Chapter 1 Introduction to Computers, Programs, and Java
Section 1.2 What is a Computer?
1. is the physical aspect of the computer that can be seen.
a. Hardware
b. Software
c. Operating system
d. Application program
Key:a See the first paragraph in Section 1.2.
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Section 1.2.1 What is a Computer?
2. is the brain of a computer.
a. Hardware
b. CPU
c. Memory
d. Disk
Key:b See the first paragraph in Section 1.2.1.
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3. The speed of the CPU may be measured in .
a. megabytes
b. gigabytes
c. megahertz
d. gigahertz
Key:cd See the third paragraph in Section 1.2.1. 1 megahertz equals 1 million pulses per second and 1 gigahertz is
1000 megahertz.
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Section 1.2.2 Bits and Bytes
4. Why do computers use zeros and ones?
a. because combinations of zeros and ones can represent any numbers and characters.
b. because digital devices have two stable states and it is natural to use one state for 0 and the other for 1.
c. because binary numbers are simplest.
d. because binary numbers are the bases upon which all other number systems are built.
Key:b See the second paragraph in Section 1.2.2.
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5. One byte has bits.
a. 4
b. 8
c. 12
d. 16
Key:b See the thrid paragraph in Section 1.2.2.
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5. One gigabyte is approximately bytes.
a. 1 million
b. 10 million
c. 1 billion
d. 1 trillion
Key:c See the fifth paragraph in Section 1.2.2.
© 2020 Pearson Education, Inc., Hoboken, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist.
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Section 1.2.3 Memory
6. A program and its data must be moved into the computer's before they can be executed by the CPU.
a. memory
b. hard disk
c. CPU
d. CD-ROM
Key:a See the first paragraph in Section 1.2.3.
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Section 1.2.4 Storage Devices
6. A computer's is volatile; that is, any information stored in it is lost when the system's power is turned off.
a. memory
b. hard disk
c. flash stick
d. CD-ROM
Key:a See the first paragraph in Section 1.2.4.
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6. Which of the following are storage devices?
a. portable disk
b. hard disk
c. flash stick
d. CD-ROM
Key:abcd See the second paragraph in Section 1.2.4.
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Section 1.2.5 Input and Output Devices
7. The specifies the number of pixels in horizontal and vertical dimensions of the display device.
a. screen resolution
b. pixel
c. dot pitch
d. monitor
Key:a See the third last paragraph in Section 1.2.5.
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Section 1.2.6 Communications Devices
7. is a device to connect a computer to a local area network (LAN).
a. Regular modem
b. DSL
c. Cable modem
d. NIC
Key:d See the bullet items in Section 1.2.6.
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Section 1.3 Program Languages
8. are instructions to the computer.
a. Hardware
b. Software
c. Programs
d. Keyboards
Key:bc See the Key Point in Section 1.3.
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© 2020 Pearson Education, Inc., Hoboken, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist.
Section 1.2 What is a Computer?
1. is the physical aspect of the computer that can be seen.
a. Hardware
b. Software
c. Operating system
d. Application program
Key:a See the first paragraph in Section 1.2.
#
Section 1.2.1 What is a Computer?
2. is the brain of a computer.
a. Hardware
b. CPU
c. Memory
d. Disk
Key:b See the first paragraph in Section 1.2.1.
#
3. The speed of the CPU may be measured in .
a. megabytes
b. gigabytes
c. megahertz
d. gigahertz
Key:cd See the third paragraph in Section 1.2.1. 1 megahertz equals 1 million pulses per second and 1 gigahertz is
1000 megahertz.
#
Section 1.2.2 Bits and Bytes
4. Why do computers use zeros and ones?
a. because combinations of zeros and ones can represent any numbers and characters.
b. because digital devices have two stable states and it is natural to use one state for 0 and the other for 1.
c. because binary numbers are simplest.
d. because binary numbers are the bases upon which all other number systems are built.
Key:b See the second paragraph in Section 1.2.2.
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5. One byte has bits.
a. 4
b. 8
c. 12
d. 16
Key:b See the thrid paragraph in Section 1.2.2.
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5. One gigabyte is approximately bytes.
a. 1 million
b. 10 million
c. 1 billion
d. 1 trillion
Key:c See the fifth paragraph in Section 1.2.2.
© 2020 Pearson Education, Inc., Hoboken, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist.
, #
Section 1.2.3 Memory
6. A program and its data must be moved into the computer's before they can be executed by the CPU.
a. memory
b. hard disk
c. CPU
d. CD-ROM
Key:a See the first paragraph in Section 1.2.3.
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Section 1.2.4 Storage Devices
6. A computer's is volatile; that is, any information stored in it is lost when the system's power is turned off.
a. memory
b. hard disk
c. flash stick
d. CD-ROM
Key:a See the first paragraph in Section 1.2.4.
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6. Which of the following are storage devices?
a. portable disk
b. hard disk
c. flash stick
d. CD-ROM
Key:abcd See the second paragraph in Section 1.2.4.
#
Section 1.2.5 Input and Output Devices
7. The specifies the number of pixels in horizontal and vertical dimensions of the display device.
a. screen resolution
b. pixel
c. dot pitch
d. monitor
Key:a See the third last paragraph in Section 1.2.5.
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Section 1.2.6 Communications Devices
7. is a device to connect a computer to a local area network (LAN).
a. Regular modem
b. DSL
c. Cable modem
d. NIC
Key:d See the bullet items in Section 1.2.6.
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Section 1.3 Program Languages
8. are instructions to the computer.
a. Hardware
b. Software
c. Programs
d. Keyboards
Key:bc See the Key Point in Section 1.3.
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© 2020 Pearson Education, Inc., Hoboken, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist.
