查询词典 digital computer

The base of computer culture, c programmer, fundamentals of analog electronic circuits, fundamentals of digital electronic circuits, data structure, principles of computer composition, operating system, discrete mathematics, computer network, principles of microcomputer, 8086/8088 macro assembler language; multimedia technology; the principles of database; oopl( errorobject oriented programming language); fundamentals of compiling; software engineering; numerical computational method; mcs51/96 principle of single-chip computer; artificial intelligence; computer system organization; digital interface and digital circuits; java programming language; data structure; operating system; computer network; technology of electronics, etc.

计算机文化基础、c语言程序设计、模拟电路基础、数字逻辑电路基础、数据结构、计算机组成原理、操作系统、离散数学、计算机网络、微型计算机原理、8086/8088宏汇编语言程序设计、多媒体技术、数据库原理。面向对象语言程序设计，编译原理，软件工程基础，数值计算方法、mcs51/96系列单片机原理与应用、人工智能、计算机系统结构、数子接口技术与电路、数据库设计基础 java语言，数据结构，操作系统，计算机网络，电子技术等。还有一些选修的课比如：tcp/ip网络协议分析基础、oracl数据库原理，db2数据库原理等。

along with the development of digital technology,digital filters are widely used in many fields,this paper introduces how to design a iir digital notch filters in matlab environment.the design of digital notch filters can be achieved through three steps:firstly,the design of analog lowpass filter; secondly,it is analog lowpass to analog band stop filter conversion;at last,using the bilinear transformation make the analog notch filters change into digital notch filters.the paper also introduces how to design the transfer function of the digital notch filters using all the zeros and farthest points at the same time,it also introduces the program of the digital notch filters under butterworth analog lowpass prototype.

摘 要：随着数字技术的发展，数字滤波器在许多领域得到广泛的应用。研究一种在matlab语言环境下设计iir数字陷波滤波器的方法，在数字陷波滤波器设计过程中，先进行模拟低通滤波器的设计，然后进行模拟低通/模拟带阻滤波器转换，最后采用双线性变化法将模拟陷波滤波器转化成数字陷波滤波器。提出一种用所有零点和极点来表达数字陷波器传递函数的方法，同时给出以巴特沃斯模拟低通为原型设计数字陷波滤波器的程序。关键词：无限冲激响应；巴特沃斯滤波器；数字陷波滤波器；matlab；双线性变换

Concept; In 1989 GRiD Corporation promoted first section to havetouches the type screen then to take along the computer; In 1992,Microsoft has promoted "Windows for Pen", after but two years sufferthe elimination; In 1996 Palm developed the first section successapplication to touch the pen type computer; In 1997 Oracle joinedMicrosoft the ranks to start to study the dull technology; 2000 is oneof plate computer important turning points, Bill Gates starts by 2000,continuously at in two session of Comdex congress speech vigorouslyinitiates the plate computer; In 2002, in plate computer history amost important year, also is a year which most bustles about,This year in May, Gates brings 150 plates computers to attend theMicrosoft year CEO summit, meets in August, plate computer software isbeing open to the computer manufacturer, follows closely in November,the plate computer officially is going on the market, seven bigcomputers manufacturers develop this new product, in December theplate computer Chinese edition goes on the market.

概念；1989年GRiD公司推出第一款带有触摸式屏幕的便携电脑；1992年，微软推出了"Windows for Pen"，但两年后遭淘汰；1996年Palm研制出第一款成功应用的触笔式电脑；1997年Oracle加入微软的行列开始研究平板技术；2000年是平板电脑的重要转折点之一，比尔盖茨由2000年开始，连续两届Comdex大会上的讲话中大力倡导平板电脑；2002年，平板电脑发展史上最重要的一年，也是最忙碌的一年，该年5月，盖茨带着150台平板电脑参加微软年度CEO峰会，接着8月份，平板电脑软件向电脑制造商开放，紧接着在11月份，平板电脑正式上市，七大电脑制造商开发这一新产品，12月平板电脑中文版上市。

