerprintPassword lockIt is a very mainstream intelligence at presentlockConfiguration, fingerprint unlocking+passwordUnlocking combination, equipped with emergency mechanical key, is a very common type of intelligent lock at present. Fingerprint identification as a mature technology
2020-06-10 14:26:45thirty-six thousand eight hundred and eighty-four

,

Design an economical and safe electronicPassword lockCircuitAnd source code

One that prevents multiple attemptspasswordBased on MCUPassword lockdesign scheme, according to the 10 general requirements of users, the single chip microcomputer is givenPassword lockHardwareCircuitAt the same time, the selection of MCU model, hardware design, software flow chart and the allocation of MCU storage unit are given
2020-01-03 18:23:38one thousand four hundred and sixty-two

,

Electronic based on RFID TechnologyPassword lockHow is it designed and implemented

The system uses high-performance control chip STC89C58RD + and mature RFID technology to analyze the electronic characteristics of contactless IC cardPassword lockA contactless IC card electronic card based on RFID technology is proposedPassword lockSystematic solutionprogramme
2020-01-06 17:20:38one thousand three hundred and one

,

Design based on STM32 single chip microcomputernumberPassword lockFree download of engineering documents

The main content of this document introduces in detail the design based on STM32 single chip microcomputernumberPassword lockProject files are downloaded free of charge.
2019-07-08 09:28:27sixty

,

Intelligent design using single chip microcomputerPassword lockProgram free download

ShouldPassword lockController, 0-9 on keyboardnumberKey, function key: confirm and cancel, etc. you can set composite keys.passwordNumber of digits andpasswordCan be set arbitrarily, when inputnumberAnd setpasswordAt the same time,lockOpen, otherwise it cannot be opened. IIC communication mode is adopted,Password lockofpasswordPower down without loss.
2019-04-23 17:42:27nine

,

How to make electronic with single chip microcomputerPassword lockCircuit

ElectronicsPassword lockPress enterpasswordThere are many kinds of methods, among which the most commonly used one is usingnumberkeyboard entrypasswordElectronicPassword lock。 This lecture mainly introduces the electronic device composed of ATmega8 and LCD1602 LCDPassword lock, this electronPassword lockCan be controlled by users
2018-09-20 19:46:42six thousand one hundred and twenty

,

A safePassword lockDesignCircuit

One that prevents multiple attemptspasswordBased on MCUPassword lockdesign scheme, according to the 10 general requirements of users, the single chip microcomputer is givenPassword lockHardwareCircuitAt the same time, it gives the selection of MCU model, hardware design, software flow chart, allocation of MCU storage unit, assembly language source program and detailed notes.
2018-09-20 19:47:01two thousand six hundred and forty-eight

,

Based on MCUPassword lockdesign scheme

One that prevents multiple attemptspasswordBased on MCUPassword lockdesign scheme, according to the 10 general requirements of users, the single chip microcomputer is givenPassword lockHardwareCircuitAt the same time, the selection of MCU model, hardware design, software flow chart and the allocation of MCU storage unit are given
2018-09-20 19:43:55twelve thousand nine hundred and forty

,

Simple electronicPassword lockCircuitcurriculum design

This paper mainly introduces the triodePassword lockCircuitPrinciple and video assembly demonstration. In addition, three models are introducedPassword lockCircuitSchematic diagram.
2018-07-20 15:39:49twenty-three thousand five hundred and fifty-seven

,

VHDL ElectronicsPassword lockDesign

More quickly and flexibly design products that meet various requirementsPassword lock, better than other design methods. VHDL is a hardware description language conforming to IEEE standard. Its biggest feature is to learn from the functional characteristics of high-level programming languageCircuitThe behavior and structure of are described in a highly abstract and standardized form, and the design of different levels and fields
2018-06-27 15:14:18ten

,

Password lockHow to make the controller use IIC communication modePassword lockofpasswordProcedure of power failure without loss

ShouldPassword lockController, 0-9 on keyboardnumberKey, function key: confirm and cancel, etc. you can set composite keys.passwordNumber of digits andpasswordCan be set arbitrarily, when inputnumberAnd setpasswordAt the same time,lockOpen, otherwise it cannot be opened. IIC communication mode is adopted,Password lockofpasswordPower down without loss.
2018-06-06 09:31:50five

,

Remote control electronicsPassword lockofdesign schemeSummary (four electronicPassword lockDesign schematic diagram (detailed explanation)

