ADC7841 for 12 4

PCI_Express PCB Guidelines

功能描述： 利用AT89S51单片机的T0、T1的定时计数器功能，来完成对输入的信号进行 频率计数，计数的频率结果通过8位动态数码管显示出来。要求能够对2－40KHZ 的信号频率进行准确计数，计数误差不超过2/1-Functional Description: Using AT89S51 MCU T0, T1 timing counter function, to complete the input signal frequency counting, counting the frequency of 8 resulted in the adoption of dynamic digital tube display. Request to the 2-40KHZ signal frequency accurately count, counting error of less than 2/1

针对avr单片机编的精确延时程序，可达1微妙-against avr microcontroller series of the precision delay procedures, up to a delicate

DDS芯片AD9851的程序，keil编写，AD9851接成并行接口-err

74LS164的芯片资料，很 详 细 的 介 绍-74LS164 chip data, it is in detail

用C编写的TLC549的驱动源码和应用示例-C TLC 549 prepared by the driving source and application examples

利用PWM实现正弦波和DTMF-achieve sine wave PWM and DTMF

stc单片机的iap程序，用c51写的，是从汇编转换过来的-SCM STC IAP procedures, using C51 write is from the compilation of the conversion from the

单片机C语言开发软件KEIL C，该软件上手容易，适宜于各个阶段的单片机爱好者-Singlechip C language development software KEIL C, the software easier to use, suitable for all stages of the single-chip lovers

基于avr（mage16）的bootload实验范例，使用winavr编译。-Based on the avr (mage16) Experimental example of the serial port, use the compiler winavr.