51单片机直接驱动液晶显示，里面有两个程序！

简易电子琴的设计 一、 设计题目： 设计一简易电子琴，要求能够发出1、2、3、4、5、6、7等七个音符。 使用元件：AT89C51、LM324，喇叭，按键等 二、 设计目的 （1）能够对电子电路、电子元器件、印制电路板等方面的知识有进一步的认识，独立对其进行测试与检查。 （2）熟悉8051单片机的内部结构和功能，合理使用其内部寄存器，能够完成相关软件编程设计工作。 （3）为实现预期功能，能够对系统进行快速的调试，并能够对出现的功能故障进行分析，及时修改相关软硬件。 （4）对软件编程、排错调试、焊接技术、相关仪器设备的使用技能等方面得到较全面的锻炼和提高。-simple design of a flower, a design : a simple flower design, request, sent seven notes. Use Element : AT89C51, LM324, speakers, such as two keys, designed (a) to be able to electronic circuits, electronic components, such as printed circuit boards with the knowledge to further understanding of its independent testing and inspection. (2) familiar with the 8051"s internal structure and function and the rational use of its internal registers can be completed software programming design work. (3) To achieve the desired functionality, the system can quickly debugging, and the right to function failure analysis, the timely revision of the related hardware and software. (4) The right software programming, debugg

使用结构体形式编写的串行通信的例程，供需要的人参考-Using the structure prepared in the form of serial communication routines for those who need it for reference

avr32硬件逻辑图，有助于开发AVR32 Studio的同志们-avr32 hardware logic diagrams, help develop comrades AVR32 Studio

基于AT89C2051单片机的数字电容表设计。里面有源代码、protues仿真图-AT89C2051 MCU-based design of digital capacitance. Inside the source code, protues simulation map

利用HD66421实现灰度字符显示，keilC51编译环境-HD66421 realize the use of gray-scale character show, keilC51 compiler environment

PIC单片机4*4键盘扫描C语言程序-PIC single-chip 4* 4 keyboard scan C language program

在Codevision环境下，用AVR 用TC/0设计的时钟，并用6位数码管显示-Environment in Codevision with AVR by TC/0 design of the clock, and six digital display

LPC单片机读写EEPROM程序-LPC SCM reader EEPROM process

本文件代码的开发环境是keil C，芯片是AT89S52，这是一个如何使用DS18B20温度传感器的例子，从中可以学习如何利用I2C以DS18B20通信。-This document is a code development environment keil C, chip AT89S52, this is a how to use the example of DS18B20 temperature sensor, which can learn how to use I2C to DS18B20 communications.