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A monitor with an aspect ratio of 16 × 9 is better suited for displaying two pages side-by-side than a
monitor with a 4 × 3 aspect ratio.
Because bar codes were designed to be read by computers, the devices that read them are extremely
An image on a standard LCD monitor is made up of thousands of tiny squares of colors called pixels.
Multi-touch technology was developed so that a PC could be connected to several pointing devices at
the same time.
The mouse is standard equipment on virtually all modern PCs except
a. PCs without USB or FireWire ports.
b. tower PCs.
c. all-in-one PCs.
d. laptop and tablet PCs.
e. The mouse is standard equipment on all PCs.
Which of these is both an input and an output device?
a. A bar-code reader
b. A flatbed scanner
c. A touch screen
d. A sensor
e. A plotter
Which of these peripherals is generally connected to a standard desktop PC through a port that's not a
d. External drive
e. Digital camera
Why was the arrangement of keys on the QWERTY keyboard chosen?
a. Because it corresponds to alphabetical order in the Esperanto language
b. Because it corresponds to alphabetical order in Latin
c. To reduce typing speed
d. To minimize finger motion to reach the most commonly typed characters
e. To honor Harold Qwerty, the inventor of the keyboard
Optical character recognition can be used to extract text from writing on
a. smart whiteboards.
b. tablet PCs.
c. photographs of typewritten documents.
d. scanned letters.
e. All of the above
Which of these input devices is least likely to use multi-touch technology?
a. A touch-sensitive display
b. A touch tablet
c. A keyboard
d. A trackpad
e. A smart phone
LCD technology is used in
a. notebook computer displays.
b. desktop computer displays.
c. video projectors.
d. smart phone displays.
e. All of the above
The size of a display is measured
a. across the top of the display.
b. down the left side of the display.
c. across the middle of the display.
d. down the center of the display.
e. from the upper-left corner to the lower-right corner of the display.
Which of these is most like the open architecture of the modern PC?
a. A modern car with a computer-controlled emissions system that can be adjusted by
b. A "smart" microwave with an embedded computer that allows for complex recipes and
c. A stereo system that allows speakers, disc players, and other components to be replaced
by the owner
d. A handheld computer with built-in firmware for all of the most common PDA tasks
e. A music keyboard that includes a built-in synthesizer and an LCD display
External drives are typically connected to the computer by
d. Both A and B
e. None of these
A multifunction printer generally includes all of these except
a. a scanner.
b. an inkjet or laser printer.
c. a port for connecting to a phone line.
d. a port for connecting to a PC or a network.
e. a hard disk drive.
USB flash drives have all of the following advantages over other storage options except
a. they are small and portable.
b. they are cheaper per MB than other storage options.
c. they can be used to access and store your data on virtually any computer with a USB port.
d. they can plug into almost any modern digital camera.
a. they are less prone to being damaged if dropped or scratched.
Hard disk drives have the disadvantage that
a. they hold less information than CDs do.
b. they are more likely to fail than other computer components.
c. they cannot be backed up.
d. their contents are lost when they lose power.
e. All of the above
Most digital cameras today store images using
b. hard disks.
c. flash memory
d. digital ink.
e. None of the above
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