This paper mainly introduces the remote control electronicsPassword lockofdesign schemeSummary (four electronicPassword lockDesign schematic diagram (detailed explanation). Yyh26 and yyh28 can be paired to form more than 4 million different groupspasswordTherefore, it is extremely difficult to decipher and very safe.Circuit1 ~ 8 and 10 ~ 13 feet of yyh26 are
2018-03-10 10:04:02thirty thousand three hundred and twenty-four

,

EDA simplePassword lockofdesign schemeSummary (three EDA simplePassword lockDesign schematic diagram of (detailed explanation)

This paper mainly introduces the simple method of EDAPassword lockofdesign schemeSummary (three EDA simplePassword lockThe design schematic diagram of the is explained in detail). Using EDA tools, electronic designers can design electronic systems from concepts, algorithms and protocols. A lot of work can be completed by computers, and electronic products can be integrated
2018-03-10 09:44:58eleven thousand and eighty-seven

,

Electronic based on 8086Password lockDesign and simulation

ElectronicsPassword lockIt’s a way to passpasswordInput to controlCircuitOr the chip works to control the closing of the mechanical switch and complete the tasks of unlocking and locking. It has many kinds, including simple onesCircuitThere are also chip based products with high cost performance. Widely used electronicPassword lockIt is realized by programming with the chip as the core.
2018-01-31 15:14:57seven thousand five hundred and fifty

,

AT89C52 electronicPassword lockDesign

AT89C52 electronicPassword lockDesign
2017-12-08 17:11:31twelve

,

Password lockSchematic diagram of

Password lockschematic diagram
2017-11-16 18:55:26eleven

,

microcomputerPassword lockDesign

IntroducePassword lockThis time we want to design a microcomputerPassword lock, compared with traditional mechanicalPassword lockDifferent.
2017-09-20 12:35:15nine

,

Single chip microcomputer ElectronicsPassword lockDesign

Electronic with complete programPassword lockDesign paper
2017-05-03 12:10:46one hundred and sixty-eight

,

infra-redPassword lockDesign_ Su Jiancai

infra-redPassword lockDesign_ Su Jiancai
2017-03-07 21:48:38one

,

ElectronicsPassword lock1602 LCD data

ElectronicsPassword lock1602 LCD data
2017-03-14 23:44:41eighteen

,

Electronic control system based on single chip microcomputerPassword lockDesign and Implementation

Electronic control system based on single chip microcomputerPassword lockDesign and Implementation
2017-01-20 21:18:16twenty

,

Password lockSimulation 51Password lockProtues simulationPassword lockProgram simulation diagram Pro

Password lockSimulation 51Password lockProtues simulationPassword lockProgram simulation diagram Protues simulation
2017-01-14 20:36:31one hundred and thirty-eight

,

ElectronicsPassword lockschematic diagram

singlechipPassword lock
2016-12-21 22:20:24seven

,

numberElectronicsPassword lock

This document describes the simple electronicPassword lockDesign method of
2016-12-02 21:48:57thirty-eight

,

LabVIEW Forum – fourPassword lock

Password lock
2016-12-16 11:30:11one hundred and fifteen

,

Single chip microcomputerPassword lock

STC80C51 — of single chip microcomputerPassword lockSource program.
2016-08-31 22:38:47twenty-eight

,

keylockPassword locksource code

keylockPassword lockSource code, you need to come down and have a look
2016-08-08 23:01:13twenty-one

,

ElectronicsPassword lockC language program

This is an electronPassword lockC language program, and electronicPassword lockSimulation diagram of.
2016-07-27 11:40:37seventy-three

,

ElectronicsPassword lockDrawing based on Multisim Simulation Software

ElectronicsPassword lockDrawing based on Multisim Simulation Software
2016-07-26 10:56:18thirty-five

,

Password lockcurriculum design

, timeout alarm, over lock, administrator decryption, user modificationpasswordBasicPassword lockThe function of. In addition to the above basicPassword lockIn addition to the function, it also has the functions of power regulation storage, audible and visual prompt, and the remote control function can be added according to the actual situation. The system has low cost and practical function.
2016-07-02 10:19:24four

,

Matrix keyboardPassword lock

Matrix keyboardPassword lockC51 MCU source code, Keil source file, written in C language
2016-06-17 11:09:43thirty-four

,

Simple electronicPassword lock

Simple electronicPassword lockFour position electronPassword lockBrief description of design ideas
2016-06-13 10:19:32thirty-four

,

Password locksource code

Password lockSource code, friends in need can come down and have a look.
2016-05-24 23:49:05thirty-five

,

##Single chip microcomputer ElectronicsPassword lock+New

Password lock, 6 ispassword, alarmCircuit, wrong input alarm for 3 times, single chip microcomputer STC89C52
2016-05-16 17:13:58fifty-one

