Discovering Computers - Portland Community College
Discovering ComputersTechnology in a World of Computers,Mobile Devices, and the InternetChapter 3Computers andMobile Devices
Objectives OverviewDescribe the characteristicsand uses of desktops,laptops, tablets, andhandheld computersDescribe the characteristicsand types of serversDescribe cloud computingand identify its usesSee Page 104for Detailed ObjectivesDifferentiate among POSterminals, ATMs, and selfservice kiosksDescribe the characteristicsand uses of smartphones,digital cameras, portablemedia players, and e-bookreadersDiscovering Computers 2014: Chapter 32
Objectives OverviewDescribe the characteristicsof and ways to interact withgame devicesIdentify uses of embeddedcomputersIdentify safeguards againsthardware theft andvandalism and hardwarefailureSee Page 104for Detailed ObjectivesDifferentiate a port from aconnector, identify variousports and connectors, anddifferentiate amongBluetooth, Wi-Fi, and NFCwireless device connectionsDiscuss ways to preventhealth-related injuries anddisorders caused fromtechnology use, anddescribe ways to design aworkplace ergonomicallyDiscovering Computers 2014: Chapter 33
Computers and Mobile Devices Types of computers include:Desktop and mobilecomputersServers andterminalsGame devicesPage 104Smartphones, digitalcameras, e-bookreaders and portablemedia playersEmbeddedcomputersDiscovering Computers 2014: Chapter 34
Desktops and Mobile Computers A personal computer (PC) is a computer that canperform all of its input, processing, output, andstorage activities by itself and is intended to beused by one person at a time A mobile computer is a portable personalcomputer, designed so that a user easily can carryit from place to placePage 104Discovering Computers 2014: Chapter 35
Desktops and Mobile ComputersPage 105Figure 3-1Discovering Computers 2014: Chapter 36
Desktops and Mobile Computers A desktop, or desktop computer, is a personalcomputer designed to be in a stationary location,where all of its components fit on or under a deskor tablePages 106 – 107Figure 3-3Discovering Computers 2014: Chapter 37
Desktops and Mobile Computers A laptop, also called a notebook computer, is athin, lightweight mobile computer with a screenin its lid and a keyboard in its basePage 108Figure 3-4Discovering Computers 2014: Chapter 38
Desktops and Mobile Computers A tablet is a thin, lightweight mobile computerthat has a touch screenPage 109Figure 3-5Discovering Computers 2014: Chapter 39
Desktops and Mobile Computers A handheld computer is a computer small enoughto fit in one handPage 111Figure 3-7Discovering Computers 2014: Chapter 310
Servers A server is a computer dedicated to providing oneor more services to other computers or devices ona network– Rack server– Blade server– Tower serverPages 111 – 112Figure 3-8Discovering Computers 2014: Chapter 311
ServersPage 111Table 3-1Discovering Computers 2014: Chapter 312
Servers A mainframe is a large, expensive, powerful serverthat can handle hundreds or thousands ofconnected users simultaneouslyPages 112 – 113Figure 3-9Discovering Computers 2014: Chapter 313
Supercomputers A supercomputer is the fastest, most powerfulcomputer — and the most expensivePage 113Figure 3-10Discovering Computers 2014: Chapter 314
Terminals A terminal is a computer, usually with limitedprocessing power, that enables users to send data toand/or receive information from a server, or hostcomputer A thin client is a terminal that looks like a desktop buthas limited capabilities and components Most retail stores use a POS terminal to recordpurchases, process credit or debit cards, and updateinventoryPage 113Figure 3-11Discovering Computers 2014: Chapter 315
Terminals An ATM (automated teller machine) is a selfservice banking terminal that connects to a hostcomputer through a networkPage 114Figure 3-12Discovering Computers 2014: Chapter 316
Terminals A self-service kiosk is a freestanding terminal thatusually has a touch screen for user interactionPage 115Table 3-2Discovering Computers 2014: Chapter 317
Cloud Computing Cloud computing refers to an environment ofservers that house and provide access toresources users access through the InternetPage 116Figure 3-14Discovering Computers 2014: Chapter 318
Mobile Devices A smartphone is an Internet-capable phone thatusually also includes a calendar, an appointmentbook, an address book, a calculator, a notepad,games, browser, and numerous other apps Many smartphones have touch screens. Instead ofor in addition to a touch screen, some have abuilt-in mini keyboard on the front of the phoneor a keyboard that slides in and out from behindthe phonePage 117Discovering Computers 2014: Chapter 319
Mobile DevicesPage 118Figure 3-15Discovering Computers 2014: Chapter 320
Mobile Devices A digital camera is a mobile device that allowsusers to take photos and store the photographedimages digitallyPage 120Figure 3-16Discovering Computers 2014: Chapter 321
Mobile DevicesPage 121Figure 3-17Discovering Computers 2014: Chapter 322
Mobile Devices A portable media player, sometimes called apersonal media player, is a mobile device onwhich you can store, organize, and play or viewdigital mediaPage 122Figure 3-19Discovering Computers 2014: Chapter 323
Mobile Devices An e-book reader (shortfor electronic bookreader), or e-reader, is amobile device that isused primarily forreading e-books andother digitalpublicationsPage 124Figure 3-20Discovering Computers 2014: Chapter 324
Game Devices A game console is a mobile computing devicedesigned for single-player or multiplayer videogames A handheld game device is a small mobile devicethat contains a screen, speakers, controls, andgame console all in one unit Game controllers include gamepads, joysticks andwheels, dance pads, and a variety of motionsensing controllersPage 125Discovering Computers 2014: Chapter 325
