这是一个关于ARM9 pcb and sch的压缩文档,希望能给你帮助.

HIDTHIS SPECIFICATION IS PROVIDED “AS IS” WITH NO WARRANTIES WHATSOEVER INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE.-Human Interface Devices

实战四《简易四路抢答器》，程序文件名:"MCD-INTBUZ.ASM"，在8255单片机上实现-four real "Simple 4P Responder" program file name : "MCD- INTBUZ.ASM", in 8255 MCU to achieve

Java写的门禁系统。 功能包括： 可以凭借密码、胸卡或指纹进入 身份进行验证 监控室通过按钮直接开启 新职员支持密码进入-Access control system written in Java. Features include: can rely on password, badge or fingerprint to verify identity to enter the control room directly through the button to open a new staff to support the password to enter the

用单片机控制74LS244做的串口通信系统。-74LS244 done with single-chip microcomputer to control the serial communication system.

24c16读写程序，I2C总线的，我试过，可以使用-24c16 literacy procedures, I2C bus, I tried to use

uPSD34xx Disk driver

Tea5767的3线控制程序，M8单片机，采用3线控制，内有电路原理图，可手动指定频率，也可以上下搜索-TEA5767 the 3-wire control procedures, M8 MCU, using 3-wire control with a circuit schematic can be manually specified frequency, can also be upper and lower search

使用IA4421无线射频芯片传输数据，发送端通过串口每次发送多字节，接收端将接收到的数据显示在上位机上。-IA4421 chip using radio-frequency transmission of data through the serial port for each sender to send multi-byte, the receiver will receive the data displayed in the upper machine.

SMC162的驱动 源码在51单片机中测试过-SMC162 source of the 51 drivers in single-chip tested

8051c 的一个Crc 算法分析-8051c of an algorithm analysis Crc