键盘扫描及返回相关数据,只是读键盘与功能实现的一个接口函数...

mifare rc500 读卡器源码-MIFARE reader source rc500

温度传感器18B20的典型应用，通过18B20采集温度，可以精确到小数点两位，在LED或LCD上显示-Temperature Sensors Typical applications 18B20, 18B20 collected through the temperature, can be accurate to two decimal places, in the LED or LCD display

很多8051的例子，对初学者而言，很有用！-many examples of 8051, for beginners, very useful!

用C语言编写的PIC单片机一些例程源代码，很有参考价值。-C language prepared by the PIC source code of some routines, great reference value.

美国TI公司的protel 元器件库，在应用中需要更新，本人收集了最新的版本共30M，为提高上传速度分六次上传。文件名依次为TI_1到TI_6。希望大家设计电路板时少走弯路这里是TI_3-TI" s U.S. Treasury protel components, need to be updated in the application, I collected a total of up-to-date version of 30M, to improve the upload speed upload six hours. File name followed by TI_1 to TI_6. Hope that the design of circuit board is less detours here TI_3

本文件包括葡丰概率实验测定pi的方法介绍和matlab实现方法，简单易用。-This document includes the experimental determination of the probability of Portugal Fung pi method matlab introduction and realization of methods, easy to use.

两线制的 温湿度 电流变送器 实验板，MSP1232-Two-wire current transmitter for temperature and humidity in the experimental plate, MSP1232

凌阳最出的超声波测距模组，通过555产生40KHz的超声波，有SPE061A单片机控制超声波的发射和接收，最初的版本在程序方面比第二版本来得简单，主要是通过了硬件电路减少了程序，附电路图、PCB图等-Sunplus most of the ultrasonic ranging modules, 40KHz generated through 555 of the ultrasound, ultrasound has SPE061A single-chip microcomputer to control the transmitting and receiving an initial version of the procedure than the second version is more simple, mainly through the reduction of hardware circuit procedures, with schematics, PCB map

设计很好的一个单片机232处理程序，应用于单片机处理速度慢，上位机数据快的情况下-Well-designed a microcontroller 232 handler, used in single chip processing speed slow, fast PC data in case of

基于凌阳单片机的语音 手动 播放音乐 的 汇编程序-Sunplus based on single-chip voice manually play the music of the assembler