51单片机与USB芯片PDIUSBD12接口固件程序,来源于周立功单片机

用于数控摇杆控制手持式控制器，用89C52单片机作接口

Epson 150II点阵式打印机电路原理图,PCB图,有四个版本,CPU有LPC764,89C51RD2等,有驱动宽度保护功能.-Dot-matrix printer Epson 150II circuit schematics, PCB diagram, there are four versions, CPU has LPC764, 89C51RD2 and so on, have driven the width of protection.

这是一个很好的键扫描电路和显示控制程序

单片机汇编快速入门助手 ，适用单片机初学者使用-MCU Series Quick Start aide, apply SCM beginners

空调控制器中按键功能实现的子程序,包括模式设定,温度湿度设定等.-air conditioning controller button functions of the subroutine, including setting mode, temperature humidity limit.

不开销缓存RAM的430Flash读写程序-Do not spend the 430Flash cache RAM read and write procedures

Michael J. Pont 的嵌入式系统编程讲座2， 8051CPU，keil开发环境。英文的，通俗易懂。-Michael J. Pont Embedded Systems Programming Lecture 2,8051 CPU, keil development environment. English, user-friendly.

本设计主要由数字信号发生器和逻辑分析仪组成，其中数字信号发生器运用了89C51单片机系统，可以重复输出8路循环逻辑移位序列，逻辑分析仪用了89C55单片机系统，可以实现8路信号的采集和显示(时间域和空间域)，3级触发字可调，有多种触发功能，可显示时标线,使逻辑分析仪能从大量的数据流中获得有分析意义的数据。-primarily by the design of digital signal generator and logic analyzer, composed of digital signal generator used 89C51 systems, which can output eight repeat cycle shift logic sequence, logic analyzer with the 89C55 microcontroller system, can achieve a 8-way signal acquisition and display (time Victoria and space domain), three adjustable trigger word, a number of trigger functions, can show that the time scale, so the logic analyzer from the large amounts of data flow has been analyzing the meaning of the data.

开发环境ICC AVR单片机 用ADC做电压表 (多通道)

单片机的c语言的编译软件，最新的keil 2英文版。-keil 3