Pwm control on an example, based on 8051f020 an example.

基于ARM中LPC2131芯片，编写的关于SPI的源程序！-Based on the ARM in LPC2131 chip, prepared by the SPI, source code!

基于s3c44b0的芯片实现触屏的彩色显示。-The chip-based s3c44b0 touch-screen color display.

由8051组成的单片机系统通常情况下，P0口分时复用作为地址、数据总线，P2口提供A15-A8即高8位地址，P3口用作第二功能，只有P1口通常用作I/0口。P1口是8位准双向口，它的每一位都可独立地定义为输入或输出，因此既可作为8位的并行I/O口，也可作为8位的输入输出端。当工作在输入方式时，对应位的锁存器必须先置1,才能正确地读到引脚上的信号,否则,执行读引脚指令时,若对应位的锁存器的值为0，读的结果永远为0。-By 8051, composed of single-chip microcomputer system under normal circumstances, P0 timeshare I reuse as address, data bus, P2 I provide A15-A8 high eight address, P3 mouth for the second function, I usually only P1 for I/0 I. P1 I was eight quasi-two-way port, it can be independent of each and every defined as input or output, it can be used as 8-bit parallel I/O port, can also be used as 8-bit input and output side. When the work in the input, the corresponding bit latch must first buy one in order to correctly read the signal pin, or pin the implementation of reading instruction, if the corresponding bit latch the value of 0, Reading the results of Forever to 0.

MEGA16 驱动开发板上的继电器,按不同的独立键，交替改变继电器开关状态-mega16 drive PWM

给大家上传个proteus仿真单片机和PC串口通讯的例子-Give you a Proteus From simulation single-chip computer and PC serial communication example

详细介绍了以太网收发器RTL8019芯片，中文文档，免除了读英文文档的痛苦和低效-Described in detail RTL8019 Ethernet transceiver chip, Chinese documents, eliminating the pain of reading the document in English and inefficient

这是AD转换芯片AD7705的初始化程序，主要是寄存器的配置-This is the AD conversion chip AD7705 initialization procedure is the configuration register

单斜率模拟数字（ A / D转换）演示代码-Single-Slope Analog-to-Digital (A/D) Conversion

YM12864lcd功能模块，只要做少量的定义可以移植到n多平台-YM12864lcd function modules, as long as the definition of a small amount to do can be transferred to the n multi-platform

定时器的操作通过定时器的操作完成系统的精确定时，-The operation of timer operation is completed through the timer system precision timing,