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。...

基于NRF905 915M频率的232通信-NRF905 915M based on the frequency of 232 communications

linux系统下的源代码,用C++语言编写的温度控制系统-linux system source code, C language prepared by the temperature control system

采用高发射功率红外光电二极管和高灵敏度光电晶体管组成。 光缝宽度（分辨率）有0.8mm、0.4mm两种。-High transmit power infrared photodiode and high-sensitivity phototransistor. Optical slit width (resolution) of 0.8mm, 0.4mm two kinds.

1．熟悉硬件仿真工具KD30的使用。 2．修改样本程序 SAMP1a，使无论在计数或停止计数时，按 SW3 均对计数值清零，并停止计数。 3．编制一个秒表程序, 测试精度为0.1秒，按 SW1键启动计数，再按一次 SW1键停止计数。任何时候按 SW3 键停止计数，并对计数值清零。 4．按 SW1键后， 以 0.1 秒为单位开始计数，再按一次 SW1 键停止计数。若按 SW1 键时间超过2秒，则计数值清零，回到初始状态。-1. Familiar with the hardware simulation tool KD30 use. 2. Revised procedures SAMP1a samples, regardless of the count or counts at the end, according to SW3 numerical terms were right, reset, and stop counting. 3. Preparation of a stopwatch procedures, testing accuracy of 0.1 seconds, according to bond SW1 start counting, according to a key SW1 stopped counting. By SW3 any time to stop counting bond and reset the count. 4. By SW1 bond, after 0.1 seconds for start counting, according to a key SW1 stopped counting. If SW1 keys by the time more than two seconds, then reset the count and return to the initial state.

本款强排式热水器采用

4*4扫描键盘,通过键值通过4个数码管显示出来.-4* 4 Scanning keyboard, through key through four digital tube display.

一些实用的单片机c程序-some practical procedures SCM c

液晶显示模块手册中文详细说明，解决英文难懂的问题

C8051F06X单片机编程，UART模块代码-C8051F06X Microcontroller Programmer, UART module code

51单片机直接驱动液晶显示，里面有两个程序！-51 Single-chip Direct Drive Liquid Crystal Display, which has two procedures!