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AT89S51的并行口P1接4×4矩阵键盘，以P1.0－P1.3作输入线，以P1.4－P1.7作输出线；在数码管上显示每个按键的“0－F”序号。-AT89S51 the parallel port P1 then 4 × 4 matrix keyboard to P1.0-P1.3 as input lines to P1.4-P1.7 for output line in the digital control button displayed on each of the " 0-F" serial number.

汇编语言的课程设计，用win32汇编写的一个计算器程序，访windows自带实现了标准型的计算-Assembly language of curriculum design, use win32 compilation written a calculator program, visit its own windows to achieve the standard calculation

国外高手参加世界编程大赛-foreign experts participating in the programming contest

4*4键盘扫描，依据键值，LCD双行显示，双行显示满后，清屏，重新显示-4* 4 keyboard scanning, based on keys, LCD double display, double line after the expiry of the Qing-ping, re-display

如果要进行农历跟正历的转换　那么这个程序就是用来转换的-to the Lunar calendar is with the conversion Well, this procedure is used for conversion

6led的汇编程序，编译后显示12345678-6led the assembler, compiler revealed 12345678

编写程序，程序运行时使PC机成为一架可弹奏的“钢琴”。当按下数字键1~8，依次发出1，2，3，4，5，6，7，I八个音调。按CTRL+C则退出“钢琴”状态。-Write a program, the program is running to make PC-1 may play into the " piano." When pressing the number keys 1 to 8, followed by issue of 1,2,3,4,5,6,7, I eight tones. Press CTRL+ C has withdrawn from the " Piano" state.

这是一个矩阵键盘按钮液晶1602流动显示预定字符，适合初学者及工程应用。-This is a keyboard button matrix LCD shows scheduled for 1602 mobile characters for beginners and engineering applications.

检查电脑是否染毒的程序,将原代码上传以下,大家看看,应该有所帮助的!-check whether exposure to the procedures, following the original upload code, we see that should help!

单片机实现键盘输入数码管显示。给sclk8个上升沿就可以控制一个8段数码管了，当移位寄存器满了后，给st一个上升沿，就可以显示数据了-SCM keyboard input digital tube display. To a rising edge sclk8 can control an 8-segment digital tube, and when the shift register is full, after a rising edge to the st, you can display the data of the