C51入门源码，程序功能使单片机播放音乐，附有详细注释

四相步进电机正反转驱动原代码，汇编语言编写-Positive four-phase stepper motor driver source code, compiled languages

在at89c51上实现webserver-AT89C51 achieved in the webserver

使用微芯公司的PIC8F458单片机，用C语言实现B口电平变化中断程序，并且在中断中用C实现步进电机的驱动程序。-The use of Microchip

时钟单片机汇编程序,可以随意调整时间-Single-chip clock compilation process can be time to adjust. . . .

Freescale i.MX51 debug board - boot from USB-Freescale i.MX51 debug board- boot from USB

MSP430开发，功能强大，非常适合于MSP430单片机开发。-MSP430 development, powerful, very suitable for single-chip MSP430 development.

基于等精度测频原理，设计的等精度频率计，测试结果很精确，达到0.01HZ。-Such as the accuracy of frequency measurement based on the principle of design, such as precision frequency meter, test results are accurate to 0.01HZ.

单片机串口程序，可以通过keil编译，实现一台主机和多台从机的通信，从机挂接同一条总线,主机对通信有决定权 -MCU procedures, Keil compiler can achieve a host and multiple communications from the plane, from the plane with an articulated bus, the mainframe has the right to decide Communications

准确，快速，方便地获得温度在现代企事业单位，厂房车间和家庭中有着越来越重要的意义。本文设计了一套基于MSC51单片机的温度采集系统。应用该系统可以即时、准确地获得两路温度参数（可扩展至256路），测温范围达0~125C，参数精确至0.25C，并可以现场控制欲采集的指定传感器的温度参数，通过数码管显示出来，通过RS232接口可连接至计算机，并通过监控软件观察实时数据和波形。该系统具有易扩展、精度高、成本低等特点，适宜现场监控，实验室，家庭等对温度有要求的场所。-Accurate, rapid and easy access to the temperature in the modern enterprises, plant has a home workshop and more and more important. This article has designed a single chip MSC51-based temperature acquisition system. Application of the system can be immediate, accurate access to two temperature parameters (can be expanded to 256 road), temperature range of 0 ~ 125C, precise parameters to 0.25C, and can be collected at the scene To control the temperature of the sensor parameters specified by the digital tube shown through RS232 interface can be connected to the computer and monitoring software through real-time data and waveform observation. The system is easy to expand with high precision, low cost, and suitable for field monitoring, laboratory, on the home

ATmaga128 串口通信程序 （可实现收发数据和字符串）-ATmaga128 serial communication program (which can send and receive data and achieve string)