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红外通信的程序以及使用还有电路的设计大家可以参考使用-ZHX101

8051单片机上用C写的ps/2的实验程序，可以接受键盘输入并在串口显示-8051 C wrote on the ps/2 of the experimental procedure can accept keyboard input and serial shows

51单片机（汇编）浮点转换及浮点格式说明程序--51 SCM (assembly) floating point conversion and floating point format description.

用单片机C语言编的通过键盘扫描得到键值的键盘扫描C程序的源代码，可供单片机开发人员参考。-MCU series of the C language keyboard scan keys keyboard scan C program"s source code available to developers SCM reference.

51的4*4键盘驱动当按键按下时返回一个值，且只在按下键时返回一次该值，之后返回0；无按键时返回0；包含消抖功能，在键盘的下降沿触发。 基于keil平台-51 4* 4 keyboard driver when the button is depressed to return a value, and press the button only once the value to return, followed by return 0 no keys to return 0 contains extinction Buffeting function, the falling edge trigger at the keyboard. Keil-based platform

用单片机实现波形发生器，含电路图，原理图，源码-generate wave

基于凌阳SPCE061A单片机的多功能测频测相仪-Sunplus SPCE061A-based single-chip multi-frequency phase measuring instrument

单片机外围电路emc设计(powerpoint)-microcontroller peripheral circuit design Smarts (powerpoint)

eagle circuit for MP3 expander

单片机和计算机的串口通信,简单方便的通信方式,成熟的VB设计界面和高效的单片机技术-Single-chip and computer serial communications, is simple and convenient means of communication, mature VB interface design and efficient single-chip technology