Chapter 3 Review Questions 1-18 (page 130) 1. When determining the appropriate hardware components of a new information system‚ what role must the user of the system play? When determining the appropriate hardware components of a new information system‚ the user of the system must assemble an effective and efficient system. The user should select and organize components while understanding the trade-offs between overall system performance and cost‚ control‚ and complexity. The user involved in selecting
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from EMI. Has no shielding. Shielded Twisted Pair (STP) Same as the UTP cables except it is shielded in a metal sheath around it to stop external interference. Fiber-Optic Cable A cable that uses glass to transmit data using light waves. Dark Fiber Optical fiber that has already been laid but is not currently being used. Coaxial Cable A Cable that is commonly used in audio and video. It connects to cable television to televisions and also used in cable internet modems. Plenum The space between the ceiling
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Table of contents Page 1: Information page. Page 2: Table of contents. Page 3: Why I chose a tree topology. Diagram of tree topology. Page 4: Hardware and software required. Communications mediums and protocols. Page 5: Advantages and disadvantages for staff. Page6: Advantages and disadvantages for learners. Social and ethical implications. Page7: Security of network. Bibliography. Diagram
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Electronics- Fall 2012 Wired Optical Mouse Dissection For the “Take it Apart and Figure It Out” Project‚ Team Arsenic was given a wired optical mouse. The mouse brand was Onn‚ produced by Blue Trace Technology and sold by Wal-Mart. During the in-class part‚ we obtained a basic understanding of the workings of the mouse‚ but‚ to completely understand the operation of the mouse‚ we had to research the various parts individually since no blueprint for the mouse exists. After understanding the
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Telecommunications Cabling Building Codes Kevin Wingate – NT1310 Introduction • The information in this presentation should be useful in making design-related decisions that will not only satisfy the move to our new building Information Technology (IT) requirements but also meet the needs of the building and its future occupants with respect to voice‚ video and data communications ANSI/EIA/TIA standards • * ANSI/EIA/TIA standards 568-C-Commercial Building Telecommunications Cabling Standard •
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one for the left and right positioning Resolution (resolving power): is the ability to distinguish two points as separate when they are close together Wavelength: the distance between similar points along a wave Compound light microscope: is an optical instrument comprised of more than one lens and uses light to illuminate the object under study Electron microscope: can provide magnifications in the vicinity of 1 to 2 million power Cell: is a fundamental anatomic until in which all life is contained
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1. Background information ownership‚ history‚ size‚ business scope‚ major products/services‚ and major markets AKIRA was established in 1990 as a Singapore home grown brand‚ targeting mainly on the mass-market. The parent company‚ TT International is a leading Singapore-based player in global trading of consumer electronics. They focus on affordability and quality of their products‚ which then became their brand values. Started with only 12 products‚ they expanded to more than 2‚000 models
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people watch movies. VHS’s successor‚ the DVD‚ was not quite as much of a game changer‚ but it still had a huge impact on the home video market. DVD came on the scene in the late 1990s‚ but the story actually begins in the early 1960s. In 1961‚ optical recording technology was patented by David Paul Gregg and James Russell. It wasn’t until the 70s that progress was seen on this front and in 1978 the Laserdisc format was released. Laserdisc was the major predecessor to DVDs‚ but it never really gained
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Polyethylene 2. "Mylar" tape 3. Stranded metal (steel) wires 4. Aluminum water barrier 5. Polycarbonate 6. Copper or aluminum tube 7. Petroleum jelly 8. Optical fibers These fibre optic cables carry DWDM (http://en.wikipedia.org/wiki/Wav...) laser signals ( TCP/IP packets etc. ) at a rate of terabytes per second. They use optical repeaters to strengthen the signal which attenuates over long distances. These are powered by copper cables shown above. They have a decade lifespan and costs
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NIGHT VISION TECHNOLOGY ABSTRACT A night vision device (NVD) is an optical installment that allows images to be produced in levels of light approaching total darkness. They are most often used by the military and law enforcement agencies‚ but are available to civilian users. The term usually refers to a complete unit‚ including an image intensifier tube‚ a protective and generally water-resistant housing‚ and some type of mounting system. Many NVDs also include sacrificial lenses‚ IR illuminators
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