C51单片机和数码管显示的红外遥控读码器

本代码实现了卡式电话的功能,包括长话市话特话,警告,扣费等一系列功能-This code implements the cassette phone features, including special long-distance local call, then, warnings, chargeback and a series of functions

1.电子琴功能 用实验板上K1~K7作为电子琴的7个按键，每个按键对应一个音符要求当按下其中一个按键，就通过P2.5口输出对应频率信号使蜂鸣器发出特定音符声音。 2.乐曲演奏 若按下K8键，完成自动弹奏“送别”歌曲。 -1. Organ function of the experimental board K1 ~ K7 as the organ of the seven buttons, each button corresponds to a note of which require that when the press of a button, on the adoption of P2.5 port output frequency signal corresponding to a specific note to the buzzer sounds . 2. Music playing, if pressed K8 button to complete the auto-play " Farewell" songs.

这是微软的一个USB同步传输例程，虽然它是基于Intel USB开发板的，但是也很值得我们好好的研究。-This is a USB synchronization routines, although it is based on the Intel USB development board, but also worthy of our good look.

PC机与单片机的双向通信查询控制方式， 用C语言写成。-PC and MCU query bi-directional communication controlling method, using C language.

工程师在用Keil开发程序时，在代码性能要求较高的场合，需要对代码段的执行时间作统计。比如在做LED显示屏软件扫描程序，或一些定时采集数据程序，如果在软件仿真的时候就能够清晰知道代码段的运行时间，那就可以对程序进行优化，或者插入汇编代码(asm)达到最高运行速度。 关键字:Keil DLL C语言 ASM 汇编-engineers in the development process with Keil, the code performance requirements higher occasions, need to block the execution time statistics. For example, in the software do LED scanning procedures, or some regular data collection procedures, If the software simulation time can understand clearly code of the running time, it can process optimization, or insert code compilation (asm2) to achieve maximum speed. Keywords : Keil DLL C language compilation ASM

44780字符液晶屏驱动演示程序总线方式-44,780 Character LCD Driver Bus Demonstration Program

适合51,AVR,ARM单片机使用的PS2键盘源代码。欢迎下载，有问题可发联系我。-Suitable for 51, AVR, ARM Singlechip PS2 keyboard use the source code. Welcome to download, there are problems I can send links.

这是一个基于STC89C58开发的用于51上的拼音输入法示例KEIL工程，程序很好用，已经测试通过并已应用于实际当中-This is a development based on STC89C58 for 51 on the sample KEIL Pinyin input method works very well with the procedure has been tested and has been used in practice

版本：1.0 Target：89S51 程序描述：这个程序利用89X51连接绘图型LCD，然后显示出：-Version : 1.0 Target : devised procedures Description : The program uses 89 X51 graphics link-LCD, then showed :

自制的串口控制8路光藕隔离输出，可以通过计算机串口控制，8路输出-homemade serial control a variety of eight-channel optical output isolation can be controlled via computer serial port, eight output