89C2051 generated by PWM signal to control DC motor speed control

8051运算类子程序，包括双字节乘法子程序、多字节数乘10子程序、多字节无符号数出除法子程序、多字节ＢＣＤ码减法子程序、多字节ＢＣＤ码取补子程序、多字节ＢＣＤ码左移十进制一位（乘十）子程序。-8051 subroutine computing category, including double-byte multiplication subroutine, multi-byte count by 10 subroutines, multi-byte unsigned number of the division subroutine, multi-byte BCD subtraction subroutine code, code access multi-byte BCD complement subprogram, multibyte BCD code to the left of a decimal (by ten) subroutine.

飞思卡尔 MC9RS08KA2 最小的单片机-Freescale MC9RS08KA2 the smallest single-chip microcomputer

实现单片机对键盘的响应，并进行LCD显示-Realize single-chip microcomputer in response to the keyboard and LCD display

PIC单片机的外围接口的使用程序，已经调试过，原理说明很详细。-PIC microcontroller to use the external interface procedures are debugging, the principle that in great detail.

对于一个单片机初者来说一定想自己设计一个小系统吧・・这里提供了以89S52为核的小系统图和源程序！希望对刚学者有所帮助-early for a microcontroller were necessarily want to run their own small design a system here to provide it with nuclear 89S52 for the smaller system map and the source! Just want to help scholars

51写的一个例子, 驱动IC为T6963.

抢答器，可以实现很大的功能，比如，计时、抢答，锁定-qiangdaqi

基于HS108设计的红外水位检测仪，内含C源代码，原理图及PCB，稍作改动可以用于很多位置检测场合如油泵位置检测等。-HS108-based design of infrared detector water containing C source code, schematics and the PCB, to make a minor amendment can be used for position detection in many occasions, for example, pumps and other position detection.

绝对正确的SAA7121寄存器初始化值，包括PAL、NTSC,不能用你找我-SAA7121 absolutely correct register initialization value, including PAL, NTSC, you should not use me

at89c2051制作的超声波测距源程序 范围20cm-10m 精度1cm 如果需要电路图 请与我联系！-AT89C2051 source produced by the scope of ultrasonic rangefinder 20cm-10m accuracy 1cm circuit diagram if you need please contact me!