利用8255可编程并行口做一个扫描键盘实验，把按键输入的键码，显示在由8279控制的七段数码管上。8255PA口做键盘输入线，PB口作扫描线

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

经典的迷宫算法，这是一个迷宫算法很好的例子，不懂的人可以下来-classic maze algorithm, which is a maze algorithm good example, but not the people can look down

使用p16f876单片机，实现红外遥控接收和学习功能-P16f876 use microcontroller, infrared remote control to receive and realize the functional study

这是用汇编语言编写的关于十进制表达式的程序！输入完表达式之后，按＂＝＂键结束输入！在我们检查的时候，老师说这个程序考虑的很周到，希望会对大家有用！-This is written in assembly language on the procedure decimal expression! End the importation of expression, according to the "=" key input end! We check the time, the teacher said this procedure is very thoughtful consideration, we would hope that useful!

小动画心 动画显示提示信息"按任意键进入"， 然后就没有任何反映了, 不知道该怎么办了?-small animation heart animation shows a message "by Anykey enter," and then there would be no point to the fact that I do not know how the Office

此程序为热水器控制板用,为我公司资深程序员开发.-procedure for water heaters, control panel used in our company for the development of experienced programmers.

中断列表(3) 423K-suspended list (3) 423K

1、用8255的A口驱动六个七段数码管（LED）的字段，C口驱动六位七段数码管（LED）的位控端，右侧两位显示分值，左侧两位显示秒值。 2、段数码管采用动态扫描方式，用8253做定时器（采用查询方式），每位显示的时间50Hz。 3、以5ms为基本时间单位，计数产生秒时间值，秒计数到60时对分计数，分计数到69时对时计数。 -BUFF_KEY EQU 21H BUFF_LED1 EQU 22H BUFF_LED2 EQU 23H BUFF_LED3 EQU 24H BUFF_LED4 EQU 25H BUFF_LED5 EQU 26H BUFF_LED6

汇编语言超浓缩教程-assembly language-enrichment Guide

刮大风歌但范甘迪给对方 但范甘迪分给对方国的国的风格-the wind is strong songs to each other but Van Gundy but Van Gundy distributed to the other side of the United States for the style