Chapter 4 quiz
____ is the process of carrying out the commands.
Executing
A higher system clock speed means the CPU can process fewer instructions per second than the same CPU with a lower clock speed.
False
A lower resolution uses a greater number of pixels.
False
A megabyte, abbreviated MB, is equal to approximately 1 thousand bytes. ____________
False
An internal hard disk is a separate hard disk that connects to a USB or FireWire port by a cable. ____________
False
Executing is the process of translating the instructions into commands the computer understands.
False
In a bit, 0 is used to represent the electronic state of off (presence of an electronic charge), and 1 is used to represent the electronic state of on (absence of an electronic charge).
False
Many desktop computer keyboards have a numeric keypad located on the left side of the keyboard.
False
Many of the electronic components in the system unit reside on a circuit board called the microprocessor as shown in the accompanying figure. _________________________
False
The contents of nonvolatile memory are lost (erased) when the computer power is turned off.
False
Touch screens that recognize multiple points of contact at the same time are known as widescreen.
False
Two commonly used types of impact printers are ink-jet printers and laser printers.
False
With a touch screen, the input device is a digital pen.
False
____ is the process of obtaining a program instruction or data item from memory.
Fetching
____ chips are used to store data and programs on many mobile computers and devices.
Flash memory
____ is an example of volatile memory.
RAM
____ memory is nonvolatile because it retains its contents even when the power is turned off.
ROM
____ is the capability of a computer to distinguish spoken words.
Speech recognition
____ is the process of writing results to memory.
Storing
____ often are used in freestanding computers that provide information to users.
Touch screens
A digital video disc read-only memory (DVD-ROM) is capable of storing from 4.7 GB to 17 GB of information.
True
A terabyte, abbreviated TB, is equal to approximately 1 trillion bytes.
True
A widescreen flat panel monitor is wider than it is tall.
True
As illustrated in the accompanying figure, four common types of output are text, graphics, audio, and video.
True
Audio output is any music, speech, or other sound produced by a computer.
True
Current personal computer hard disks can store from 320 GB to 1.5 TB or more of data, instructions, and information.
True
Data projectors can be large devices attached to a ceiling or wall in an auditorium, or they can be smaller portable devices.
True
Laser printers usually use individual sheets of paper stored in a removable tray that slides into the printer case.
True
The combinations of 0s and 1s used to represent characters are defined by patterns called a coding scheme.
True
The control unit coordinates most of the operations in a computer.
True
The universal serial bus (USB) port can connect up to 127 different peripheral devices with a single connector type.
True
To access data or instructions in memory, the computer references the addresses that contain the bytes of data.
True
A ____ port is used to connect up to 127 different peripheral devices with a single connector.
USB
The size of a monitor is measured ____.
diagonally, from corner to corner
As shown in the accompanying figure, CompactFlash, microSD, Memory Stick, and Secure Digital are all examples of ____ memory cards.
flash
Arithmetic operations ____.
include addition, subtraction, multiplication, and division
Because of their reasonable cost and print quality, ____ printers often are used in homes and schools.
ink-jet
Storage devices can function as sources of ____.
input and output
A ____ is equal to exactly 1,024 bytes, but often is rounded down to 1,000 bytes by computer users.
kilobyte (abbreviated K or KB)
A ____ is equal to approximately 1 million bytes.
megabyte (abbreviated MB)
Many mobile devices and consumer electronics include ____ hard disks, which provide users with greater storage capacities than flash memory.
miniature
While laser printers typically cost ____.
more than ink-jet printers, they also are much faster
A ____ is the most widely used pointing device because it takes full advantage of a graphical user interface.
mouse
Each dot, called a ____ is a single point in an electronic image.
pixel
All of the following are commonly used output devices EXCEPT ____.
pointing devices and keyboards
A ____ converts text or images on an original document into digital data that can be stored on a storage medium and processed by the computer.
scanner
A(n) ____ stores data on a thin microprocessor embedded in the card.
smart card
Digital cameras, media players, smartphones, and many other devices use miniature mobile ____ media.
storage
To work with a saved file, the file must be removed from ____.
storage and placed in memory
A ____ is a small, flat, rectangular pointing device that is sensitive to pressure and motion.
touchpad
