超声波测距,包括有pcb原理图，用c写的程序，还有详细的说明

基于AVR的 8*8 LED点阵显示源代码-based on the AVR 8* 8 LED display system source code

用AT89C2051设计的PC-AT键盘源代码-AT89C2051 design with the PC-AT keyboard source code

以GMS97C2051单片机为核心，采用TLC2543 12位串行A/D转换器，设计了一个串行数据采集/传输模块，给出了硬件原理图和主要源程序。-to GMS97C2051 as the core, using TLC2543 12 serial A/D converter, the design of a serial data collection/transmission module provides the hardware schematics and the main source.

点阵式LED“0－9”数字显示技术-Dot-matrix LED

研究所积累的资料7,大家秘密使用,千万别告诉别人!-7 Institute of accumulated data, we use a secret, please do not tell others!

9320 drvice code -9320 drvice code

A/D转换，转换结果用液晶显示出来，液晶是OCMJX12864。显示的结果是数字量。使用的是ADC0809。（有原理图）-A/D conversion, conversion results liquid crystal display, LCD is OCMJX12864. The result is digital displays. Are using the ADC0809. (With schematic diagram)

周立功单片机ARM学习板easyARM2104的测试程序等-weeks learning meritorious ARM MCU board easyARM2104 testing procedures

用C语言实现的1602液晶显示程序，程序已经调试好了-Using C language program of the 1602 liquid crystal display, the program has good debugging

c8051f020键盘和显示器源码，用hd7129来驱动-C8051f020 keyboard and display the source code used to drive hd7129