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

AVR单片机入门及C语言高效设计实践（四） ATMEAG16L的I／O端口特点及使用 ATMEAG16L单片机有32个通用I／O口，分为PA、PB、PC和PD四组，每组都是8位。这些I／O口都可以通过各自的端口寄存器设置成输入和输出（即作为普通端口使用），有些I／O口还具有第二功能（我们在后面使用到这些第二功能时再介绍）。-AVR C language portal and efficient design practice (4) ATMEAG16L the I/O Ports characteristics and use of a microcontroller ATMEAG16L 32 common I/O mouth into PA, PB, PC and PD four groups, each group are eight. These I/O I can through their respective ports Register set to input and output (that is, use as a general port), Some I/O I also have the second function (in the back of the use of these second function tell).

STC12c5410AD PWM

PIC运算程序库 集合包,汇编程序格式，可直接运用于PIC16F8xx系列单片以及与此指令兼容的PIC单片机-PIC computing library collection package, assembler format, can be directly applied to PIC16F8xx series of single-chip, as well as compatible with this directive PIC microcontrollers

MAX5403/5404/5405系列数字电位器的广泛应用，可用于AGC和可调参考电压电路-Digital Potentiometers MAX5403/5404/5405 series of widely used, can be used for AGC and adjustable reference voltage circuit

湖北XX县电能卡表写卡机源码。PIC16f73开发，请不要用于不良用途-Hubei XX County Energy card table to write cards for FOSS. PIC16f73 development, please do not use bad for

AES单片机加解密程序 很好的一个程序，大家赶快下载-Single-chip AES encryption and decryption process, a good procedure, everyone quickly download

8051 的一个键盘扫描的程序-8051 a keyboard scan procedure

8051F_Modbus.rar是在C8051F020单片机上编写的ＣＲＣ１６校验的MODBUS协议.-C8051F020 Singlechip 8051F_Modbus.rar is prepared CRC16 checksum of the MODBUS protocol.

PIC单片机的定时器使用的demo程序.内附说明.-PIC MCU timer used demo program. Containing a note.