A small keyboard program, there are nine buttons, through the 422 control other...

端口控制发光二极管亮灭。 【硬件连接】通过SPCE061A的1位I/O端口（本例中使用IOA15端口），经一限流电阻后接一个发光二极管至地-Port control to eliminate bright light-emitting diodes. [] Through SPCE061A hardware connection of an I/O port (in this example, the use of IOA15 port), with a current limiting resistor followed by a light-emitting diodes to land

RS485通信程序，采用ModBus协议，注解详细，学习ModBus的好文档-RS485 communication program using ModBus protocol, detailed notes, good documentation of the study ModBus

本程序压缩和解压缩WAV16BIT ADPCM 文件 原程序,可以移到任何硬件平台 使用 本程序在PC和32位单片机系统运行良好 -the compression and decompression procedures WAV16BIT ADPCM original document procedures can be moved to any hardware platform and the use of the procedures in the PC and 32-bit microcontroller system operated we

少见的12864万年历，功能齐全12864+万年历,非常适合单片机开发的人用-Perpetual Calendar 12864 rare, full-featured 12864+ Calendar, very suitable for development with single-chip microcomputer

8051系列教程多功能程式范例 -8051 Series multi-function program examples tutorials

利用程序中的函数，来读取时钟芯片的秒、分、时、日、月、年、世纪，亦能对其设置时间日期。-procedures for the use of function, to read clock chip seconds, hours, days, months, years, centuries, but also the date of its set-up time.

AD转换器MAX127驱动程序（ KEIL C51 ）-AD converters MAX127 driver (KEIL C51)

（个人原创）这个是我在Keil下写的MAX5532--MAX5535通用的驱动代码，由于我编写的时候，考虑到通用性，所以当你使用的时候，需要根据你的器件特性几乎不用修改函数提来调用我的函数模块（我在需要调用的注释和注意点已经写的很清楚了），缩短你的工程开发周期。-(Personal original) This is what I wrote in under Keil GM MAX5532 MAX5535 driver code, as I am prepared when taking into account the general, so when you use when you need to almost do not modify the device characteristics mentioned function to call I have a function module (I need to call attention to the comments and points have been written very clearly), and shorten your project development cycle.

利用NXP的新一代高集成度的芯片RC500完成Mifare系列卡的读写-The use of a new generation of highly integrated NXP" s Mifare chip RC500 Series completion card reader

Ps2键盘驱动程序，用C51单片机驱动PS2键盘接口