实用的空调计费系统，采用51系列单片机，编译软件KEIL C

实现钟表的基本功能，可以通过串口改时间，有记星期的功能，也可通过键盘改点-it can realize a clock s function ,can modify it s clock via serial and keys.can remember wenkends,

可驱动8/16位数码管显示或64/128只独立LED 的芯片BC72811A中断编程。BC7281A只占用单片机3个I/O口-can drive 8/16 Digital Display or 64/128 only independent LED chip BC72811A interrupted programming. BC7281A only occupies three microcontroller I/O port

单片机实现的网卡程序,其中控制4个网卡的轮番查询 -the MCU card procedures, which control the four turns inquiry Card

自己用汇编编写的键盘的扫描程序 希望和大家共享!-his own compilation prepared by the keyboard scan and you will share!

PCF8563T读写功能程序（原创）-PCF8563T read and write capabilities (original)

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.

一个不错的硬盘播放器程序,包含VFD显示程序,红外线遥控程序,硬盘读写程序,及解码程序等.-a good hard disk player procedures, including procedures VFD, infrared remote control procedures, hard drive read and write procedures and decoding procedures.

/// ///DAC调试程序/// ///// /// ///T2定时更新DAC1输出///////////////////// ０４０ ////////DAC0为直接更新/////////////////////////// /////////DAC.c-//////DAC debugger////// ///////////T2 is updated regularly to DAC1 output ///////////////////// 040 //////// DAC0 for direct update ////////////////////////////////////DAC.c

基于单片机c8051f020的模数转换，数模转换应用实例-C8051f020 based on single-chip analog-to-digital conversion, digital-to-analog converter application