Equipment: 2 meters in diameter has a film blowing machine Units 1, 1 m film blowing machine 2 Units, 800-type film blowing machine 2 Units, 600 Units 5 film blowing machine, film blowing machine 400 Units 8, self-styled pocket machine 2 Units , bubble machine BAG 3 Units, 1000-type computer high-speed 8-color printing press 1, 800 computer-based 6-color press 2 Units, 600 computer-based 6-color press 2 Units, 600 2-color presses 5 Units, 600 single - Units 6 color printing press, 800-type compound machine 2 Units, 600-type compound machine 2 Units, 600 Units 2 computer triangular closure .600 PC .600 scalding machine 10 Units self-sealing machine hot computer 2 Units, 600-type computer hot bubble bag machine 3 Units, 1000 Units 1 computer perm machine perm machine .800 PC .600 Units 1 type bag machine automatic hot computer 3 Units, 3 Units polypropylene film blowing machine, poly bag machine hot 20 Units, contraction Film Blown Machine 2 Units, hot shrink film machine 12 Units, demolition machine, in closing down the machines, machine, granulating machine, grinder of the Units 1, as well as other equipment and so on

拥有2米直径吹膜机1台，1米吹膜机2台，800型吹膜机2台，600型吹膜机5台，400型吹膜机8台，自封口袋机2台，气泡袋机3台，1000型电脑8色高速印刷机1台，800型电脑6色印刷机2台，600型电脑6色印刷机2台，600型2色印刷机5台，600型单色印刷机6台，800型复合机2台，600型复合机2台，600型电脑三边封2台。600型电脑烫机10台。600型自封口电脑烫机2台，600型电脑气泡袋烫机3台，1000型电脑烫机1台。800型电脑烫机1台。600型手提袋全自动电脑烫机3台，聚丙吹膜机3台，聚丙袋烫机20台，收缩膜吹膜机2台，收缩膜烫机12台，拆边机，中封机，分切机，造粒机，粉碎机各一台，还有其它设备等等

The main content of this thesis includes six parts. First of all, it is a comprehensive systematic introduction about RSA algorithm including the present application situation and principle of RSA algorithm----producing big prime numbers and secret keys, the encryption arithmetic for information and the decryption for secret information, which establish the theory foundation for achieving concrete; secondly, it introduces some basic conception of RSA digital signature and theory of digital signature realizing process; thirdly, it introduces the basic principle of MD5 algorithm; fourthly, it states design and realization of RSA digital signature in detail. The main modules includes producing RSA secret keys, implementation of RSA encryption algorithm and decryption algorithm, producing message digest and realizing digital signature and verification by RSA; the fifth, it carries on testing entirely, analyzing and improving for this system;The sixth, it analyses the security of RSA digital signature and points out the development direction of RSA digital signature.

本文主要研究的内容包括：第一，对RSA算法进行了全面系统的介绍，包括RSA算法的应用现状和原理—大素数的产生、密钥对的产生、对明文的加密运算和密文的解密运算，为具体实现打下了理论基础；第二，介绍了RSA数字签名的一些基本概念和数字签名的理论实现过程；第三，对MD5算法基本原理的介绍；第四，详述了RSA数字签名的设计与实现，主要实现的模块包括RSA密钥的产生，RSA加密算法和解密算法的实现，消息摘要MD的生成以及利用RSA算法实现数字签名和签名的验证；第五，对该系统进行了整体的测试和分析改进；第六，分析了RSA数字签名的安全性，指出了RSA数字签名的发展方向。

In this dissertation, digital lock-in detection techniques under integer period sampling and non-integer period sampling are separately investigated (1) Under integer period sampling, digital signal sequence is acquired through sampling the measured signal, but digital reference sequence is acquired through mathematical operation, then digital lock-in detection can be realized by calculating crosscorrelation function of digital signal sequence and digital reference sequence Harmonic measure is also analyzed, and a method of measuring harmonic of a periodic signal under aliasing is put forward.

本文对使用采样ADC把模拟信号转换为数字信号并通过计算数字信号的相关函数来实现锁定检测的技术进行了研究，在此基础上设计了一个多功能的数字LIA并在一些科学实验中进行了应用。本文对整周期采样和非整周期采样时的数字锁定检测技术分别进行了研究。(1)在整周期采样时，对被测信号进行采样得到信号序列，而参考序列由数学运算得到，通过计算信号序列和参考序列的互相关函数就可实现锁定检测。

