用来做键盘和显示的芯片7279的源代码，用C编的

各种51单片机源程序集，包括浮点数的计算，多字节的加减等算法的实现-SCM source scripts, including floating point calculations, multi-byte such as addition and subtraction algorithm implementation

在keil c51 环境下利用中断方式查询 键盘并实现键值查询等功能-Keil c51 environment in the use of the keyboard interrupt inquiries and realize the functions of key inquiries

单片机音频信号处理软件2.-SCM audio signal processing software 2.

名称：8*8点阵显示 公司：上海浩豚电子科技有限公司 编写：师访 日期：2009.5 修改：无 内容：和数码管显示方式相同，这里使用P0口和P2口-Name: 8* 8 dot-matrix display Company: Shanghai Electronic Technology Co., Ltd. Hao dolphin prepared: Teachers Visit Date: 2009.5 Review: No content: and digital tube display the same way, where the use of P0 and P2 port port

微型打印机的驱动程序，希望对朋友们有用。-This is a driver of micro printer.Hope it is helpful to friends.

Philips SC16C554串口使用基本协议-Philips SC16C554 string mouth use basic agreement

I2C串行总线标准驱动程序(C51)-万能程序 -I2C serial bus driver (C51)- omnipotent procedures

一种能产生宽调节占空比的PWM芯片，适合做逆变电源。-Can generate a duty cycle of the PWM chip width adjustment, suitable for power inverters.

4*4键盘扫描 参数以定义 直接使用 -4* 4 keyboard scan parameters used directly to the definition

快速傅里叶变换在单片机中的实现,可用来显示生音波形