KeyDown_tester

C51单片机8位LED左移显示变化数字实验例程(C51 single-chip 8-bit LED digital test routines left show changes)

基于单片机的点阵屏，595 Z字移位，1/4扫描。(Microcontroller-based dot-matrix screen, 595 Z character displacement, 1/4 scan.)

用于全桥逆变电路的移相软启控制程序，周期和启动时间均可调节。(Phase-shifting soft-start control program for full-bridge inverters has adjustable cycle and start-up time.)

In this paper we uate the performance of cooperative spectrum sensing (CSS) where each cognitive radio (CR) employs an improved energy detector (IED) with multiple antennas and uses selection combining (SC) for detecting the primary user (PU) in noisy and faded sensing (S) channels. We derive an expression for the probability of false alarm and expressions for probability of missed detection in non-faded (AWGN) and Rayleigh faded sensing environments in terms of cumulative distribution function (CDF). Each CR transmits its decision about PU via noisy and faded reporting (R) channel to fusion center (FC).

说明：  STC89C52RC 单片机开发板慧净HL-1 115个例程(Stc89c52rc MCU development board Huijing HL-1 115 routines)

使用单片机对灯泡进行控制，制做做出跑马灯的效果，简单加深对定时器的理解和蜂鸣器的应用，更深入的理解51的内部结构和使用方式。学会用单片机控制灯。(The use of single-chip microcontroller to control the light bulb, make a running horse lamp effect, simple deepen the understanding of timer and buzzer application, more in-depth understanding of the internal structure and use of 51. Learn to control the lamp with single chip computer.)

单片机89C52控制点阵二极管，汇编语言编写(89C52 single-chip dot matrix control diodes, compiled languages)

28335 ENC28J60驱动底层程序，ping通，没有附带协议部分(28335 ENC28J60 driver underlying program, ping-pass, no part of the agreement with)

说明：  通过不同的手势控制小车运动，实现小车的前进、后退、转弯等功能。(Through different gestures to control the movement of the car, the car can move forward, backward and turn.)

这是我看了《十天学会单片机》（郭天祥的教程）第十课时写的，综合了矩阵键盘，串口通信，数码管 动态显示，定时器中断的简单时钟程序。用51电子网买的298元80C51单片机学习板 （http://www.51dz.com/n.asp?id=12519&i=xie343706382）测试时请将p1口用排线连到CZ2上，控制8位 数码管用。P0口用来检测矩阵键盘的，P3.0和P3.1是串口通信用，控制74H164N芯片段选8位数码管。 数码管显示内容为时分秒个两位，按下K16为设置按钮，按一下调节秒数，再按一下调节分钟，再按一 下调节小时。再按下退出，走时。调节时按K1至K10分别代表0到9。 我的QQ343706382，希望有喜欢单片机的朋友。和我联系。(This is what I read "10 days Singlechip Society" (郭天祥tutorials) written by the tenth class, integrated matrix keyboard, serial communications, digital tube dynamic display, a simple clock timer interrupt procedures. Electronic network with 51 of 298 yuan to buy 80C51 single-chip learning board (http://www.51dz.com/n.asp?id=12519)