通过单片机对HT9200进行控制访问，实现电话的DTMF拨号功能

DESCRIPTION =========== This example project shows how to use the IAR Embedded Workbench for ARM to develop code for the Atmel AT91SAM9261 evaluation boards. It shows basic use of parallel I/O, timer and the interrupt controller. It starts by showing different patterns on the LED s separated by half second. COMPATIBILITY ============= The project is compatible with the AT91SAM9261-EK board.

一个只有1台计算主机的智能安防报警系统,大规模系统的工作原理是一样的,自己扩展就可以了-Only 1 of a host of intelligent computing security alarm system, large-scale system, the working principle is the same, their expansion can be a

无线传感器网络底层驱动程序，针对msp430单片机。-Wireless sensor networks underlying driver for the msp430 single chip.

8051编译器 dos下 很小-8051 compiler under small dos

键盘与显示 4*4键盘 8个数码管轮流扫描作动态显示 硬件电路需要74LS138 cd451 -Keyboard and display 4* 4 keyboard 8 digital tube rotation scanning circuit for dynamic display hardware need 74LS138 cd451

12位LED的万年历.有源程序和HEX,还有原理图电子时钟日历LED程序-12 LED

NEC 3.5 lcd 驱动原理图-NEC 3.5 lcd driver schematic

本程序是在c51的环境下CRC算法的几种方法。希望大家有参考作用。-the procedure was c51 environment CRC algorithm methods. We hope that as a useful reference.

内含红外遥控 液晶显示1621 IO口测温-Infrared Remote Control LCD containing 1621 IO port temperature

本软件是单片机通讯的主程序，通过串口传送数据。-This software is the main single-chip communications, through the serial transmission of data.