一个电子产品开发时的部分c代码A!绝对能用!

以比较匹配A达到时交替输出高低电平及写入其维持 时间常数之方法实现脉宽调制输出-to compare A match reached the turn at the high output and low-level maintenance time into their methods to achieve constant PWM Output

工频参数测量 megal128 单片机 iccavr开发环境-Parameter Measurement Frequency megal128 Singlechip iccavr Development Environment

触摸屏与键盘接口的LCD控制器RA8806的应用-Touch screen and keyboard interface, LCD controller RA8806 Application

二相四线制步进电机的驱动程序，时序通过验证可正常运转-two phase 4-wire stepper motor drivers, timing can be verified through normal operation

使用单片机的比较器进行AD转换，采用喜歌马、带她方式-use SCM Comparators for AD conversion, using MA-Song, in her way

lpc764AD的例子-lpc764AD

MAX232串口与单片机通讯的电平转换芯片，转换后电压在0-5之间-MAX232 serial communication with the single-chip level translator chip voltage conversion between 0-5

STC51单片机128K sram读写实验的C语言程序，串口调试助手显示。-STC51 MCU 128K sram experimental C-language program to read and write, serial debugging assistant display.

本程序主要通过外部中断INT0及3.3端口读取PS2键盘值并通过LCD1602显示，键扫描码的解码通过数组方式解码，程序的解码功能主要针对数字及大小写字母和常用标点符号 硬件描述：PS2键盘的时钟线（clk）接89S51的INT0（P3.2）,数据线data接（P3.3） LCD的控制端口分别为： RS = P2^7，RW = P2^6，EP = P2^5，数据端口为P0，液晶显示偏压VL必须接 -This procedure mainly through external interrupt INT0 and 3.3 read PS2 keyboard port value through LCD1602 display, key scan code decoder way through an array of decoding, the procedure for decoding function of the major figures and upper and lower case letters and punctuation marks commonly used hardware description: PS2 keyboard clock line (clk) then 89S51 the INT0 (P3.2), data lines data access (P3.3) LCD control port, respectively: RS = P2 ^ 7, RW = P2 ^ 6, EP = P2 ^ 5, data ports for the P0, LCD bias VL must be received