单片机实验：定时/寄存器8253。原代码，ASM文件。

i2c驱动，可用于驱动具有i2c接口的存储芯片-i2c-driven, can be used to drive with a i2c interface memory chips

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

1602液晶显示的源程序，很是经典，不信你下下看-1602 Liquid Crystal Display

DS18B20 集成温度数字传感器 PDF资料文档-DS18B20 integrated temperature digital sensor information on PDF documents

atmega32 和RS485的通讯，已经在电路板上测试通过，RS232相对简单一点，RS485需要对控制收发信号处理一下，并且需要RS232转RS485工具来验证收发是否正确-atmega32 and RS485 communication, has been tested in the circuit board, RS232 relatively simple point, RS485 transceiver control signals need to deal with you, and will need RS232 to RS485 transceiver tools to verify the correctness of

MSP430 F149的单片机 AD转换 便于相应计时器的操作-MSP430 F149 microcontroller AD converter to facilitate the operation of the corresponding timer

这是对TI公司TMS320DM642的中文翻译-This is a TI company TMS320DM642 Chinese translation

PC数字电压表的设计,原理图以及代码,设计文档.此数字电压表的优势在于可以通过串口将测量所得到的电压值传给PC机,这样的话有利用整个数据的采集与分析.上位机采取的是串口通信软件.-PC digital voltage meter design, diagram and code, Design Documentation. This figure voltage meter advantage is through the serial port will be measured by the voltage transmission PC, so is the use of the entire data collection and analysis. PC"s serial port communication software.

51单片机实现红外键盘的解码，C51语言，Keil编译。32位红外信息。-51 single-chip implementation of the decoding infrared keyboard, C51 language, Keil compiler. 32 infrared information.