MCS51单片机实用子程序

在C8051F930单片机上，利用端口匹配和PCA实现按键的长按、短按功能。-In the C8051F930 microcontroller, using the port matching and PCA to achieve a long button press, short press functions.

CH451的LED驱动及8*8键盘驱动程序 CH451的LED驱动及8*8键盘驱动程序 -CH451 the LED driver and 8* 8 keyboard driver for the LED driver CH451 and 8* 8 keyboard driver

SPMC75F2413A单片机在AC变频空调中的应用-Singlechip SPMC75F2413A in AC inverter air conditioner application

通过8255查询键值，显示不同的数字。k1显示1，K2显示2，K1和K2显示3,如此类推。最多能显示7。-8,255 inquiries through the keys, show different figures. K1 shows a, K2 showed 2, K1 and K2 showed three, and so forth. The most that can be shown 7.

单片机开发测试产线流水线速度，led显示速度-Single-chip development and testing of production line assembly line speed, led display speed

红外线IR在单片机中的应用及原理-infrared IR in SCM Application of Principle and

一个单片机控制继电器的程序。用C编，可实现一定的基础控制功能

为Visual borland c builder实现Vision2 DLL

用汇编写的音乐门铃的程序，虽然程序不大，但程序的内容很丰富，另配有PROTEUS的电路图。-Compilation of music written by doorbell procedures, although the procedure, but the procedure is very rich in contents, reprovision PROTEUS have the circuit diagram.

2008北京奥运会的倒计时牌的课程设计,3块数码管分别显示年月,时间,剩下的天数-The countdown to the 2008 Beijing Olympic Games licensing curriculum design, digital tube 3, respectively, show the date, time, number of days remaining