For preparing for the researches of text digital watermarking and advantaging other researchers" development when using the Chinese mathematical expression theory, this paper designs and realizes a development platform of Chinese mathematical expression. It has been proved by experiments that the platform"s function, execution speed and stability can satisfy the requirements of conversion and operation of enormous data.This research found out that the structure information of Chinese have plenty redundant information that can be used by the Chinese mathematical expression for the digital watermarking, the data embedded can possess better robustness. Based on this finding, this paper designs a kind of text digital watermarking method of embedding watermarking by using Chinese structure, and realizes the method by using the Chinese mathematical expression platform.Considering the watermarking embedding algorithms importance to the robustness of the text digital watermarking, this paper makes fully use of the advantage of the Chinese mathematical expression theory to design a kind of layered text method, which has being realized by using the Chinese mathematical expression platform. The layered text method can handle the text as a solid structure, and the embedding data havepreferable robustness.Finally, based on the researches of the text digital watermarking method and the text layered method, this paper integrates the method of making use of the Chinese structure embedding watermarking with the robust algorithm based on text layered, and realizes a brand-new text digital watermarking method. Proved by lots of experiments, this brand-new method has good robustness and better invisibility.

为了为研究工作做准备和方便其他使用汉字数学表达式理论体系的人进行开发，本文基于汉字数学表达式理论设计实现了一个汉字数学表达式平台，实现了Unicode汉字集中的汉字、汉字数学表达式、汉字的Unicode码之间的相互转化、依据汉字数学表达式提取汉字的结构信息、由汉字数学表达式在非中文平台上不依赖字库显示汉字的图像等功能，使用复合文档技术和流压缩技术进行数据的存储，使用对汉字数学表达式进行二叉树拆分来处理汉字数学表达式中包含的信息，使用自定义哈希函数来提高运行速度，实验证明，该平台功能、速度和稳定性完全能满足大量数据的转化和运算要求；通过研究表明汉字的结构信息中存在大量可使用汉字数学表达式理论加以利用的水印加载空间，加载在该空间的数据可以具有较好的鲁棒性，基于此，本文设计了一种利用汉字结构加载水印的文本数字水印方法，并使用汉字数学表达式平台将其实现；由于水印嵌入算法对于文本数字水印的鲁棒性至关重要，本文充分利用汉字数学表达式理论的优点，设计了一种文本分层的方法，并使用汉字数学表达式平台将其实现，使文本成为一个立体的空间，使嵌入在其中的数据具有更好的鲁棒性；最后在基于汉字数学表达式的文本数字水印嵌入方法的研究和基于汉字数学表达式的文本分层方法的研究的基础上，结合利用汉字结构嵌入水印的方法和基于文本分层的抗攻击文本水印嵌入算法实现了一种全新的文本数字水印方法，经实验证明，该方法有良好的鲁棒性和较好的隐蔽性。

X-Digital system company-- the Blackfin processor that ADI firm used in the compositive satellite receiver that a broadcast transmits systematic manufacturer to contain FM modulator in its. X-Digital system company uses Blackfin processor, offerred a kind of such products, promise satellitic operation business to convey digital frequency to still do not have the market that open far-- much resident is unit , for example hotel and apartment building. The satellitic receiver of X-Digital company changes digital satellite signal into the FM imitate signal that can be identified by receiver of consumptive assonance frequency.

X-Digital 系统公司--一家广播传输系统制造商在其带有FM调制器的集成卫星领受器中采用了ADI公司的Blackfin措置器。X-Digital系统公司采用Blackfin措置器，供给了如许一种产物，答应卫星运营商将数字音频传送到远远还没有翻开的市场--多住户单元，例如酒店和公寓大楼。X-Digital公司的卫星领受器将数字卫星信号转换成可被尺度的生产类音频领受器识此外FM模拟信号。

