Serial communication utility, suitable for beginners to do serial communication...

这是用asm编写的加法程序，是用16位的凌阳单片机汇编-This is asm2 procedures for the preparation of the additive, used 16 of Sunplus MCU Series

C51与HT9170和HT9200接口程序(双音多频)-C51 with HT9170 and HT9200 interface program (DTMF)

用51单片机c语言编写的键盘扫描程序-With 51 single-chip c language keyboard scanner

vfd driver

4*4矩阵键盘（行扫描法） （S51环境）-4* 4 matrix keyboard (line scanning) (S51 environment)

使用的同步串行三线SPI 接口，可以方便的连接采用SPI 通信协议的外围或另一片AVR 单片机，实现在 短距离内的高速同步通信。ATmega128 的SPI 采用硬件方式实现面向字节的全双工3 线同步通信，支持主 机、从机和2 种不同极性的SPI 时序，通信速率有7 种选择，主机方式的最高速率为1/2 系统时钟，从机方式 最高速率为1/4 系统时钟。-Use three-wire SPI synchronous serial interface, can be used to facilitate the connection of the external SPI communication protocol or another chip AVR microcontroller, realize in the short distance high-speed synchronous communication. ATmega128

4*4矩阵键盘（查表法） （C51环境）-4* 4 matrix keyboard (look-up table) (C51 environment)

基于51系列单片机的串口通信测试程序，希望对大家有帮助-Based on 51 Series Single-chip serial communications test program, and they hope to have everyone help

LPC2103，ADC源码，很好用的，IAR环境下编译-LPC2103, ADC source, well used, IAR compiler environment

基于单片机8051的嵌入式开发指南.pdf 电子工业出版社-Based on the 8051 single-chip embedded development guide. Pdf Publishing House of Electronics Industry