Universal Serial debugging procedures

利用89C2051实现模数转换的一种方法源程序，该程序使用C51语言编写，可以用于MCS8051单片机-use 89C2051 analog-digital conversion of a way to the source, the procedure used to prepare C51, SCM can be used Mcs8051

atmega128在线升级程序，自编程通过xmodem协议 -atmega128 online promotion procedures, since the programming agreement through XModem

用PIC16F7877A实现测量市电电压A/D转换-PIC16F877A A/D

单片机 Keil＋proteus 并行口设计数字键盘实验 要求：掌握动态显示、动态扫描键盘的工作原理及硬、软件的设计、调试方法 掌握80C51接口硬件电路设计方法及软件编程方法 了解80C51外部中断的使用和编程方法 实验题目：并行口实现数字0~9、A~F、L、U、P、n总共20个键盘，将按键的结果用7段数码管显示出来。-Parallel Port numeric keypad test requirements: master the dynamic display, dynamic scan the keyboard works and the hardware and software design, debugging the means to acquire 80C51 interface hardware circuit design methods and software programming approach to understanding the 80C51 external interrupts use and programming methods Experimental subjects: parallel port for digital 0 ~ 9, A ~ F, L, U, P, n total of 20 keyboard, the result will be keys to use 7-segment digital tube display.

ARM程序，2*2键盘功能，程序可扩展成3*3或4*4的键盘，在LPC2103上测试成功。-ARM procedures, 2* 2 keyboard functions, procedures can be extended into a 3* 3 or 4* 4 keyboard, to test the success of the LPC2103.

该文档包含了keilc常用的子程序，共有２５个运算类代码，非常实用．-This document contains commonly used keilc subprogram, a total of 25 computing category code, very useful.

51-320240液晶操作程序-51-320240 LCD operations

NE5532+TDA2030 原理图及PCB-NE5532+ TDA2030 Schematic and PCB

此程序是430系列恒流源程序。对初学者很有帮助。-This procedure is a constant current source 430 series. Very helpful for beginners.

C8051F040 t3可调频率方波输出例程-C8051F040 adjustable frequency square-wave output routines