MCS51外部中断1和定时器T0的应用，外部中断1连接一个按键，通过调节按键改变定时器的值，定时器输出连接一个蜂鸣器...

用12C887制作的电子时钟,用89C51单片机读取并显示.-12C887 produced with electronic clock 89C51 single-chip reader and displayed.

51单片机的实用子程序，包括片内及片外ram初始化，滤波程序，多字节算术运算程序，排序程序，以及51定点运算子程序库，浮点运算子程序库等等。-51 SCM utility subroutine, including the chip and chip ram initialization, filtering procedures, procedures for multi-byte arithmetic operations, sorting procedures, and 51 fixed-point computation subroutine library, subroutine library floating-point operations and so on.

Hk2000c传感器驱动程序，我们卖传感器公司给带的，正确性可以保证-Hk2000c sensor driver, and we sell companies to the zone sensor, can guarantee the correctness of

16进制to10进制输出子程序:显示数据，起始位，结束位，有无小数点-16 to10 band-band output subroutine : display data, the starting place, at the end, there decimal point

ad 转换　５１编程事例　值得学习以下对出学者有用 -ad converter 51 programming examples worth learning from the scholars of the following useful

通过环路串口判断串行通信电平转换芯片功能是否正常，并通过读写DRAM 判断硬件。-Through the loop to determine serial communication serial port level translator chip features and whether it is normal, and through reading and writing DRAM hardware judge.

基于51单片机的 c语言 数字脉搏计的设计-C language based on single chip design of digital pulse meter

收集到的一些常用功能模块，有温度传感、星期计算、一按键都能等-Collected some frequently used function modules have temperature sensing, weeks, and so one button can

基于等精度测频原理，设计的等精度频率计，测试结果很精确，达到0.01HZ。-Such as the accuracy of frequency measurement based on the principle of design, such as precision frequency meter, test results are accurate to 0.01HZ.

PIC单片机的定时器使用的demo程序.内附说明.-PIC MCU timer used demo program. Containing a note.