8031直接驱动LED的电路 以下是利用8031的I/O口直接驱动LED的电路原理图。电路通过8031的P0、P2口连接一片74LS373和一片27128构...

题目：给一个不多于5位的正整数，要求：一、求它是几位数，二、逆序打印出各位数字。 1. 程序分析：学会分解出每一位数-Title: to a more than five positive integer, following requirements: First, for it is the number of a few, two, reverse print out all the figures. 1. Procedure Analysis: Institute of decomposition of each median

控制中断的汇编代码-control interrupted code compilation

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串口程序源码，C语言，需要的同志可以下载哈-Serial program source code, C language, the need for comrades can download Kazakhstan

用 AT89S51 单片机的定时 / 计数器 T0 产生一秒的定时时间，作为秒计数时间，当一秒产生时，秒计数加 1 ，秒计数到 60 时，自动从 0 开始。-with AT89S51 SCM timer/counter T0 produce than the regular time, seconds count as a time when a second time when, seconds count plus one, count to 60 seconds, the automatic starting from 0.

电子钟课程设计.doc-electronic bell curriculum design. Doc

用汇编语言实现的倒计时器，利用1C中断每秒中断约18次的特性，在根据中断次数计算时间，每过一秒，时间以十进制显示在屏幕上，时间减到零时程序退出。-Using assembly language implementation of the countdown device, using 1C interrupted about 18 times per second interruption characteristics, in accordance with interruptions computation time, with every passing second, the time displayed on the screen in decimal, the time reduced to zero to quit.

一款非常小的液晶显示屏，适合于便携式设备使用。-A very small LCD screen, suitable for use in portable devices.

无线电话加来电现示加收音机-telephone calls increase is the radio show increases

基于DSP2407的快速傅里叶变换程序，来源合众达DSP例程-fast fourier transform BASED ON DSP