This is a very good key scan circuit and display control programs and

状态1：PC机键盘发送0-9任一个数字，单片机接收发送的数字，并在数码管上显示。 状态2：单片机将接收到的数字回送到PC机，并在屏幕上显示。 -Status 1: PC Keyboard to send any number of 0-9, sending the number of single-chip receivers, and digital tube display. Status 2: Single-chip will receive the figures back to the PC, and displayed on the screen.

该程序主要实现通过74ls164实现串行驱动LED并显示,这种显示方法的LED量度较大-the main procedures adopted 74ls164 Serial LED driver and showed that This method showed a larger measure of LED

基于VRS51L3074的TC35短信息模块驱动程序,程序内有完整的中文字库,支持中英文模式.-SMS-based VRS51L3074 the TC35 module driver program in a complete Chinese font support in English and Chinese patterns.

PIC18与LCD12864的C语言程序，注意修改管脚。-PIC18 and LCD12864 the C language program, pay attention to pin modification.

MSP430系列 RTC源程序下载 使用430实现闹钟程序，可以显示年月日；时分秒，到达闹钟时间蜂鸣器报警。-MSP430 Series RTC source download alarm clock to achieve the use of 430 procedures, can show date when minutes and seconds, time to reach the alarm clock buzzer alarm.

AT24CXX驱动(XX=01,02,04,08,16,32,64)-AT24CXX Driver(XX=01,02,04,08,16,32,64)

关于无线传感器网络安全性问题的研究进展和相关讨论的论文。-On wireless sensor network security research progress and related discussion papers.

走马灯程序 一组IO口8个灯 另外带加速减速功能 初学单片机编写的 硬件测试通过 -Procedures for a group of IO lantern mouth with the other eight lights accelerate the slowdown in the preparation of functional single-chip hardware novice test

大学毕业设计作品：出租车计价器的设计：以AT89S52单片机为中心，通过金属传感器来测距，实现对出租车的计价统计。结合语音芯片ISD4004，时钟芯片DS1302，功放模块LM386N组成语音时间控制系统，最后通过液晶显示模块LCD12864显示单价、路程、总价、时间等。本系统可以实现单价、起步价、白天价、夜间价的显示和时间的修改。AT89S52通过P0口与外部语音报价电路相连，可以实现语音报价功能。-Graduated from college design work: the design of a taxi meter: The AT89S52 microcontroller as the center, ranging through the metal sensor to achieve statistical valuation of the taxi. Combination of voice chip ISD4004, clock chip DS1302, composed of voice amplifier module LM386N-time control system, the final adoption of liquid crystal display module LCD12864 show unit price, distance, total price and time. This system can achieve unit price, starting at daytime price, prices shown at night and the time changes. AT89S52 through the P0 port with an external circuit connected to voice offer, you can offer voice functionality.

sd卡mp3官方pcb文件，protel格式-sd card mp3 official pcb file, protel format