Cml860 for DTMF and FSK transceiver chip signal

Fairchild公司的二极管，三极管原理图库(protel)-sch.lib about Fairchild s Semiconductor(TTL)

opentcp-8052-1-0-4-1-src,包含了常用的网络协议，已经成功的移植到51中-opentcp- 8052-1-0-4- 1-src, contains commonly used network protocol, already successful transplant 51

步进电机控制程序，已测，绝对好用！大家来下载-Stepper motor control procedures have been measured, the absolute ease of use! U.S. to download

JUPITER演示程序，SIO-test-JUPITER demo, SIO-test

51单片机模拟解码2272程序，此方法较硬件解码要方便而且灵活性要强，可靠性也得到加强。-51 2272 microcontroller decoding process simulation, this method than hardware decoding to facilitate flexibility and stronger, Reliability has also been strengthened.

单片机串口通信程序集，51单片机串口调试程序一例-Microcontroller serial communication assembly, 51 MCU serial debugger one cases

用8051单片机控制的8个LED等的跑马功能，具有花样变化，暂停和变速功能-By 8051 the control of eight LED functions such as horse racing, with pattern changes, suspension and transmission functions

一个很好用的密码锁程序，MCU用的是EM78P447，经试用非常可靠，提供给想学习EMC的用户使用，如有需要原理图的请发邮件到micheal23@sohu.com,注：需注明LOCK原理图-good with a password lock procedures, the MCU is EM78P447, tested very reliable, available to want to learn EMC users, if necessary schematic please send mail to micheal23@sohu.com, Note : LOCK be annotated diagram

通信方式是485方式。通过485来控制一组灯的开关。-485 are way communication. Through 485 to control a group of light switches.

单片机系统上电后，P0 口和 P1 口都被清 0。然后，你规定一个由 6 个数字构成的序列（每个数字从 0～F 中选取），比如 E、8、9、0、7、F。然后每次当单片机检测到外部中断 0发起中断时间时，读取 P0 口和 P1 口上的状态值，当连续 6 次外部中断事件的对应的数字序列构成你所设定的序列后（举例来说，如果 P0.0 是 1，P0 和 P1 的其他管脚是 0，那么我们称为检测到一次数字 0），从串口打印输出一幅类似下图的 16×16 的ASCII码的圣诞树图片。-Single-chip microcomputer system after power, P0 and P1 mouth I have been ching 0. Then you set a six figure constituted by the sequence (each number from 0 ~ F in selected), for example, E, 8,9,0,7, F. And then each time a single-chip detects external interrupt 0 initiated interruption time, I read the P0 and P1 mouth on the state value, when a row 6 times the corresponding external interrupt events constitute digital sequence set your sequence (for example example, if P0.0 is 1, P0 and P1 of the other pin is 0, then we called a number of detected 0), a printout from the serial port under similar 16 × 16 map of the ASCII code of the Christmas tree图片.