实现stc单片机，两个单片机之间的SPI通讯。单主单从

s3c44b0x和ch375读写U盘程序-s3c44b0x ch375 and U disk read and write procedures

keilc + proteus 并行口设计指示灯实验 要求：掌握80C51单片机输入输出接口使用方法 学会开关量输入输出控制的接口技术及编程方法 实验题目：8个发光二极管D1~D8分别接在单片机P1.0-P1.7端口上，一个开关接在P3.0上。要求输出端口输出 “0”时，发光二极管亮。开关闭合时，开始按P1.0-P1.1-...-P1.7的顺序依次点亮LED，再按 P1.7-P1.6 -...-P1.0的顺序点亮LED，重复循环。开关断开时，立刻停止点亮指示灯。-keilc+ proteus light parallel port design of experiments requirements: master the 80C51 microcontroller input and output interfaces Society of switch to use the amount of input and output control interface technology and programming methods Experimental subjects: eight light-emitting diodes D1 ~ D8, respectively connected to the MCU P1.0-P1 .7 port on a switch connected to the P3.0 on. Requested output port output " 0" , the light-emitting diode light. Is closed, to embark on the P1.0-P1.1-...- P1.7 in the order light LED, and then P1.7-P1.6-...- P1.0 order light LED Repeat cycle. Switch off when the stop light indicator.

做一个电子钟：利用定时器0定时中断，控制电子钟走时；利用单片机上的六个数码管显示时、分、秒。-An electronic clock to do: Using Timer 0 interrupt timing, control of electronic bell away the use of the six single-chip digital display hours, minutes and seconds.

1602液晶的驱动程序，调用其中的函数即可对其命令和数据完全操作！-1602 LCD driver, call a function which can be ordered and its data fully operational!

NRF905的源程序，用于数据的无线收发-NRF905 the source, the wireless transceiver for data

Dallas单片机ds89c420的详细说明和下载软件，使用串口ISP

PIC16F71 C语言的ADC示例程序。已附上详细说明。

利用单片机定时计数器，测量信号频率： 利用单片机定时计数器，测量信号频率-The use of single-chip timer counters, measuring signal frequency: use of single-chip timer counters, measuring signal frequency

本程序是mc145572U接口驱动程序,有一些问题,希望大家指点.-This procedure is mc145572U interface driver has some problems, I hope everyone pointing.