,

MCU infraredPassword lock

Password lockIt is mainly composed of matrix keyboard, single chip microcomputer, external hardware and so on. The matrix keyboard is used for inputnumberpasswordAnd the realization of various functions. In actual use, as long as the load of single chip microcomputer is changed from relay to electronicPassword lockOf course, the normally open of the relay can also be used
2016-05-11 13:47:32three

,

multi-functionPassword lockschematic diagram

multi-functionPassword lockSchematic diagrams are worthy of reference.
2016-04-30 23:08:03thirteen

,

EightnumberPassword lockdata

EightnumberPassword lockInformation, good design information, come and learn.
2016-04-24 10:49:11thirty-five

,

Serial communication electronicsPassword lockdata

Serial communication electronicsPassword lockInformation, good design information, come and learn.
2016-04-24 11:17:11thirty-three

,

ElectronicsPassword lockprogram

ElectronicsPassword lockYou can refer to the program to save the trouble of writing the program
2016-03-05 16:12:24six

,

ElectronicsPassword lock

Easy to use electronicsPassword lock, we have already made the material object!! Can be used as MCU graduation design, curriculum design.
2016-03-08 22:39:20eighty-eight

,

Password lockpcbCircuitAnd procedure

Password lock_ AT89S52_ 2401 schematic diagram_ Simulation filePassword lockThe real object is manual hole plate welding, and all functions can be simulated by simulation software, which uses Proteus version 7.5 or above
2016-02-07 14:59:20eleven

,

Electronic with single chip microcomputerPassword lockcontrolCircuit

Electronic with single chip microcomputerPassword lockcontrolCircuit, if necessary, come down and have a look.
2016-01-26 22:02:09eighteen

,

MCS based on MCU_ 51 intelligentPassword lockDesign

MCS based on MCU_ 51 intelligentPassword lockDesign.
2016-01-26 22:05:30nineteen

,

singlechipPassword lock

singlechipPassword lockPCB and schematic diagram, you can see if you are interested.
2016-01-19 17:11:21thirteen

,

ElectronicsPassword lockpaper

Electronic based on 51 single chip microcomputerPassword lock1602 and AT24C02 are used in combination
2015-12-17 21:28:55thirty-six

,

Password lockprogram source code

51 single chip microcomputer,Password lock。 RealizablePassword lockThe basic functions of, unlock, alarm, modifypasswordetc.
2015-11-10 13:46:16forty-one

,

ElectronicsPassword lockdata

Using 51 single chip microcomputer to realize electronicPassword lockIt is the best choice for simple 51 single chip microcomputer to practice.
2015-11-02 22:35:08eleven

,

Electronic based on FPGAPassword lockDesign of

Electronic based on FPGAPassword lockTechnical paper of design
2015-10-29 17:01:35twelve

,

FPGA BasednumberPassword lock

This paper introduces a FPGA BasednumberPassword lock。 Top downnumberThe system design method willnumberPassword lockThe system is divided into several subsystems and further divided into several modules. Then these modules are designed with hardware description language VHDL, and the hardware is tested at the same time.
2015-08-04 16:59:49seven thousand seven hundred and fifty-one

,

infrared remote controlPassword lockElectronicsCircuitDesign details –CircuitPicture daily reading (169)

infrared remote controlPassword lockElectronicsCircuit, not only has ordinaryPassword lockIntelligent control, locking, alarm and other characteristics, and 8 bits can be realized without expanding E2PROMpasswordArbitrarily modified functions,
2015-05-25 11:52:58five thousand eight hundred and eighty-five

,

ElectronicsPassword lock555 monostableCircuitDesign Attack

ElectronicsPassword lockUsing voltage comparator, 555 monostableCircuit, counter, JK Trigger, UPS power supply, etcnumberlogicCircuit, realize the electronic control of the door, and have various additional functionsCircuitensureCircuitAble to work safely, with a very high safety factor.
2015-03-11 10:31:44seven thousand three hundred and seventy

,

Infrared remote control based on AT89C51Password lockSystematicdesign scheme

This paper introduces an infrared remote control based on AT89C51Password lockSystematicdesign scheme。 bookprogrammeInfrared remote control inPassword lockIt is composed of infrared receiving head HS0038 (infrared receiving frequency is 38kHz) and receiving part controlled by AT89C51; Infrared LED and
2014-03-19 11:29:21two thousand five hundred and fifty-two

