是protel的讲义，应该有利于大家的学习

这是一个c8051F020单片机通讯程序，请各位大侠，看了后多提宝贵意见。-C8051F020

单片机控制步进电机启动停止，正反转以及转速。proteus+keil.(由于大小不够，还加入了RS485在单片机多机通信中的应用，用到RS485接口芯片max487)-keil+proteus+motorstepper

单片机开发源代码, 单片机开发源代码.-Single-chip development source code, source code to develop single-chip, single-chip development source code.

在需要计算的设计中，诸如：收款机、计算器等经常遇到2位小数的处理，简单的处理方法就是将数据乘以100后存储、处理，现提供一函数用于6字节除以100的n次方-calculated in the design, such as : cash registers, calculators often encountered two decimal treatment, the simple approach is to be multiplied by 100 after the data storage, processing, we provide a function to 6 bytes divided by the n-th 100

Verilog实现的DDS正弦信号发生器和测频测相模块，DDS模块可产生两路频率和相位差均可预置调整的值正弦波，频率范围为20Hz-5MHz，相位范围为0°-359°，测量的数据通过引脚传输给单片机，单片机进行计算和显示。-Verilog realize the DDS sine wave signal generator and frequency measurement module test phase, DDS module can generate both frequency and phase difference can be preset to adjust the value of sine wave, frequency range of 20Hz-5MHz, phase range of 0 °-359 ° , measurement data and transmit them to the single-chip pin, single-chip microcomputer to calculate and display.

ADuc812的ADC转换程序,经测试没有问题-ADuc812 the ADC conversion process, tested no problem

常用元件汇总，包括：1N系列二极管、74系列、4000与4500、变容二极管参数、常用二极管、常用芯片、场效应管性能、光电器件、横流二极管、快恢复二极管、三极管等-Summary of commonly used components, including: 1N series of diodes, 74 series, 4000 and 4500, Varactor parameters, commonly used diodes, commonly used chip FET performance, optoelectronic devices, cross-flow diodes, fast recovery diodes, transistors, etc.

基于msp430的液晶显示模块LCM141-MSP430-based liquid crystal display module LCM141

详细介绍MP3的编码原理,有大量图示,好看就要顶下,-Detail MP3 encoding principle, has a large number of icons, we should look under the roof,

很经典的单片机程序，可以实现单片机与FPGA的通信-Is the classic single-chip process can be achieved with single-chip FPGA communications