Modern computers are electronic and digital. CPU The actual machinery; wires, transistors, and circuits are called hardware while the instructions and Data are called software. All the general-purpose computers require the following hardware components: Central processing unit (CPU) The “heart” or “Brain” of the computer, the component that actually executes instructions is known as CPU or Central Processing Unit. Memory It is also known
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claims or other product information contained in this document are subject to change without notice. This document may not be reproduced, in whole or in part, without the express written consent of Communications Specialties, Inc., Fiberlink, Pure Digital Fiberlink, the starburst logo, Scan Do and Deuce are registered trademarks of Communications Specialties, Inc. CSI and the triangle designs are trademarks of Communications Specialties, Inc. October 8, 2009 Table of Contents A Brief Introduction
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between two devices in which flow of data is bidirectional and it occurs simultaneously. Here signals going in either direction share the capacity of the link. E.g. telephone 5.What is a network? Ans: It is a set of devices connected by communication links. A node can be a computer or any other device capable of sending and/or receiving data generated by other nodes on the network. 6.What is distributed processing? Ans: It is a strategy in which services provided by the network reside at multiple sites
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compare them in terms of speed and cost? Twisted wire consists of strands of copper wire twisted in pairs and is the oldest transmission medium. Many telephone systems had twisted wires installed for analog communication but can also be used for digital. The twisted wires used in today’s LANs, such as CAT5, can obtain speeds up to 1 Gbps but is limited to a maximum run of 100 meters. Coaxial cable consists of thickly insulated copper wire that can transmit a larger volume of data than that of twisted
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Today data security plays an important role in software domain and quality of service and confidence, Cloud computing [1] focuses a new challenging security threats. Therefore, a data security model must solve the most challenges of cloud computing security issues [2]. Using Internet as the backbone, cloud computing confirms that it is possible to provide resources as a “utility” to end users “as and when needed” basis [3]. Cloud Computing has some security issues such as access control, authentication
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Value Decomposition (SVD) technique. Basically, Image fusion can be described as a technique which is used to generate a single good quality image from one or more images. Image fusion can be applied at many levels viz. pixel level, feature level, signal level and decision level. Image fusion can be applied in many areas like recognition of patterns, to enhance visual features, detection of objects, area surveillance etc.[2] The techniques that are used mostly are Intensity-Hue-Saturation (IHS), high
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2 Software n Obtaining Application Software Lesson 3 The Internet n Finding Information on the Web n Evaluating Information on the Web Lesson 4 Understanding E-mail n Sending and Receiving E-mail and Other Forms of Digital Communication n Dangerous E-mail Lesson 5 Types of Computer Crimes n Copyright Laws n Acceptable Use Policies Lesson 6 Computer Workers 3 Introduction to Computers and the Internet 4 WORDS TO KNOW BIOS The
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WHITE PAPER 1 7 WHITE PAPER 2 Image Signal Processor (ISP) of 8M pixel 30fps with addon post processing units, such as 3-Dimensional Noise Reduction (3DNR), Vdeo Dgital Image Stabilization (VDIS), and Optical Distortion Compensation (ODC) integrated. Its ISP pipeline supports zero-shutter lag. BOM savings by integrating USB Host/Dev3.0, HSIC with PHY transceivers, and eight channels of I2C supporting a variety of sensors. Since 2009, the mobile industry has experienced an unprecedented
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Projects Agency Network (ARPANET) for the United States Department of Defense. It was the first computer network in the World. Development of the network began in 1969, based on designs developed during the 1960s. Most networks use distributed processing, in which a task is divided among multiple computers. Instead of one single large machine being responsible for all aspects of process, separate computers (usually a personal computer or workstation) handle a subset. PURPOSE Computer networks
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the ASCII uses a combination of ones and zeros to display a single letter of the alphabet (Cellonics, 2001). Then the data is sent over radio frequency cycle to its destination where it is then decoded. The original technology also utilizes carrier signals as a reference which uses hundreds of wave cycles before a decoder can decide on the bit value (Legard, 2001), whether the bit is a one or a zero, in order to translate that into a single character. The Cellonics technology came about after studying
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