很少见的源码公开的msc51和z80的c编译器。

keil下ISO7816规则的APDU程序-keil rules under ISO7816 procedures Application Protocol Data Unit

详细讲述单片机中SPI接口以及串行接口的原理和编程方法，很有价值-detail microcontroller interface and SPI serial interface and programming method and of great value

C51汇编必做试验7 -- 通过串行口与PC机通信（上位机控制的必备）-C51 compilation of tests must be done 7- through the serial port with the PC, communications (Host Computer Control Essential)

奉献：485 [日期：2005-11-29] 来源：侃单片机 作者：etiller [字体：大 中 小] -Dedication: 485 [Date :2005-11-29] Sources: McCain Singlechip Author: etiller [Font: Xinhuanet]

家电智能控制统一主机 -Intelligent Control of a unified appliance console

实现公历与农历的转换一般采用查表法按日查表是速度最快的方法但51 单片机寻址能力有限不可能采用 按日查表的方法除按日查外我们可以通过按月查表和按年查表的方法再通过适当的计算来确定公历日所对应的 农历日期本文采用的是按年查表法最大限度地减少表格所占的程序空间-Limited can not be used In addition to a daily look-up table method of daily things that we can search through monthly and annual look-up table look-up table method and through the appropriate calculations to determine the calendar day corresponding to the Lunar date of this paper is the annual table look-up table method to minimize the space occupied by program

测试LCM模块AVR应用，ICCAVR编译器编辑。-AVR application testing LCM module, ICCAVR compiler editor.

功能 : 1602字符型液晶显示驱动 开发环境：WinAVR 硬件环境：ATMEGA32/AVR开发板 创建日期：2008-3-27 最后修改：2008-3-27 作 者：bjj9217@163.com-Features: 1602 Character LCD Driver Development Environment: WinAVR hardware environment: ATMEGA32/AVR development board creation date :2008-3-27 last modified :2008-3-27 Author: bjj9217@163.com

93C46读写程序（EE21学习板演示程序） -93C46 literacy program (EE21 learning demo board)

1总线通信协议应用实例 (C51编写的源程序,keil)-a bus communication protocol application examples (C51 prepared by the source, c51)