Company Profile Beijing Xinyu win equipment limited liability company operating mainly in the production and domestic and international advanced testing equipment, instrumentation, and diagnostic tools, as well as introduce advanced test, measurement of new technology for operating purposes. A: electrical fire, building fire detection and public safety facilities, equipment detectors B: lightning protection, lightning protection device detection equipment, mine detection device safety box C: Fire Fire Safety Inspection and Testing equipment, and investigate the cause of the fire equipment, police station fire alarm Services and equipment D: fire inspection and fire investigation equipment boxes, fire investigation kits, fire detection equipment to determine the scene Product E: Fire Engineering Detect boxes, cartons Detect building fire service installations, fire detection electrical box F: Airport Fire fire inspection equipment, subway Fire Safety Detect Box G: boilers, pressure vessels and special equipment, elevator equipment Detect H: Victoria seized power telecommunications equipment boxes, mechanical state patrol boxes I: Detect safety boxes, traffic accident investigation boxes, property management Detected me J: Public environmental hygiene Detect boxes, boxes of food safety at the scene detection, occupational health care at the scene Detect boxes, cartons Detect Radiological Protection at the scene, the situation of sanitation and disinfection Detected me, health production supervisor at the scene seized me K: Ultrasonic leak detector, ultrasonic spectrum analyzer, ultrasonic full-function fault detection system L: fire using infra-red thermal imaging, infrared imaging system for industrial use, the security-type infra-red thermal imaging M: Energy Conservation Supervision and Testing Instruments instrument N: Private Product: 3 1/2- 8 1 / 2 handheld / desktop Digital Multimeter, cross-DC clamp level pressure ammeter, temperature gauges, tachometer, digital megohm table, grounding resistance tester, desktop multimeter, digital frequency meter smart, figure synthesis / function signal generator, desktop digital electric bridge, oscilloscopes, infrared thermometer, vibrometer, digital DC regulated power supply, 5 1 / 2 hand-held multi-function calibrator field process instrumentation. O: agent Products:, infrared thermometer, infrared, ultrasonic full-function fault leakage / discharge detection device, flammable / toxic gas detector, harmonic power quality analyzer, portable ultrasonic flowmeter, insulation / Ground Resistance Tester, temperature, current / voltage, the process of signal, thermal resistance / thermocouple, pressure, loop calibrator, such as electronics, telecommunications, electricity, petroleum chemical industry, safety inspection, steel smelting, public environmental protection, fire detection Secret rescue, fire detection equipment, special equipment testing, military field equipment dedicated monitoring equipment and tools.

公司简介北京新宇胜利仪器有限责任公司主要以生产和经营国际，国内先进的检测仪器仪表和设备诊断工具以及介绍先进的测试，测量新技术为经营宗旨。A：消防电气、建筑消防设施检测和公共安全侦检仪器设备B：防雷、避雷装置检测仪器设备、防雷装置安全检测箱C：消防防火监督检测装备、火灾原因调查装备、公安派出所消防警务装备D：防火检查与火灾勘查仪器箱、火灾勘查工具箱、消防产品现场判定检测仪器E：消防工程检测箱、建筑消防设施检测箱、消防电气检测箱F：机场消防防火检查仪器设备、地铁消防安全检测箱G：锅炉、压力容器和特种设备、电梯检测仪器H：电信电源维检仪器箱、机械状态巡检箱I：交通安全检测箱、交通事故勘查箱、物业管理检测箱J：公共卫生环境检测箱、食品安全现场检测箱、职业健康监护现场检测箱、放射防护现场检测箱、卫生消毒状况检测箱、健康品生产现场监检箱K：超声波泄漏检测仪、超声波频谱分析仪、超声波全功能故障检测系统L：消防用红外热像仪、工业用红外热像仪、本安型红外热像仪M：节能监督检测仪器仪表工具N ：自有产品：3 1/2-8 1/2位手持/台式数字多用表，交、直流钳形高低、压电流表，温度仪表，转速表，数字兆欧表，接地电阻测试仪，台式多用表，数字智能频率计，数字合成/函数信号发生器，台式数字电桥，示波器，红外测温仪，测振仪，数字直流稳压电源，5 1/2位手持式多功能现场过程仪表校验仪。O：代理产品：，红外测温仪，红外热像仪，超声波全功能故障泄漏/放电侦测仪，可燃/有毒气体检测仪，电力质量谐波分析仪，便携式超声波流量计，绝缘/接地电阻测试仪，温度、电流/电压、过程信号、热电阻/热电偶、压力、回路校验仪等电子、通讯、电力、石油化工、安全检查、钢冶、公共环保、消防特勤侦检救援、消防检测设备、特种设备检测、军事领域的专用仪器监测设备与工具。

The main routes of this graduation thesis is to compile uniformity gradient or MTF software 、match for the quality of digital cameral image the last of digital images and give a comprehensive evaluation for the digital image in discussion the basic principles of digital mapping cameras and digital camera-image quality evaluation.

本次毕业文的主要研究内容是在讨论数码航摄仪的基本原理和数码航摄仪影像质量评价的基本原理上，编写均匀梯度和MTF软件对数码航摄仪影像质量进行匹配，最后对数码航摄仪影像进行综合评价。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。