在无线通信中使用跳频技术是军事通信中最主要的抗干扰手段之一, 而如果系统中能使用合适的中心频率可以快速跟踪跳频变化的带通滤波器将可以明显改善系统的抗干扰性能。文...

matrix board of dot matrix 8x8

转角线位移式全闭环位置伺服系统及误差分析-Corner line displacement closed loop position servo system and error analysis

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

Project "Control a roboter via WLAN with a GUI and a webcam"

Wavelets have widely been used in many signal and image processing applications. In this paper, a new serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline architecture to compress and decompress images. The real filter calculation over 4 ・ 4 window blocks is done using a tree of carry save adders to ensure the high speed processing required for many applications. The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis reveals that the proposed architecture, implemented using current VLSI technologies, can process a video stream in real time.-Wavelets have been widely used in many sign al and image processing applications. In this p aper. a new serial-parallel architecture for wavele t-based image compression is introduced. It is based on a 4-tap wavelet transform. whic

protel 99设计的一套很好的指导手册,适合初学者的入门和进阶,拿来和大家分享,希望这个东东对你有所帮助.-protel 99 designed a very good guide for beginners and advanced entry, use and sharing of everyone, I hope this Dongdong of your help.

射频识别芯片在汽车智能防盗报警装置中的应用,较之普通的磁卡和ＩＣ 卡，ＲＦＩＤ技术具有使用方便、数据交换速度快、便于维护和使用寿命长等优点。特别是它解决了无源（卡中无电源）和免接触这两大难题。-Radio frequency identification chip in the smart car anti-theft alarm device, compared with ordinary magnetic cards and IC cards, RFID technology has the ease of use, data exchange speed, ease of maintenance and long life etc.. In particular, it has resolved a passive (no power supply card) and free access to these two problems.

zsp400的英文技术手册，内容很详尽-ZSP400 English technical manuals, content is very detailed

操作系统设计说明第三版。英语，经典的操作系统的设计说明书籍-third edition of the operating system design. English, the classic operating system design note books

管理信息系统课程设计 大学工资管理系统设计-Management Information System Course Design Design of the University of Salary Management System