matter for the control coupled with the process, if the error is found, immediat...

2001年全国大学生电子设计竞赛“索尼杯”得主――调频收音机 本调频收音机主要由索尼公司的FM/AM收音机芯片CXA1019、ROHM公司的PLL频率合成器BU2614(本刊网站上提供了该芯片的资料)和单片机组成。系统以单片机AT89C51为控制核心,实现全频搜索、指定频率范围搜索和手动搜索 数控电位器(X9511)的引入使得音量连续调节而无滑动噪声 液晶显示器显示载频和时钟等信息 采用DC-DC电压转换器使整机在3V电源下稳定工作 为了实现电台存储功能,采用E~2ROM(AT24C04),既不怕掉电,又可存储多个电台 在此基础上,还增加了立体声解码,使声音更动听、逼真。 方案论证与比较 1.调谐方式的选择与论证 方案一 采用LC调谐法,在本振回路中通过机械调整谐振电路的电容值来改变本振频率,从而达到调谐的目的。这种调谐方式电路简单,但频率的稳定性差,且不利于使用单片机进行智能控制。

串口通讯经典使用程序4,以前收集整理的东东,希望对大家有用!-Serial Communication Classic to use the program 4, previously collected Dongdong finishing the hope for all of us!

Microchip Technology Inc. The crypt key, serial number and configuration data are stored in an EEPROM array which is not accessible via any external connection. The EEPROM data is pro-grammable but read-protected.

奉上刚做好的测温小制作--基于DS18B20传感器 今个学期刚学了单片机，学期末的时候老师要求每个人都做个有关单片机应用的小制作，而我的作品就是这个。DS18B20挺好用的，功能很强（我用到的只是最简单的）。可惜现在没时间（要考试！），等下吧，考完后我再努力将这个小制作的功能加强，特别是想做到能自动识别传感器ID号的功能。 我知道有很多人都对DS18B20很感兴趣，借此奉上源代码，实物我已经做好了，测温很稳定。希望对大家有帮助。-Thermometry of small production-- DS18B20 sensor based on this semester just learning the microcontroller, the end of the teacher asked each one of the SCM application to be a small production, and I was in the works. DS18B20 very good use, and highly functional (I use only the most simple). Unfortunately, there is no time (to test!) , And so are you, I again after taking the efforts of the small production of functional strengthened, in particular to achieve recognition sensor can automatically ID function. I know that many people are very interested in right DS18B20 to enclose the source code, in-kind I have done well, very stable temperature measurement. We want to help.

20ma的电流环通信回路仍应用于一些远程通信的场合，本文为其实现过程。-20ma current loop

Tea5767的3线控制程序，M8单片机，采用3线控制，内有电路原理图，可手动指定频率，也可以上下搜索-TEA5767 the 3-wire control procedures, M8 MCU, using 3-wire control with a circuit schematic can be manually specified frequency, can also be upper and lower search

在8X8　LED点阵上显示柱形，让其先从左到右平滑移动三次，其次从右到左平滑移动三次，再次从上到下平滑移动三次，最后从下到上平滑移动三次，如此循环下去。 -In the 8X8 LED dot matrix display cylindrical, smooth movement from left to right to first three times, followed by a smooth move from right to left three times, once again moving smoothly from top to bottom three times, the last from the bottom-up smoothing mobile three times, so the cycle continue.

8051f02x系列单片机的定时器的应用例程-8051f02x Series MCU application timer routines

AD9851子程序,实现快速频率变换和波形输出-Subroutine AD9851 achieve rapid frequency conversion and waveform output

数控调频发射器，很好用的哦，我写了好久的，不过大家要先有必要的电子元件哦。-NC FM transmitter, used in good Oh, I wrote a long time, but everyone should have the necessary electronic components Oh.