Game DevicesPage 125Figure 3-21Discovering Computers 2014: Chapter 326
Embedded Computers An embedded computer is a special-purposecomputer that functions as a component in alarger cesscontrollers androboticsPages 126 - 127AutomobilesComputerdevices andoffice machinesDiscovering Computers 2014: Chapter 327
Embedded ComputersPage 127Figure 3-22Discovering Computers 2014: Chapter 328
Putting It All TogetherPage 128Table 3-3Discovering Computers 2014: Chapter 329
Ports and Connections A port is the point at which a peripheral device attachesto or communicates with a computer or mobile device sothat the peripheral device can send data to or receiveinformation from the computer or mobile devicePage 129Figure 3-23Discovering Computers 2014: Chapter 330
Ports and Connections A connector joins a cable to a port. A connector atone end of a cable attaches to a port on thecomputer or mobile device, and a connector atthe other end of the cable attaches to a port onthe peripheral devicePage 130Discovering Computers 2014: Chapter 331
Ports and ConnectionsPage 130Table 3-4Discovering Computers 2014: Chapter 332
Ports and Connections A USB port, short for universal serial bus port, canconnect up to 127 different peripheral devicestogether with a single connector Instead of connecting peripheral devices directlyto ports on a mobile computer, some mobile usersprefer the flexibility of port replicators anddocking stationsPage 131Discovering Computers 2014: Chapter 333
Ports and ConnectionsPage 132Figure 3-24Discovering Computers 2014: Chapter 334
Ports and Connections Instead of connecting computers and mobiledevices to peripheral devices with a cable, someperipheral devices use wireless communicationstechnologiesBluetoothPages 132 - 133Wi-FiDiscovering Computers 2014: Chapter 3NFC35
Protecting Hardware Some schools and businesses use cables to lockcomputers and help prevent theft of equipmentPage 134Figure 3-25Discovering Computers 2014: Chapter 336
Protecting Hardware Hardware can fail for a variety of reasons: aginghardware; random events such as electrical powerproblems; and even errors in programs or apps– Undervoltage– Overvoltage or power surgePages 134 - 135Discovering Computers 2014: Chapter 337
Protecting Hardware A surge protector, alsocalled a surgesuppressor, useselectrical componentsto provide a stablecurrent flow andminimize the chances ofan overvoltage reachingthe computer and otherelectronic equipmentPage 135Figure 3-27Discovering Computers 2014: Chapter 338
Protecting Hardware An uninterruptiblepower supply (UPS) is adevice that containssurge protection circuitsand one or morebatteries that canprovide power during atemporary orpermanent loss ofpowerPage 135Figure 3-28Discovering Computers 2014: Chapter 339
Health Concerns of Using Technology A repetitive strain injury (RSI) is an injury or disorderof the muscles, nerves, tendons, ligaments, and joints Computer vision syndrome (CVS) is a technologyrelated health condition that affects eyesight Ergonomics is an applied science devoted toincorporating comfort, efficiency, and safety into thedesign of items in the workplace Technology addiction occurs when the technologyconsumes someone’s entire social lifePages 136- 138Discovering Computers 2014: Chapter 340
Health Concerns of Using TechnologyPage 138Figure 3-31Discovering Computers 2014: Chapter 341
SummaryCharacteristics of andpurchasing guidelines fordesktops, laptops, tablets,smartphone, digital cameras,and portable media playersHandheld computers, servers,supercomputers, point-of-saleterminals, ATMs, self-servicekiosks, e-book readers, gamedevices, embedded computers,and cloud computingWays to protect hardwarePage 139Ports and connectionsHealth concerns of usingtechnology and preventativemeasuresDiscovering Computers 2014: Chapter 342
Discovering ComputersTechnology in a World of Computers,Mobile Devices, and the InternetChapter 3Computers andMobile DevicesChapter 3 Complete
Page 117 Discovering Computers 2014: Chapter 3 19 . Mobile Devices Page 118 20 Figure 3-15 Discovering Computers 2014: Chapter 3 . Mobile Devices A digital camera is a mobile device that allows users to take photos and store the photographed images digitally Page 120 21 Figure 3-16
Discovering Computers 2014 Chapter 2 1 DISCOVERING COMPUTERS: TECHNOLOGY IN A WORLD OF COMPUTERS, MOBILE DEVICES, AND THE INTERNET CHAPTER TWO: THE INTERNET END OF CHAPTER SOLUTIONS STUDY GUIDE This study guide identifies material you should know for the Chapter 2 exam. You may want to write the answers in a notebook, enter them on your digital device, record them into a
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Discovering Advanced Algebra also completes the fully updated Discovering Mathematics series. All of the features that make Discovering Algebra and Discovering Geometry innovative and exciting are now incorporated into this book as well, to make a coherent and streamlined series. Investigations are at the heart of each book.
Discovering Computers Fundamentals, 2010 Edition Chapter 6 Page 255 31. Optical Discs Discovering Computers Fundamentals, 2010 Edition Chapter 6 Page 255 32 Figure 6-23. Optical Discs A DVD-ROM is a high-capacity optical disc on which users can read but not write or erase
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Kata Kunci : Asam folat, Anemia, Gagal Ginjal Kronik, Rawat Inap . ii ABSTRACT A STUDY OF FOLIC ACID USE IN ANEMIC CHRONIC RENAL FAILURE PATIENTS HOSPITALIZED IN RSUD SIDOARJO Chronic renal failure is disturbance of kidney functions that progressive and irreversible where the ability of kidney to maintain the metabolism and liquid balance also electrolit causes uremic. Anemic is a complication .
