Chapter 5 Questions
True/False
Indicate whether the sentence or statement is true or false.
1. Data are the steps that tell a computer how to perform a particular task.
2. The mouse pad protects the ball in a mechanical mouse from a build-up of dust and dirt, which could cause it to
malfunction.
3. The mouse is the most widely used pointing device today.
4. Because they require little arm movements, users enter large amounts of data into touch screens.
5. Architects, mapmakers, designers, and artists create drawings and sketches by using a pressure-sensitive pen or a
cursor on a graphics tablet.
6. Microsoft Office supports voice recognition.
7. Voice recognition programs are 100% accurate.
8. A camera with a 5.1-megapixel (4,200,000 pixels) resolution will provide a poorer quality than one with a 3.2megapixel resolution.
9. To participate in a video conference, a user needs video conferencing software along with a microphone, speakers, and
a video camera attached to a computer.
10. Current OCR software has a very low success rate and usually can identify fewer than 10 percent of scanned material.
11. The United States Postal Service (USPS) uses a POSTNET bar code.
12. Exposure to a magnet or magnetic field can erase the contents of a card’s magnetic stripe.
13. Iris recognition systems are very inexpensive and are used by school cafeterias.
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
14. A program is _____.
a. a collection of unprocessed text, numbers, images, audio, and video
b. a series of instructions that tells a computer what to do and how to do it
c. an instruction issued by replying to a question that is displayed
d. an instruction that causes a single specific action to be performed
15. A command is _____.
a. a collection of unprocessed text, numbers, images, audio, and video
b. a series of instructions that tells a computer what to do and how to do it
c. an instruction issued by replying to a question that is displayed
d. an instruction that causes a program to perform a specific action
16. A(n) _____ uses devices that emit and sense light to detect the mouse’s movement.
a. optical mouse
c. audio mouse
b. mechanical mouse
d. ergonomic mouse
17. PDAs ship with a basic _____, which is the primary input device.
a. keyboard
c. stylus
b. trackball
d. touch screen
18. A _____ is the smallest element in an electronic image.
a. byte
c. character
b. pixel
d. point
19. Manufacturers often use _____ to represent a digital camera’s resolution.
a. points per inch (PPI)
c. points per screen (PPS)
b. pixels per screen (PPS)
d. pixels per inch (PPI)
20. The quality of a scanner is measured by the number of bits it stores in a pixel and the number of pixels per inch; the
higher each number the _____ the scanner.
a. poorer the quality, and the less expensive
b. better the quality, and the less expensive
c. poorer the quality, but the more expensive
d. better the quality, but the more expensive
21. Retail and grocery stores use the _____ bar code.
a. UPC (Universal Product Code)
b. Interleaved 2 of 5
c. Codabar
d. POSTNET (Postal Numeric Coding Technique)
22. _____ is used almost exclusively by the banking industry for check processing.
a. MICR
c. MIDI
b. OCR
d. OCM
23. A(n) _____, which is comparable in size to a credit card or ATM card, stores personal data on a thin microprocessor
embedded in the card.
a. adapter card
c. digital card
b. smart card
d. video card
24. An option for people with limited hand movement is a _____ to control the pointer or insertion point.
a. portable keyboard
c. head-mounted pointer
b. touchpad
d. touch screen
25. With _____, the computer will detect human motions.
a. voice recognition
c. face recognition
b. signature recognition
d. gesture recognition
Chapter 5 Questions06
Answer Section
TRUE/FALSE
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2.
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4.
5.
6.
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8.
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234
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OBJ:
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MULTIPLE CHOICE
14.
15.
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25.
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B
D
A
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B
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D
A
A
B
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D