Multiple Choice Quiz
1.
The central processing unit is the most important hardware component of
a computer system. It is also known as a(n):
a.
CPU or the central processor.
b.
Instruction processor
c.
Main microprocessor
d.
All of the above
2.
One device used as an input device in a computer system is a pointing
stick. A pointing stick is best described as:
a.
A small gearshift lever set in a box
b.
A stationary device containing a roller ball whose top is exposed
outside its case.
c.
A pen-shaped device with a ballpoint at the end
d.
A small buttonlike device, sometimes likened to the eraser head of a
pencil
3 Which one of the following
statements would best describe magnetic strip technology?
a.
It is a form of data entry that helps computers read credit cards
b.
It is a form of computing where debit and credit cards have an embedded
microprocessor chip
c.
It is a form of technology that enables you to shoot, store, and
download still photos or full-motion video with audio into your computer system
d.
It is a form of technology that is commonly used in banks in order to
magnetically read checks and deposit slips
4. Which one of the following
printing devices uses an electrostatic process similar to a photocopying
machine?
a)
Inkjet printers
b)
Laser printers
c)
Dot-matrix printers
d)
Bubble jet printers
2.
A terabyte (TB) is used to express which one of the following
approximate measures?:
a)
1,000 bytes of storage
b)
1000,000 bytes of storage
c)
1,000,000,000 bytes of storage
d)
1,000,000,000,000 bytes of storage
3.
In most organizations, massive backup files are most likely to be
archived on:
a)
Semiconductor RAM.
b)
Magnetic tape
c)
CD-ROM
d)
Magnetic diskette
Fill in the Blank Quiz
1). Microcomputers
are the most important category of computer systems for business people and
consumers. This type of computer (
) is designed to support applications with heavy mathematical computing
and graphics display demands such as computer-aided design (CAD) in
engineering.
2. A ( )computer is a middle-size computer that is
capable of supporting the computing needs of smaller organizations or of
managing networks of other computers
3. Network ( ) have become more popular in recent
years due in large part to the development of electronic commerce and other
business uses of the Internet.
4. A
( )is one-billionth of a second:
5. These online
devices ( ) depend on direct
connections or telecommunications links to the central processing unit of a
computer system.
6. These memory
chips ( ) are the most widely
used primary storage medium.
True-False Quiz
1.
Your text discusses the major changes and trends that have occurred
during the major stages or generations
of computers. The fourth generation of computers utilized vacuum tubes for
their processing and memory circuitry. (true or false)
2.
Midrange computers can serve as industrial process-control and
manufacturing plant computers, and they play a major role in computer-aided
manufacturing. (true or false)
3.
One of the major components of the central processing unit (CPU) is the
arithmetic-logic unit. The ALU performs the arithmetic and logic functions
required in computer processing. (true or false)
4.
The major disadvantage of voice computing systems is that they are not
technologically or economically feasible for a variety of applications that
could benefit from this form of input. (true or false)
5.
Magnetic ink character recognition (MICR), is a form of input
technology, which is widely used, in the banking industry. The iron oxide-based
ink can be magnetically read from checks and deposit slips. (true or false)
6.
A byte is a basic grouping of bits that the computer operates as a
single unit. (true or false)
Glossary
Bit: :A contraction of
"binary digit." It can have the value of either 0 or 1
Byte: A sequence of adjacent
binary digits operated on as a unit and usually shorter than a computer word.
In many computer systems, a byte is a grouping of eight bits that can represent
one alphabetic or special character or can be packed with two decimal digits
CD-ROM: An optical disk technology
for microcomputers featuring compact disks with a storage capacity of over 500
megabytes
Central
processing unit: The unit of a computer system that includes the circuits that control
the interpretation and execution of instructions. In many computer systems, the
CPU includes the arithmetic-logic unit, the control unit, and the primary
storage unit
Computer
system: Computer
hardware as a system of input, processing, output, storage, and control
components. Thus a computer system consists of input and output devices,
primary and secondary storage devices, the central processing unit, the control
unit within the CPU, and other peripheral devices
Computer
terminal: Any
input/output device connected by telecommunications links to a computer
Direct
access : A
method of storage where each storage position has a unique address and can be
individually accessed in approximately the same period of time without having
to search through other storage positions. Same as Random Access. Contrast with
Sequential Access.
Floppy
disk: A
small plastic disk coated with iron oxide that resembles a small phonograph
record enclosed in a protective envelope. It is a widely used form of magnetic
disk media that provides a direct access storage capability for microcomputer
systems.
Gigabyte
: One
billion bytes. More accurately, 2 to the 30th power, or 1,073,741,824 in decimal notation.
Information
appliance: Small
Web-enabled microcomputer devices with specialized functions, such as hand-held
PDAs, TV set-top boxes, game consoles, cellular and PCS phones, wired telephone
appliances, and other Web-enabled home appliances.
Magnetic
ink character recognition: The machine recognition of characters printed with magnetic ink.
Primarily used for check processing by the banking industry
Magnetic
tape: A
plastic tape with a magnetic surface on which data can be stored by selective
magnetization of portions of the surface
Megabyte:
One million
bytes. More accurately, 2 to the 20th power, or 1,048,576 in decimal notation
Microcomputer
:A very
small computer, ranging in size from a "computer on a chip" to
hand-held, laptop, and desktop units, and servers.
Microprocessor
:A
microcomputer central processing unit (CPU) on a chip. Without input/ output or
primary storage capabilities in most types.
Midrange
computer: :A
computer category between microcomputers and mainframes. Examples include
minicomputers, network servers, and technical workstations
Network
computer: A low-cost networked microcomputer with no or
minimal disk storage, which depends on Internet or intranet servers for its
operating system and Web browser, Java-enabled application software, and data
access and storage.
Optical
character recognition: The machine identification of
printed characters through the use of lightsensitive devices.
Peripheral
devices: In
a computer system, any unit of equipment, distinct from the central processing
unit, that provides the system with input, output, or storage capabilities.
Personal
digital assistant: Hand-held microcomputer devices that enable you to manage information
such as appointments, to-do lists, and sales contacts, send and receive e-mail,
access the Web, and exchange such information with your desktop PC or network
server
Picosecond : One trillionth of a
second.
Pointing
devices : Devices
that allow end users to issue commands or make choices by moving a cursor on
the display screen
Pointing
stick: A small buttonlike device on a keyboard that
moves the cursor on the screen in the direction of the pressure placed upon it
RAID: Redundant array of independent disks. Magnetic disk
units that house many interconnected microcomputer hard disk drives, thus
providing large, fault-tolerant storage capacities
Speech
recognition: Direct conversion of spoken
data into electronic form suitable for entry into a computer system. Also
called voice data entry
Terabyte: One trillion bytes. More accurately, 2 to the 40th
power, or 1,009,511,627,776 in decimal notation
Touch-sensitive
screen : An
input device that accepts data input by the placement of a finger on or close
to the CRT screen.
Trackball:
A rollerball device set in a case used to move
the cursor on a computer's display screen
Wand
: A
hand-held optical character recognition device used for data entry by many
transaction terminals
Workstation: (1) A computer system designed to support the work of
one person. (2) A high-powered computer to support the work of professionals in
engineering, science, and other areas that require extensive computing power
and graphics capabilities.
