用C语言在Keil PCF8591数字anaog

双鱼林学生公寓信息管理系统 大家好,我是双鱼林,这是我为大家奉献的asp.net+sqlserver2000的学生公寓信息管理系统-Beas Lin Student Apartment information management system Hello everybody, I am a Pisces forest, this is my dedication to all students in asp.net+ sqlserver2000 Apartment Information Management System

用c++编程 * *** ** *** * ***** *-Programming with c****************

一、 使用键盘显示接口芯片8279接收按键键值，并在七段数码管上显示出来，通过判断键值进入相应音乐播放处理程序。在音乐播放程序中，使用定时器/计数器8253的计数器2，使其工作在方式¬ ¬ 3―方波发生器，通过查表依次取出乐曲频率值送入计数器作为计数初值，经out2输出方波，驱动扬声器发出不同频率的声音，在每个音阶之间加入相应的延迟时间，即实现了音乐的播放。-First, the use of a keyboard display interface chip receive keys keys 8279, and Seven-Segment LED display, through to determine the corresponding music player keys to enter the treatment program. Procedures in the music player, use the timer/counter 2 counter 8253 to work in the way ? ? 3- square-wave generator, followed by out music through the look-up table values into the counter as a frequency count of the initial value, the output side out2 waves, driven loudspeakers of different frequency sound, in between each scale by adding the appropriate delay time, namely, the realization of the music player.

205.asm－－－－－数码管循环显示00～99源程序-205.asm----- digital tube display 00 ~ 99 cycle source

控制道路指示灯的汇编代码-road indicator compiled code

一个汇编程序 不过什么忘了-a compilation procedure but forgot what

进一步实现了VC++实现计算器功能，分为普通型和科学型-Further realization of the VC++ to achieve calculator functions are divided into common type and science-based

在编制键盘输入程序时常常要用到一个键的扫描码或ASC码，如用到 Foxpro 的 inkey() 函数，以及用到 BIOS 的 INT 16H时，但找一个编码表不太容易，有时候找到的编码表又不全，无法查到组合键的编码，本程序就是一个随时用来显示按键的ASC码及扫描码的程序，可以用 16 进制和 10 进制同时显示一个键按下和放开的扫描码，以及ASC码，同样也支持组合键。-Keyboard input in the preparation procedures are often used to a key scan code or ASC code, such as using Foxpro

一个很好的汇编集成开发环境，支持多种汇编编译器。-A good assembly language IDE which support most assemblers.

自己编写的红外解码子程序，但CPU资源占用较高，作教学示范用途。-prepared their infrared decoding routines, but higher occupancy CPU resources for teaching demonstration purposes.