关干高速PCB设计的设计技巧，PCB硬件开发指南。

本程序代码质量较高，包含内容说明上传资料的详细功能等。-The program code of higher quality, containing detailed information on the contents of the instructions to upload functions.

51单片机定时器计算工具，对于经常使用定时器的编程者很有用的-51 Single-chip timer calculation tool, often used for programmers timer useful

在单片机编程中位图及字库点阵提取程序源代码- The position chart and the fonts lattice withdraw the procedure source code in the monolithic integrated circuit programming

单片机键盘阵列扫描源程序解析，让你更好的理解按键扫描的原理-Single-chip arrays to scan the source code to resolve the keyboard, allows you to better understand the key principle of scanning

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

126*64或192*64LCD驱动程序包，控制芯片HD61202-126* 64 or 192* 64LCD driver package, control chip HD61202

使用msp430f5438UART的IRDA编码解码功能实现红外收发-msp430f5438 IRDA

单片机应用技术选编2,有大量关于51、avr、pic等多种单片机实例。-Selected 2 single-chip applications, a large number of on 51, avr, pic, etc. Examples of a variety of single-chip microcomputer.

KeilC开发,51通过8255对外部4*4键盘进行控制.按键分别为0-9以及上下左右,加上确认取消.-KeilC development through 8255 to 51 4* 4 external keyboard control. Keys were 0-9 and above and below, coupled with canceled.

大家一起分享,一起努力，互相学习，共同进步-thank you