AD转换器AD7890驱动程序（KeilC51）

这是自己写的关于PS2键盘接口的程序，和单片机的接口，用汇编写的，测试成功，与图形点阵液晶联合使用，不过液晶程序没有上传-This is his writing on the PS2 keyboard interface procedures, and the microcontroller interface, with a compilation of written test successfully, and graphics dot-matrix LCD joint use, but not to upload procedures LCD

基于单片机的数字频率计设计，定时器T0完成定时功能，T1采用计数功能-MCU-based design of digital frequency meter, timer T0 timing finish, T1 using count function

STC89C58RD+系列软件实现多串口-STC89C58RD+ Series software multi-serial

C语言的KEY4X4的矩阵键盘,已经调试成功.可以很便移植,是本人自己写的.-C language KEY4X4 matrix keyboard, has been successful debugging. Can be transplanted, it is I wrote it myself.

改进的胶印机印刷控制程序，效率提高5倍。-Offset printing improved control procedures, improve the efficiency of 5 times.

脉冲发生测试.此程序为AD9850（DDS）直接数字频率合成器C语言源码。用125M的有源晶振，频率无失真输出可达到40M。-Impulse test. This procedure for the AD9850 (DDS) Direct Digital Frequency Synthesizer C language source code. With 125M active crystal, the frequency output can be achieved without distortion 40M.

利用ps2键盘向单片机输入数据，这样做不仅可以减少输入输出口，而且程序代码短小精悍，可以极大的提高单片机的执行效率．-Ps2 keyboard to use single-chip input data, to do so not only can reduce the input and output port, and program code dapper, you can greatly improve efficiency in the implementation of SCM.

用51内部定时器在Keil uVision3环境下开发的，可调时间和日期的数字钟，并用1602进行显示。-With 51 internal timer in the Keil uVision3 development environment, the time and date Adjustable digital clock, and display 1602.

S3C2450_51_16的PCB布线文档，做板子的要看看啦-S3C2450_51_16 the PCB layout files, do the board" s look at看啦

设计要求 1）. 抢答器同时供 8名选手或 8个代表队比赛，分别用 8 个按钮 S0 ~ S7 表示。 2）. 设置一个系统清除和抢答控制开关 S，该开关由主持人控制。 -fadfsdhfjhsdkfjsdfkjsdlfkdsljdsakljkdsafgjdsf