max232

本论文设计了由AT89C52单片机为控制核心,用红外线为监测装置的防盗报警系统。该系统中红外对管作为红外线的发射和接收部分。发射部分采用红外发光二极管，而使用光敏三极管作为接收部分，接收红外发光二极管发出的红外线（不可见光）。单片机将通过内部的软件系统检测到接收管的导通或截止状态,并根据检测到的信号状态,进行判断并输出报警信号, 直至按复位按钮或电源开关。声光报警信号由9014三极管驱动构成声光报警电路,进行声光同时报警。电源部分采用变压器将220V交流市经变压器降压，桥式整流器整流，电解电容滤波，三端稳压管78L05稳压，最后得到整机要求的+5V稳定直流电源。实验表明，本系统成功运行。(This thesis is designed by AT89C52 microcontroller as the control center for monitoring device with infrared burglar alarm system. The system of infrared tube as infrared transmitting and receiving section. Emitting portion using infrared light emitting diode, a phototransistor as a receiving portion to receive the infrared ray emitted from the infrared light emitting diodes (not visible). The microcontroller will be detected by the internal software system to the turned on or off state of the receiver tube, and according to the detected signal state, to determine and output an alarm signal until a reset button or the power switch. Audible and visual alarm signal by 9014 transistor drive constitute sound and light alarm circuit, sound and light alarm at the same time. The power part of the transformer 220V AC City by the step-down transformer, bridge rectifier rectifier, electrolytic capacitor filter, three-terminal regulator 78L05 regulator, and finally get the machine requirements+5V)

说明：  ssd1963的STM32库函数，能驱动ssd1963芯片进行显示(STM32 library function of ssd1963 can drive ssd1963 chip to display)

LPC1768 ADC 用keil打开 实现AD采样 容易移植( LPC1768 ADC opened with keil)

高频电子线路AM和FM波形演示软件,发明实验时候了解AM和FM知识(AM and FM frequency electronic circuit waveform presentation software, to understand the invention, when AM and FM experimental knowledge)

Altium designer10的常用元器件封装库(footprint for ad10)

3389连接3389 connector 3389 connector 3389 connector (3389 connection)

利用单片机MSP430f149单片机实现的 实验十二 SPI接口扩展RF通信(The use of single-chip MCU MSP430f149 Experiment 12 SPI interface extensions RF communications)

本实验,STM32通过串口1和上位机对话，STM32在收到上位机发过来的字符串(以回车换 行结束)后，原原本本的返回给上位机。下载后，DS0闪烁，提示程序在运行，同时每隔一定时间，通过串口1输出一段信息到电脑。(In this experiment, STM32 through the serial port 1 and host computer dialogue, STM32 received the host computer sent to the string (in return for After the end of the line), return to the host computer. After downloading, the DS0 flashes, prompting the program to run while each A certain time, through the serial port 1 output a piece of information to the computer.)

Simple example........

lexical analysis of text detail program...