51单片机及其C语言程序开发实例第7章节

此为继电器功能测试电路图DDB文件。对应源码为Relay_Function_Tester. keil c51 编写。-This is the relay circuit functional testing DDB file. The corresponding source code for Relay_Function_Tester. Keil c51 prepared.

状态1：正常时，8个LED发光二极管（彩灯）循环点亮。 • 状态2：有报警时，蜂鸣器发出报警声（用P3.3接一个按键，模拟产生报警信号。当开关合上，发生报警；当开关断开，报警停止。用P3.7输出音频信号驱动扬声器，作为报警信号），同时8个LED发光二极管（彩灯）闪烁。 P3.2接一个按键，用于消除报警-Status 1: normal, eight LED light-emitting diodes (lantern) light cycle.

这是一个NOKIA 3310液晶显示屏方面的资料，可供在单片机设计方面的人员参考-This is a NOKIA 3310 LCD screen area, is available in single-chip design reference

这是一个ht1620的资料，希望对你有用-This is a ht1620 information useful to you hope

单片机DA转换源码，在串口调试助手下可以查看发送到串口的转换结果，波特率设置为2400 -Singlechip DA conversion source, in the serial debugging assistant can view the sent to serial conversion results, the baud rate is set to 2400

一维多项式多组求值，利用系数预处理法对多项式p(x)=an-1x^n-1+an-2x^n-2+...+a1x+a0,进行多组求值。其中n=2^k-Many one-dimensional polynomial evaluation group, using coefficient polynomial preconditioning method p (x) = an-1x ^ n-1+ an-2x ^ n-2+...+ a1x+ a0, for many Group evaluated. One of n = 2 ^ k

采用8051单片机驱动四位数码管的定时器系统。采用keil编译-used 8051 four-driven digital control timer system. Compiled using keil

单片机最小系统，两位LED数码管由串口输出接两个164驱动，Lout,Rout为左右声道输出，SET， ALT0， ALT1为三个按键，也可自己在开始的I/O定义改成你想用的I/O口；12M晶振若用89C51则只可装下约14首歌曲，用89C52则可装下近40曲-smallest SCM system, two LED digital serial output from the pipe then two 164-driven, Lout, Rout for about channel output, SET, ALT0, ALT1 to three keys, but also his own in the beginning I/O definition you want to change the I/O port; If using crystal 12M 89C51 can carry only about 14 songs, can be loaded with 89C52 Near 40

QG8_demo学习板开发板例程 ｉ２ｃ的例程，辛苦找来。 经过验证是正确的。-Board development board QG8_demo learning routines i2c routine, it is tough to get a large. Verified to be correct.

时钟芯片将给显示时间，其包括年，月，日，小时，分钟，秒。-Will show the time clock chip, which includes year, month, day, hour, minute, second.