此程序是利用51单片机，控制蜂鸣器接口高低电平，让其发出歌声。...

此源代码为UC/OS-II移植到51单片机的源代码.包括OS_CPU.H,OS_CPU_C.C,OS_CPU_A.S三个主要文件-this source code for the UC/OS-II transplants to 51 SCM source code. Including OS_CPU.H, OS_CPU_C.C, OS_CPU_A.S three key documents

四位数码管显示 没1分钟进1位 是通过最原始的51单片机来实现的 -Four digital display not one minute is one of 51 through the most primitive single-chip microcomputer to realize the

字库代码提取，在电子行业单片机应用有帮助！-font code extraction, in the electronics industry SCM application help!

用增强型单片机51RD2做的控制器，功能包括驱动320*620的LCD，AD/DA采集，键盘采集，微型打印机接口，多CPU通信，ISP在线远程下载等。-with enhanced microcontroller 51RD2 do controller, Driver features include 320* 620 LCD, AD/DA acquisition, keyboard acquisition, micro-printer interface, Multi-CPU communications, remote ISP online downloads.

完全实用化的020 SMBUS程序（与时钟PCF8563通信）.rar经调试,很正确的.-Entirely of 020 SMBUS utility program (with the clock PCF8563 communication). Rar by debugging, it is correct.

89c51的iic 读写的程序-89C51 to read and write procedures for the IIC

单片机外围电路，扩展的4×4键盘液晶显示程序-Single-chip peripheral circuits, expansion of the 4 × 4 keyboard LCD process

msp430浮点库,浮点运算很好的例子!-Controller floating point libraries, floating-point operations a good example!

it can be used to learn programing for 51

51单片机模拟spi串行接口程序，在keilc51下编写-51 single-chip analog spi serial interface procedures keilc51 prepared