True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Data is
information that is organized, meaningful, and useful.
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2.
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Information
refers to the raw facts, including numbers, words, images, video, and sounds, given to a computer
during the input operation.
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3.
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Because a
computer's electronic circuits rarely fail and the data flows along these circuits at close to the
speed of light, processing can be accomplished in billionths of a second.
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4.
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A typical
notebook computer keyboard has 101 to 105 keys.
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5.
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The control
unit is the part of the central processing unit (CPU) that interprets the instructions.
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6.
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The
arithmetic/logic unit is the part of the central processing unit (CPU) that performs the logical and
arithmetic processes.
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7.
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One kilobyte
(K or KB) equals approximately one million memory locations, and one megabyte (M or MB) equals
approximately 1,000 memory locations.
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8.
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Nonimpact
printers print by striking an inked ribbon against the paper.
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9.
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An impact
printer does a better job printing different fonts than a nonimpact printer and is
quieter.
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10.
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The popular
and affordable ink-jet printer works similarly to a copying machine by converting data from the
computer into a beam of light that is focused on a photoconductor drum, forming the images to be
printed.
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11.
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Laser
printers form a character by using a nozzle that sprays drops of ink onto the page.
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12.
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Laser
printers produce high-quality black-and-white or color output and are used for applications that
combine text and graphics such as desktop publishing.
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13.
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Because
today's 3.5-inch disks are not at all floppy, the term floppy disk no longer is used.
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14.
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A floppy
disk is a type of magnetic disk, which means it uses magnetic patterns to store items such as data,
instructions, and information on the disk's surface.
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15.
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Although
available in nonremovable form, most hard disks can be removed from the computer.
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16.
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When reading
or writing, the read/write heads on a hard disk drive actually touch the surface of the
disk.
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17.
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A CD-RW
(compact disc-rewritable) is an erasable disc you can write on multiple times.
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18.
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System
software consists of programs that tell a computer how to produce information.
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19.
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Application
software consists of programs to control the operations of computer equipment.
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20.
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Word
processing software is oriented toward working with text, but most word processing packages also can
include numeric and graphic information.
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21.
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Electronic
spreadsheet software eliminates the tedious recalculations required with manual
methods.
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22.
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Presentation
graphics software allows users to create documents called slides to be used in making
presentations.
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23.
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A network
that connects computers in a limited geographic area, such as a school computer laboratory, office,
or group of buildings, is called a wide area network (WAN).
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24.
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A network
that covers a large geographical area, such as one that connects the district offices of a national
corporation, is called a local area network (LAN).
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25.
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An Internet
service provider (ISP) is an organization that supplies connections to the Internet for a monthly
fee.
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26.
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An online
service provides access to the Internet, but it also offers a variety of other specialized content
and services such as financial data, hardware and software guides, news, weather, legal information,
and other similar commodities.
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27.
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The fees for
using an online service usually are slightly lower than the fees for using an Internet service
provider (ISP).
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28.
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A Web site
is a related collection of Web pages.
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29.
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Most Web
page URLs begin with http://, which stands for hypertext transfer protocol.
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30.
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Consumer to
consumer (C2C) e-commerce involves the sale of goods to the general public.
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31.
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Knowing what
application products he or she plans to use will help a buyer decide on the type of computer to buy,
as well as to define the memory, storage, and other requirements.
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32.
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Free
software has value only if it would not have been purchased if it had not come with the
computer.
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33.
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Mail-order
companies that sell computer systems by telephone or online via the Web often demand the highest
prices but extend more personal service.
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34.
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When buying
a used computer system, stick with name brands because most brand-name systems have longer
warranties, are better supported, and have more authorized centers for repair services.
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35.
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Monitors,
printers, and modems always are included in the base computer system price.
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36.
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The lowest
cost computer system always is the best buy.
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37.
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When
purchasing a computer system, it is best to buy a system compatible with one used
elsewhere.
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38.
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Many credit
cards now offer purchase protection and extended warranty benefits that cover a computer buyer in
case of loss of or damage to purchased goods.
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39.
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Computer
obsolescence can be delayed by purchasing the fastest processor, the most memory, and the largest
hard drive that can be afforded.
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40.
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Active-matrix screens display high-quality color that is viewable from all
angles.
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41.
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Today, most
notebook computers come with an internal CD-ROM drive.
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42.
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If a buyer
anticipates running a notebook computer on batteries frequently, a system should be chosen that uses
nickel cadmium or nickel hydride batteries (they last longer than lithium-ion
batteries).
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43.
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Some
handheld computers come with a modem that can send and receive data across telephone.
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44.
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Ergonomics
is an applied science devoted to making the equipment and its surrounding work area safer and more
efficient.
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45.
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To avoid
data loss, do not place floppy disks on a telephone or near any other electrical or electronic
equipment.
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46.
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Being a
registered user not only can cost time and money when calling with a support question, it also makes
a computer buyer ineligible for special pricing on software upgrades.
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47.
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Before
working inside a computer, turn on the power and connect the equipment to the power
source.
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48.
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A computer
virus is a potentially damaging computer program designed to infect other software or files by
attaching itself to the software or files with which it comes in contact.
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49.
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Defragmenting a hard disk scrambles the files so they are in noncontiguous
(nonadjacent) clusters, making disk operations slower.
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50.
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Diagnostic
tools help test system components, monitor system resources such as memory and processing power, undo
changes made to system files, and more.
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