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Source
某公司安装了电子门，要设计门禁系统：
公司的雇员可以凭借密码、胸卡或指纹进入公司
计算机根据雇员的验证方式对其身份进行验证
管理员在监控室可以通过按钮直接开启电子门
访客可以按门铃请求进入，由管理员为其放行
管理员可以为新职员设置密码
(A company to install an electronic gate, to design access control systems: the company' s employees can rely on passwords, badges or finger into the company computer, authentication of the employee to verify their identity can be an administrator in the control room directly through the button to open electronic gates that visitors can rang the doorbell of the request to enter an administrator can be released by the administrator of its staff to set a password for the new)
- 2009-09-09 08:40:07下载
- 积分：1
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AD7991-C-language-with-keil
AD7991采集数据程序，C语言编程，keil软件，可实现三通道轮流采集，程序中添加串口显示返回值，亲测，可用(AD7991 data collection procedures, C programming language, keil software, can achieve a three channel samples in turn, add serial program to display the return value, pro test available.)
- 2016-03-03 11:29:52下载
- 积分：1
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mega16-simple-example
通过一个简单例子，说明C语言对于学习单片机的重要性，有助于新手的入门.(By a simple example to illustrate the C language for learning the importance of SCM to help novice entry.)
- 2013-11-18 13:27:00下载
- 积分：1
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F407 矩阵键盘
STM32外扩4*4矩阵键盘，包含原理图及源码。(STM32 extends 4*4 matrix keyboard, including schematic diagram and source code.)
- 2020-06-20 18:40:02下载
- 积分：1
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pwm输入+dma
PWM输入+DMA，亲测可用，有需要的朋友可以自行下载。(PWM input + DMA, pro-test available.)
- 2020-06-19 04:20:01下载
- 积分：1
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14_zgonena
SAFETY STANDARD FOR
DISTRIBUTED GENERATION
- 2015-12-03 16:15:36下载
- 积分：1
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lmx2594
说明： 本程序使用8051F330为主控100M鉴相VCO锁频输出(This program uses 8051F330 as the main control 100M phase detection VCO frequency lock output)
- 2020-12-07 00:19:22下载
- 积分：1
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recive
说明： oled显示openmv二值化图像，并通过按键修改阈值(OLED display openmv binary image)
- 2020-06-19 18:20:01下载
- 积分：1
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Sauare_wave_changed-V1.2
8、可变频率方波发生器
用单片机的定时器设计一个频率可变的方波发生器，输出频率范围1Hz~500Hz，频率输出精度为0.5Hz。要求可以实时显示当前输出的频率，可以用键盘来设定方波发生器的输出频率，具有直接设定或逐渐调节的功能，调节分辨率和显示分辨率均为0.5 Hz，其它电路自由发挥。(8, variable frequency square wave generator with single-chip microcomputer timer design a variable frequency square wave generator, the output 1 Hz ~ 500 Hz frequency range, frequency output precision is 0.5 Hz. Requirements can real-time display current output frequency, can use the keyboard to set the output frequency of square wave generator, has the function of directly set or adjust gradually adjust the resolution and display resolution of 0.5 Hz, free play other circuits.)
- 2014-07-29 09:55:54下载
- 积分：1
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I-LOVE-U
数码管显示I LOVE Y，此程序为51单片机程序，如需使用请自我更改(The digital display I LOVE Y-this program for 51 single-chip program, For self-use, please change)
- 2012-04-13 14:20:42下载
- 积分：1
