C51下编写的跑马灯程序，可以实现好几种图案的变换。

isd4003的驱动程序,主要用于驱动isd4003的录放,很有用的啊-isd4003 drivers, mainly for the driver isd4003 recorders, very useful ah!

proteus debug for real best

单片机源代码,数字实时钟,C源码,KEIL C开发环境.-Single-chip source code, the number of real-time clock, C source, KEIL C development environment.

数码管显示，并且带有按键功能，按键实现数码管时钟的计时。-take count of clock

This directory contains 3 file system modules: - file system ISO9660 iso9660.c iso9660.h - file system FAT12/16 fat.c fat.h - file system FAT32 fat32.c fat32.h file.c and file.h contains all high levels functions/macro/definition for your application. fs_variable.c contains all definitions of variables that can be shared with the all file systems. config.h must contain the definition of the file system used by your application.- This directory contains 3 file system modules:- file system ISO9660 iso9660.c iso9660.h- file system FAT12/16 fat.c fat.h- file system FAT32 fat32.c fat32.h file.c and file.h contains all high levels functions/macro/definition for your application. fs_variable.c contains all definitions of variables that can be shared with the all file systems. config.h must contain the definition of the file system used by your application.

利用8051单片机驱动蜂鸣器，实现音乐发声功能。-8051 drivers to use buzzers realize music vocal function.

AT89c51 使用 PC键盘 的 C源代码-AT89C51 use PC keyboard C source code

用loop51实现的可调式脉冲发生及检测器，可以手动输入所发生脉冲的频率和占空比，实时检测及动态显示-loop51 achieved with adjustable pulse and the detector, which can occur manually input pulse frequency and duty cycle, real-time detection and dynamic display

单片机用T1中断在IO口P1.0输出乐曲(在P1.0口与VCC间接一喇叭即可听到) 1.由于输出的是方波，比较难听:-)你也可以将波形细分用DA输出正弦波 2.由于T1频繁中断，任何其他中断发生都会是乐曲打顿，只适合试验 3.优化音符编码：一个字节中包含节拍、音符、升降调，可区分数据和命令 -Single-chip microcomputer used in the IO port T1 interrupt output music P1.0 (P1.0 port with VCC in the indirect one can hear the speaker) 1. As the output is a square wave, more bluntly :-) You can also fine-waveform DA output sine wave with sub-2. Due to the frequent interruption of T1, any other interruption occurs Dayton will be playing music, is only suitable for test 3. optimized coding notes: A byte contains rhythms, notes, take-off and landing tune can distinguish between data and command

用单片机实现对温度的测量，并在数码管上显示出来，精度很高-Achieved with single-chip temperature measurement and control in the digital display, high accuracy