基于AT89C52的单片机4X4键盘原理图，可用于小系统板

TIMERDEMO for arm7 ,学习用，认真阅读后再根据自己需要更改！-TIMERDEMO for ARM7, to study, read carefully before According to their own needs change!

这个范例说明如何使用8051 的Port 1连接到四颗七段显示器，PORT 0的低4位分别控制这四颗共阳七段显示器，让四颗共阳七段显示器使用扫描的方式轮流-This example shows how to use the 8051 Port 1 connected to four seven-segment display, PORT 0, low 4, respectively to control the total of four seven-segment display yang, so that a total of four seven-segment display yang way of using the scan rotation

这是本人学习avr的一点成果吧{ 硬件mega8l，8个led共阳极接到PORTD。3位拨码开关接到PINB2,PINB1,PINB0,选择显示内容，PINC4接方向开关，使得正反向摇动都显示正向字，每次显示4个8X8点阵汉字（自己编制的），内附：原理图。实物图片，给有兴趣的朋友-This is my point to learn the outcome of avr bar (hardware mega8l, 8 Ge led a total of anode received PORTD. 3 DIP switches received PINB2, PINB1, PINB0, choose to display the content, PINC4 then switch the direction of making the pros and cons to the rock show that positive words, each show four 8X8 dot matrix characters (self-compiled), the enclosing : Principle diagram. Physical picture, to interested friends

用Keil C51 编写的单片机使用PC键盘程序代码- Compilation monolithic integrated circuit uses the PC keyboard procedure code with Keil the C51

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.

整有效。中间四个字节分别代表设备的地址、指令类型、指令参数1(OPT1)和指令参数2(OPT2)。设备在对这四个字节的内容进行译码后执行相应的操作

c8051F040单片机中菜单显示，键盘输入例程-menu, keyboard input routines

遥控数字钟应用程序，应用于多种数字钟接口，可以遥控设备，省力。自制LED电子钟在很多电子报刊杂志上都可以见到，但大多数在断电后都要重新设置时间等 参数，给使用带来很多不便。也有用后备电池作为备用电源的，但往往体积较大。本文介绍 的LED电子钟克服了以往的弊端，而且采用了家电通用的红外遥控器进行控制，方便使用。 有一路闹铃输出，可以通过遥控器设置闹铃时间及允许与否。-digital clock remote control applications, digital clock used in a variety of interface, remote-control equipment, effort. Homemade LED electronic bell in many electronic newspapers and magazines can all, but most of the power outages after the re setup time and other parameters to use in many ways. Also useful as a standby battery backup power, but often larger. This paper introduces the LED electronic clock to overcome the shortcomings of the past, and the use of common household appliances infrared remote control, and ease of use. A way Alarms output, the remote control can set the alarm time and allow it or not.

自己写的用AVR 单片机产生正弦波.用示波器观察波形很好！-Write your own single-chip generated sine wave with AVR. Oscilloscope to observe waveforms with very good!

单片机下的ADC0809驱动程序-the ADC0809 SCM Driver