Entropy

目的是让大家熟悉输入、输出端口的使用 该程序的功能是把演示板当做一个按键计数器-purpose is to let people familiar with the input, output ports using the procedures of the functional demonstration board is a key counter as

asm sf

DS1620/8051显示器

helios语音芯片的录音放音源程序。自动分段录音，可擦除。其音频数据存储采用SPI FLASH存储芯片-helios voice chip recording audio source. Sub automatic recording can be erased. Audio Data Storage their use SPI Flash Memory Chip

天行健，君子以自强不息  请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

说明：  对于初学者来说，一款强大的汇编语言很重要，如何学习这些汇编语言，需要花些时间来锻炼自己(For beginners, a powerful assembly language is very important. How to learn these assembly languages needs to take some time to exercise themselves)

用89C51，外接晶振，复位电路，二个数码管，二个按键，做一个电子秒表，具体要求为用按键起停电子表，可用按键设计倒计时时间(如10S，20S，60S),并启动倒计时功能,能用按键选择以上两功能之一-With 89C51, an external crystal oscillator, reset circuit, two digital tube, two buttons, making an electronic stopwatch, and specific requirements for the use button start-stop electronic watches, key design can be used countdown time (such as 10S, 20S, 60S), and start the countdown function, can be used for more than two buttons select one of the functions

电动广告灯箱控制器程序，实现定时打开，可设置画面停留时间，等功能。-Electric advertising light box controller procedures, timing realize open, the screen can be set up residence time, and other functions.

一个用汇编语言编写的矩阵转置程序-an assembler language matrix transpose procedures

1) 东西方向车辆放行20秒钟。即东西方向的绿灯和南北方向的红灯同时点亮20秒钟； 2) 20秒钟后，东西方向的黄灯闪烁2秒钟，以警示车辆将切换红绿灯。此时南北方向仍维持红灯点亮。在南北方向亮红灯期间，在2位数码管上显示计数值（每秒减1），从20减至01。 3) 东西方向的黄灯闪烁2秒钟后，转为南北方向放行20秒钟。即东西方向的红灯和南北方向的绿灯同时点亮20秒钟； 4) 南北方向放行20秒钟后，转为南北方向的黄灯闪烁2秒钟，以警示将切换红绿灯。此时东西方向仍维持红灯点亮。 5) 南北方向的黄灯闪烁2秒钟后，再转为东西方向车辆放行20秒钟。如此循环重复。 -1) direction vehicle release 20 seconds. What is the direction of red and green light at 20 seconds, 2) 20 seconds later, the yellow lights flashing warning vehicles with 2 seconds, switch to the traffic lights. This is still remain red light north-south direction. In the south during the red light, in the direction of the digital display tube of 2 per plan (minus 1), from 20 to 2001. 3) the yellow lights flashing direction to 2 seconds later, the south direction release 20 seconds. What is the direction of the north-south direction of red and green and light 20 seconds, 4) north-south direction after 20 seconds to release the north-south direction, yellow lights flashing warning, with 2 secon