44键盘多模块演示程序，使用双向双次键扫描技术LCALL INKEY 双向双次键扫描...

各种试验课件，包括ARM汇编指令，存储器，接口，时钟，数码管，液晶屏，触摸屏，USB接口，ucos移植等。-courseware for various experiments, including the compilation of ARM instructions, memory, interfaces, clocks, digital control, LCD screen, touch screen, USB, CHANGING transplantation.

单片机定时中断的精确定时编程　里面介绍了５种定时中断的方法误差均不超过1个机器周期-SCM regularly interrupted regular programming precision inside of five species regularly interrupted the error not more than one machine cycle

本程序是在c51下的93c46的驱动程序。对开发小产品大有好处。希望对大家有帮助.-is in the process of 93c46 decoder drivers. Small products in the development process. We want to help.

单片机定时器计算软件,能够很方便的计算出定时器的各个参数-Single-chip timer calculation software can be very convenient to calculate the various parameters of the timer

ST52单片机与ad0804和dac0832接口的C语言例子，含数据手册及接口电路图。-Ad0804 and ST52 MCU and the C language interface dac0832 examples, including data sheet and the interface circuit.

温度测量DS18B20+AT89C2051-temperature measurement DS18B20 AT89C2051

红外通信是利用950nm近红外波段的红外线作为传递信息的媒体，即通信信道。发送端采用脉时调制（PPM）方式，将二进制数字信号调制成某一频率的脉冲序列，并驱动红外发射管以光脉冲的形式发送出去；接收端将接收到的光脉转换成电信号，再经过放大、滤波等处理后送给解调电路进行解调，还原为二进制数字信号后输出。-Infrared communication is the use of near infrared 950nm infra-red as the transmission of information media, namely communication channel. The sending end when the use of pulse modulation (PPM) approach will be a binary digital signal into a frequency modulation of the pulse sequence, and driver fired infrared tube to the form of light pulses sent receiver will receive the pulse of light conversion to electrical signals , and then, after amplification, filtering and other treatment to the demodulation circuit after demodulation, reduced to a binary digital signal after the output.

本程序用于键盘的识别，通过编程，使按下K1键时第一个数码管显示1，按下K2键时第一 //个数码管上显示2，按下K3键时第一个数码管上显示3，按下K4键时第一个数码管上显示4， //对键盘的扫描采用查询方式

PHILIP一双串口单片机P89669的器件资料和用户手册-PHILIP pair of serial devices SCM P89669 information and user manual

串口通讯的上位机软件,希望你能用的上,是用V++写的,-The host computer serial communication software, I hope you can use the upper, is written in V++, thank you