,

Multi userPassword lockDesign of

Users do not need to replacepasswordIt can prevent the previous user from entering again and improve the security of another user’s residence. Its use can reduce the replacement costlockBring trouble, save cost and improve safety. Based on multi-userPassword lockdesign scheme, the AT89C51 single chip is introduced
2012-02-13 16:18:11one hundred and fifteen

,

Simple with alarm functionPassword lock

This novel simple with alarm functionPassword lockCircuitConcise and clear, with perfect functions, it not only has strong confidentiality, but also has alarm function. Just follow the set electronicpasswordTurn on the three switches Ko, K8 and K6 in turn to turn on thelockOpen.
2012-02-09 11:09:00five thousand five hundred and four

,

Speech based on FPGAPassword lockResearch and design of system

ElectronicsPassword lockThe system is mainly composed of electroniclockThe utility model is composed of a body, an electronic key and other parts. Multiple groups of unlocking can be stored in an electronic keypassword, the user can modify the unlock at any time during usepassword, update or configure the key to unlockpassword。 A handful of electronslockMultiple keys can be prepared. The wide application of voice makes it possible to play voice electronicallyPassword lockIt is more convenient to use.
2011-01-18 21:02:49one thousand one hundred and sixty-two

,

Simple electronicPassword lockCircuitchart

Ben electronicPassword lockThere are no 10 button switches, if you knowpassword, just press three buttons in sequence or at the same time to turn on the electroniclockIf you don’t know
2010-11-25 14:15:08eight thousand five hundred and thirty-five

,

ElectronicsPassword lockDesign of

ElectronicsPassword lockDesign an electronicPassword lock, inlockInput in on statepasswordpasswordThere are 4 bits in total, represented by data switch K1  K10number1、2、…、9、0,
2010-04-29 16:23:37four thousand six hundred and forty-one

,

ElectronicsPassword lockEDA technology ofdesign scheme

ElectronicsPassword lockEDA technology ofdesign schemeElectronic design based on EDA TechnologyPassword lock, which is cheap and safe
2010-04-29 10:52:10two thousand four hundred and sixty-six

,

digital circuit Virtualization of experimentdesign scheme

digital circuit Virtualization of experimentdesign schemeThis paper introduces the simple use method of virtual instrument and its application indigital circuit The application of virtual instrument in experimental teaching is given, and the conclusion is obtained through the comparison between virtual instrument and traditional instrument
2010-03-30 16:15:28twenty

,

Belt fromlockFunctionalPassword lockdesign principle

Belt fromlockFunctionalPassword lockDesign principle:CircuitSee figure. Thyristor SCR5, scr6 and scr7 are thePassword lockMain control element of. When three digits are pressed in the correct orderpasswordKey (this example)
2009-12-24 09:59:40two thousand five hundred and seventy

,

Electronic device using gal devicePassword lockCircuitchart

Electronic device using gal devicePassword lockCircuitFigure electronic device with general erasable gal devicePassword lockpasswordOnce the data is written, it can be saved for at least 20 years, andpasswordAt will
2009-11-17 22:41:13eight hundred and fifty-two

,

Frequency electronicPassword lockCircuit(LM567)

Frequency electronicPassword lockCircuit(LM567)CircuitIt consists of LM567.
2009-11-17 12:14:56two thousand one hundred and fifty-six

,

Nine button typePassword lockCircuit

Nine button typePassword lockCircuitbookCircuitOnly five arepasswordThe other four keys are pseudo. And fivepasswordThe key needs to be pressed nine times according to the specific program before unlocking.
2009-11-17 11:39:20one thousand nine hundred and two

,

Infrared remote control anti-theftPassword lockCircuit

Infrared remote control anti-theftPassword lockCircuitYyh26 and yyh28 can be paired to form more than 4 million different groupspasswordTherefore, it is extremely difficult to decipher and very safe.
2009-11-17 11:30:47seven hundred and fifteen

,

Highly reliable electronicsPassword lockCircuitchart

Highly reliable electronicsPassword lockCircuitFigure high reliability ElectronicsPassword lockCircuit: yyh308 electronicPassword lock8 groups can be set at the same timepassword, there are hundreds of millions of species in each grouppassword。 It has separate unlocking function and set
2009-11-17 11:19:12one thousand five hundred and nineteen

,

NovelPassword lockCircuit

NovelPassword lockCircuit: BenCircuitIt is controlled by ten digital keysCircuit, driveCircuitform.
2009-11-17 11:07:16six hundred and fourteen

