本题必须采用广州周立功单片机发展有限公司赞助的ARM2138实验开发仪为主机板；并扩展显示器、键盘、打印机等相应接口；超市的物品使用13位数字编码（每件物品均有...

1） 以单片机为核心部件组成一个音乐播放器。 2） 利用单片机的定时器产生乐谱的各种频率方波，信号经过放大后由喇叭发出声音。 3） 自行定义按键盘，每按一键，可选择一首歌曲进行演奏，某段音乐令单片机连续播放，演奏可通过按键来中断。 4） 在LCD上显示演奏歌曲的名称。 -1) the composition of the core components of SCM as a music player. 2) the use of MCU timer generated scores of the various frequency square wave signal through the amplified sound from the speakers. 3) self-defined keyboard, every click of a button, select a song to play, a certain period of continuous playback of music in SCM, playing by pressing a button to interrupt. 4) In the LCD displays the name of the song playing.

This module provides an interface to an alphanumeric display module. The current version of this driver supports any alphanumeric LCD module based on the:Hitachi HD44780 DOT MATRIX LCD controller.

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

一个基于AT89C51SND1C的硬盘MP3（原理图+源代码+实物照片） -AT89C51SND1C a hard disk-based MP3 (diagram source code-kind photos)

5045的c语言读写程序，经过验证，可以直接使用-5045 of the c language to read and write process, after authentication, direct access to

周立功ZLG7289 驱动原代码 -ZLG7289project16project16project16

msp430 hd44780 it s my code!please read it,thank you!

此程序为单片机编程，主要实现无线收发功能，所使用的无线芯片为PTR4000。-This procedure for single-chip programming, the main function of wireless transceivers used for wireless chips PTR4000.

mm36sb020存储器与单片机连接时的读写程序！里面还包含了与单片机的接口！-mm36sb020 They also include interface with microcontroller!

12864最权威的资料，两个资料一起组成完整资料-12864 most authoritative information, with information on the composition of two incomplete information