Ch. 1 Computer Concepts

question

The digital revolution became a significant factor in the 1980s but ended in the 1990s when the “dot com” bubble burst.
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False
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The first digital computer was developed for conducting the census.
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False
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Facebook and Twitter are examples of social networking options.
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True
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Privacy advocates fear that digital technologies are fundamentally changing our expectation of what is private and what is not.
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True
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Prior to 1940, the word computer was defined as a person who performs calculations.
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True
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An operating system is an example of application software.
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True
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Because of increased versatility, a videogame console is now considered a personal computer.
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False
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The purpose of a server is to serve computers on a network.
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True
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In the binary number system, 2 is used to represent the value 2.
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False
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The number 9 can be considered a character.
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True
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Because most digital devices are electronic, bits take the form of electrical pulses.
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False
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Semiconductor materials are substances with properties between those of a conductor and an insulator.
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True
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A compiler like the one shown in the accompanying figure converts all statements in a program to machine language in a single batch.
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True
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The op code in a machine language instruction specifies the data.
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False
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The operand is a command word for an operation.
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False
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All computers are case sensitive.
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False
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Trojans are computer programs that seem to perform one function while actually doing something else.
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True
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You should always use a different password for every account.
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False
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The first digital computers were built during World War II for ____.
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code breaking
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When restrictions on commercial use of the ____ were lifted in 1995, companies such as AOL and CompuServe became popular services.
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internet
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An area of a computer that temporarily holds data waiting to be processed is ____.
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memory
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A set of computer programs that helps a computer monitor itself and function more efficiently is ____.
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system software
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The master controller for all activities that take place within a computer is ____.
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the operating system
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A powerful desktop computer used for high-performance tasks is a ____.
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mainframe
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A compute-intensive problem runs on a ____.
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supercomputer
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The type of code that uses only seven bits for each character is ____.
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ASCII
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The type of code that uses eight bits for each character is ____.
answer

Extended ASCII
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Storage is typically expressed as ____.
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bytes
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1,048,576 bytes is a ____.
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megabyte
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The ____ houses all essential chips and provides connecting circuitry between them.
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system board
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A collection of preprogrammed activities such as addition, subtraction, counting, and comparison is called a(n) ____.
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instruction set
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The ____ from an instruction specifies the data.
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operand
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The accompanying figure represents the instruction cycle. The first step is Box A and represents the ____.
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fetch instruction
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The accompanying figure represents the instruction cycle. The third step is Box C and represents the ____.
answer

execute instruction
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The accompanying figure represents the instruction cycle. The fourth step is Box D and represents the ____.
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increment pointer
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A problem a hacker can cause after breaking into your computer might be ____.
answer

all of the above
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Password management functions include all of the following EXCEPT ____.
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recording keystrokes
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Jim has just purchased a new computer and it has made him think about how it works. He is particularly interested in how information is processed and stored in his computer. He has come to you for help. Jim knows that a collection of preprogrammed activities is an instruction set. He wants to know what an instruction set is designed to do. You tell him it is designed to ____.
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allow programmers to use them in creative ways for multiple task
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Storage
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The area where data can be left on a permanent basis when it is not immediately needed for processing
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download
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The practice of copying a file from a remote computer to a local computer
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authentication protocol
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Any method that confirms a person’s identity
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Memory
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An area of the computer that temporarily holds data waiting to be processed, stored, or output
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unicode
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Provides codes for 65,000 characters
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microchip
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Another name for integrated circuit
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ALU
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Part of the microprocessor that performs arithmetic operations
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control unit
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Fetches each instruction
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case sensitive
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Differentiates between uppercase and lowercase words
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identity theft
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Unauthorized use and access to personal data
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password manager
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Stores user IDs with their corresponding password
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source code
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Human-readable version of a program

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