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Description: 键盘为2行8列,PC0和PC1作为键盘的行线，PA0~PA7作为键盘的列线
显示部分用4个7段LED数码管，PB口和PD口通过4个74LS47对数码管进行控制
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Size: 1294 |
Author: 军军 |
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Description: 键盘为2行8列,PC0和PC1作为键盘的行线，PA0~PA7作为键盘的列线
显示部分用4个7段LED数码管，PB口和PD口通过4个74LS47对数码管进行控制-2 row keyboard 8, PC0 and PC1 as a keyboard line, PA0 ~ PA7 keyboard out as shown in part 4 paragraph 7 with LED digital tube, PB and PD mouth through the mouth 4 of the 74LS47 to control digital tube
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Size: 1024 |
Author: 军军 |
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Description: 用18B20（数字温度采集）74LS47(数码管译码)74LS138(三八译码) DS18B20是DALLAS公司生产的一线式数字温度传感器，具有3引脚TO－92小体积封装形式；温度测量范围为－55℃～＋125℃,可编程为9位～12位A/D转换精度，测温分辨率可达0.0625℃，被测温度用符号扩展的16位数字量方式串行输出.-With 18B20 (Digital Temperature Acquisition) 74LS47 (decoding digital tube) 74LS138 (decoder 38) DS18B20 is produced by first-line DALLAS digital temperature sensor with a 3-pin TO-92 package of small size temperature measurement range of-55 ℃ ~+125 ℃, Programmable for 9 ~ 12-bit A/D conversion accuracy, temperature measurement resolution of up to 0.0625 ℃, the temperature measured using symbols to expand the 16-digit serial output methods.
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Size: 6144 |
Author: Jn |
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Description: 74LS47 BCD-7段数码驱动芯片技术资料-74LS47 BCD-7 segment digital chip technology-driven information
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Size: 54272 |
Author: 下载 |
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Description: 自己写的单片机程序，基于C51，可检测74ls00,74ls47,74ls390,74ls151,74ls194芯片，程序较为简单，给大家分享。-Microcontroller to write their own procedures, based on the C51, can detect 74ls00, 74ls47, 74ls390, 74ls151, 74ls194 chips, a relatively simple procedure, to share with you all.
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Size: 66560 |
Author: 辰宸晨 |
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Description: 工作原理： 上电复位后进入启动工作状态，程序自动将LED数码管上电显示并且清零，等待接收指令状态，当在键盘上输入六位数字的数码时，单片机通过键盘输入口（即定为P1口），将键盘的数据读入处理后，将其对应值通过74LS47传送数据到LED数码管显示，并经74LS138译码控制器译码后以扫描的方式依次逐个连续点亮六个数码管；在此同时单片机还要判断所收到的键盘码是开锁码？如是，则将Ｐ２.0置低电平，此时绿色指示灯亮（或喇叭响），表示给出一个开锁动作的信号，此时程序自动进入时钟显示状态，时钟初始显示为“12:00:00”可直接作为时钟显示，并可通过键“A”/“B”/“C”分别来调整时钟值；如不是则再判断是否是要更改密码？如是则将键盘的对应值储存于EEPROM(24C01)中，以备下次开机后使用，EEPROM24C01是掉电存储密码的设备，也就是说当密码设定后，它就存储在芯片中了，单片机掉电后密码不会消失；如判断读入的数值均非单片机预设的指令码，则本单片机系统不预执行它。-drivers of 89c51 single chip machine,reset
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Size: 32768 |
Author: renye |
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Description: 以89S52为内核具有年、月、日、星期、时、分、秒等功能；时间与阴、阳历能够自动关联；具有温度计功能； 具备年、月、日、星期、时、分、秒校准功能
主要芯片89S52/DS1302/DS18B20/74LS47/74LS138-With 89S52 for the core with year, month, day, week, hours, minutes, seconds, and other functions time and overcast, the solar calendar can automatically associate with a thermometer function with year, month, day, week, hours, minutes and seconds calibration function the main chip 89S52/DS1302/DS18B20/74LS47/74LS138
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Size: 6144 |
Author: 陈啸天 |
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Description: 本程序是一ATMG16单片机的PB口控制 高四位控制74LS47译码器（段码） 低四位控制74LS138（位码）-This program is a ATMG16 SCM PB port to control high four control 74LS47 decoder (section code) low four control 74LS138 (bit code)
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Size: 11264 |
Author: 王奎 |
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Description: 详细描述了74ls47的功能，并详细介绍了各个引脚，以及如何使用-Described in detail 74ls47 features and details of each pin, and the use of
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Size: 54272 |
Author: 周王 |
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Description: 数码管显示实验，大家可以熟悉使用74ls47,-Digital control experiment, we can know use 74ls47,
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Size: 1024 |
Author: 谢亚伟 |
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Description: 51单片机，4位数码管，74LS47译码，74LS138位选译码，带ISIS仿真-51, 4-bit digital tube, 74LS47 decoder, 74LS138 Choice decoding with ISIS simulation
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Size: 62464 |
Author: 王奎 |
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Description: proteus 数字电路 仿真实验网上绝对没有！
通过数字逻辑实现74ls74也就是数码管bcd转显示码 虽然复杂却是对学习数字电路的朋友来说，有趣味性和启发性，同时希望尊重作者的辛勤和汗水！禁止将此重复上传到网上！-proteus online digital circuit simulation is absolutely no! 74ls74 through digital logic implementation is the digital control bcd switch display code though complex digital circuits is a friend of learning, there are interesting and enlightening, and wanted to respect the author' s hard work and sweat! Against this repeat uploaded to the web!