,

FournumberPassword lockDesign

This experiment is based on four bits of easyfpga030numberPassword lockDesign. In this example, the crystal oscillator frequency of Actel FPGA a3p030 development board is used for four bitpasswordInput signal acquisition. according topasswordThe input signal controls the output of I / 0 port, and the first key controls itnumber
2009-11-02 17:00:17two hundred and nineteen

,

numberPassword lockDesign (Electronic)Password lock(making papers)

numberPassword lockDesign: Electronic Design of this paperPassword lockutilizenumberlogicCircuit, realize the electronic control of the door, and have various additional functionsCircuitensureCircuitAble to work safely, with a very high safety factor. Keywords electronPassword lockVoltage comparator 555 single
2009-08-05 23:34:23seven hundred and twenty-three

,

Single chip microcomputer controlledPassword lockDesign (includingCircuitFigure and source program)

Single chip microcomputer controlledPassword lockDesign (includingCircuitFigure and source program) controlled by single chip microcomputerPassword lockDesign. P1 pin of AT89S52 single chip microcomputer is externally connected with independent keys s1-s8, which representnumberKey 0-5, OK key, take
2009-05-31 15:16:30seventeen thousand one hundred and ninety-eight

,

Made with yyh308Password lockCircuitchart

Made with yyh308Password lockCircuitchart
2009-05-19 11:15:38sixteen

,

infrared remote controlPassword lockCircuitchart

infrared remote controlPassword lockCircuitchart
2009-05-19 11:12:31one hundred and thirty-one

,

ElectronicsPassword lockOpening and closing deviceCircuitchart

ElectronicsPassword lockOpening and closing deviceCircuitchart
2009-05-19 11:10:24fifteen

,

Double touchnumberPassword lockCircuitchart

Double touchnumberPassword lockCircuitchart
2009-05-19 11:08:38three

,

Touch typenumberPassword lockCircuitchart

Touch typenumberPassword lockCircuitchart
2009-05-19 11:04:42five

,

Simple telephonePassword lockCircuitchart

Simple telephonePassword lockCircuitchart
2009-05-19 11:02:49three

,

Simple electronicPassword lockCircuitchart

Simple electronicPassword lockCircuitchart
2009-04-22 11:51:04one thousand six hundred and sixty

,

Novel infrared remote controlPassword lockCircuitAnd production

Novel infrared remote controlPassword lockCircuitAnd production
2009-04-14 09:07:02eighty-one

,

Telephone anti-theftPassword lock

Telephone anti-theftPassword lock
2009-03-04 20:31:52six hundred and five

,

TelephonenumberPassword lock

TelephonenumberPassword lock
2009-03-03 21:16:33seven hundred and seventy-three

,

Sony Ericsson mobile phonePassword lock

Sony Ericsson mobile phonePassword lock
2009-02-25 09:54:20two thousand six hundred and sixty-eight

,

Infrared remote control based on single chip microcomputerPassword lockDesign and implementation of

Infrared remote control based on single chip microcomputerPassword lockDesign and Realization of the code LockControlled by infrared based on single chipPassword lock, and briefly introduces
2008-11-26 13:30:56one hundred and fifty-five

,

555 ElectronicsPassword lockCircuit

555 ElectronicsPassword lockCircuit: this electronPassword lockyespasswordArranged in the key and lock hole, only twopasswordThe lock can only be unlocked if it is consistent.
2008-05-20 21:46:19one thousand two hundred and ninety-seven

,

TennumberPassword lockCircuitchart

TennumberPassword lockCircuitchart
2008-05-15 22:39:26one thousand seven hundred and eighty-nine

,

Four position electronPassword lockCircuitchart

Four position electronPassword lockCircuitchart
2008-05-15 22:17:03ten thousand seven hundred and fifty-one

,

ElectronicsPassword lockCircuitchart

ElectronicsPassword lockCircuitFigure automotive electronicsPassword lockofCircuit
2008-04-25 12:38:28six thousand four hundred and thirty-two

,

Belt fromlockSimplicity of functionPassword lockCircuit

bookPassword lockThe feature is that if you press the wrong buttonpasswordNon sequential or pressed any keypasswordKey,CircuitThat is, the lock is off, and all keys fail, which greatly increases the difficulty of unlocking.     CircuitSee figure.
2006-04-16 23:19:58one thousand seven hundred and seventy

,

It can prevent multiple attemptspasswordSingle chip microcomputerPassword lock

Abstract: a method to prevent multiple probing is proposedpasswordBased on MCUPassword lockdesign scheme, according to the 10 general requirements of users, the single chip microcomputer is givenPassword lockHardwareCircuitAnd software program, and the model of single chip microcomputer is given at the same time
2006-03-11 11:48:46eight hundred and thirty-nine

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