80C52参考频率计程序，包含中断和定时器典型应用代码段

CH451的LED驱动及8*8键盘驱动程序 CH451的LED驱动及8*8键盘驱动程序 -CH451 the LED driver and 8* 8 keyboard driver for the LED driver CH451 and 8* 8 keyboard driver

ma12864的开发程序能够很好的使用，您可以试试看，如果可以的，就-ma12864 the development of procedures to good use, you can give it a try, if possible, on the

基于keilc软件的lcd显示（包括按键扫描）-du to keilc software

单片机 Keil＋proteus 并行口设计数字键盘实验 要求：掌握动态显示、动态扫描键盘的工作原理及硬、软件的设计、调试方法 掌握80C51接口硬件电路设计方法及软件编程方法 了解80C51外部中断的使用和编程方法 实验题目：并行口实现数字0~9、A~F、L、U、P、n总共20个键盘，将按键的结果用7段数码管显示出来。-Parallel Port numeric keypad test requirements: master the dynamic display, dynamic scan the keyboard works and the hardware and software design, debugging the means to acquire 80C51 interface hardware circuit design methods and software programming approach to understanding the 80C51 external interrupts use and programming methods Experimental subjects: parallel port for digital 0 ~ 9, A ~ F, L, U, P, n total of 20 keyboard, the result will be keys to use 7-segment digital tube display.

USB驱动--MSP430单片机 已经通过验证-USB drive- MSP430 single chip microcomputer has been validated

Keil C做的8个LED灯循环左移右移-Keil C do eight LED lights cycle bits shifted to the right

ds1302 汇编源代码，单片机用的是89c51调试好使-DS1302 compilation of source code, using the 89C51 single-chip debugging so

c8051fxxx单片机所有外设C例程，希望对大家有用。-c8051fxxx Microcontroller C routines for all peripherals and hope for all of us.

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct

使用8051弹片机做的步进电机程序,运用了中断等.-stepping motor program , used 8051 mcu and interrupt