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Size: 33792 |
Author: fr |
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Description: 74ls47原理，针对共阴型数码管，代码简短，可供参考-74ls47 schematic
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Size: 1024 |
Author: 王瑞 |
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Description: XL2000开发板基于74ls47芯片的应用程序-XL2000 development board based on-chip applications 74ls47
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Size: 9216 |
Author: |
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Description: 74ls47的jp19的A,B,C,D接到单片机的PA0,PA1,PA2,PA3 数码管轮流显示0-9-The jp19 74ls47 the A, B, C, D received a single-chip PA0, PA1, PA2, PA3 turn digital display 0-9
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Size: 1024 |
Author: 张兴国 |
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Description: capacimeter digital using 74ls00 74ls90 74ls45 74ls47 design by Hugo Mendez-capacimeter digital using 74ls00 74ls90 74ls45 74ls47 design by Hugo Mendez
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Size: 43008 |
Author: Mario Marcos |
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Description: 使用74LS47实现1314~2020显示-Use 74LS47 achieve 1314 to 2020 display
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Size: 54272 |
Author: 岳涛 |
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Description: 湖南工业大学专科毕业设计（论文）
I 摘 要 随着人们生活水平的提高，如何实现家庭防盗这一问题也变得尤其突出，传统的机械锁由于其构造简单，安全性能低，无法满足人们的需求。随着电子产品向智能化和微型化的不断发展，单片机已成为电子产品研制和开发中首选的控制器，所以具有防盗报警功能的电子密码控制系统逐渐代替传统的机械式密码控制系统，克服了机械式密码控制的密码量少，安全性能差的缺点。通过单片机编写密码程序，并用74LS47和3-8译码器74LS138驱动的数码管来显示密码。数码管可以时时显示当前输入的四位数字。当输入密码正确时，对应的指示灯亮；当密码不正确时，另一个对应的指示灯亮且并且发出声音报警-Hunan college graduate design (thesis) I Abstract With the improvement of people' s living standards, the issue of how to achieve home security has become particularly prominent, the traditional mechanical locks because of its simple structure, low safety performance, unable to meet people' s needs . With intelligent electronics and miniaturization to the continuous development of single-chip electronic products have become the first choice for research and development in the controller, the electronic anti-theft alarm system with password control function gradually replace the traditional mechanical control system password, overcome Mechanical password control password less, poor safety performance shortcomings. SCM program written by a password and use 74LS47 and 74LS138 3-8 decoder driven digital control to display the password. Digital display can always four digits of the current input. When you enter the correct password, the corresponding indicator light When the password
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Size: 19456 |
Author: 叮叮 |
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Description: 利用Verilog HDL语言进行数字系统设计实现秒表的设计，涵盖原理图设计、文本设计以及进行波形仿真，并有对应的报告。报告中还包括BCD/7段译码集成电路74LS47仿真实验、单管分压式稳定工作点偏置电路仿真实验和8路智力竞赛抢答器电路设计-Use Verilog HDL language design and implementation of digital systems design stopwatch, covering schematic design, text, design, and simulation waveform, and there is a corresponding report. The report also includes a BCD/7 segment decoder IC 74LS47 simulation, single-tube type stable operating point voltage divider bias circuit simulation and 8 quiz Responder circuit design
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Size: 465920 |
Author: 文闯 |
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