Physical Science: Electricity and Magnetism, Book N

Chapter 3: Electronics and Computers

Electronics and Computers

1.
A changing electric current that carries information is a(n) __________.
A)direct current
B)alternating current
C)electronic signal
D)magnetic tape
2.
If the base ten number 15 is written 1111 in the binary system, how would it be written in base 5?
A)11
B)10
C)30
D)111
3.
A(n) __________ is a semiconductor device that allows current to flow in only one direction.
A)transistor
B)chip
C)diode
D)integrated circuit
4.
Which of the following is a type of electronic signal?
A)binary
B)integrated
C)diode
D)analog
5.
Which of the following is NOT a solid-state component?
A)diode
B)transistor
C)vacuum tube
D)integrated circuit
6.
Which of the following statements about computer information storage is correct?
A)Information on a hard disk is stored magnetically.
B)Information on a hard disk is stored with electronic switches.
C)Information stored in ROM is lost when the computer is turned off.
D)Information stored on a hard disk can only be read and not changed.
7.
What is the base ten equivalent of the binary number 1100100?
A)1,200
B)100
C)128
D)13
8.
A computer's temporary memory is called __________.
A)a hard disk
B)RAM
C)C++
D)ROM
9.
Which of the following is an analog device?
A)digital watch
B)CD player
C)television
D)computer
10.
Which of the following elements is a semiconductor?
A)silicon
B)strontium
C)sodium
D)selenium
11.
Which of the following statements about analog signals is true?
A)Analog signals cannot be used to record music.
B)Analog signals vary smoothly with time.
C)Analog signals can have only certain values.
D)Analog signals cannot be converted to digital signals.
12.
Early televisions and radios were larger than their modern versions because they used __________.
A)vacuum tubes
B)semiconductors
C)silicon
D)transistors
13.
An analog signal is created by __________.
A)digitization
B)a binary number series
C)a computer
D)an analog device
14.
Which of the following storage methods is used for information that can be read only and not changed?
A)RAM
B)ROM
C)hard disk
D)floppy disk
15.
Which of the following is NOT computer hardware?
A)word processing program
B)microprocessor
C)keyboard
D)hard disk drive
16.
A(n) __________ is a device that contains three layers of semiconductors and can be used as an electronic switch.
A)transistor
B)binary
C)analog
D)diode
17.
Which of the following base two numbers is equal to the base ten number 13?
A)310
B)1110
C)221
D)1101
18.
A number that is expressed using only the digits 0 and 1 is called __________.
A)a prime number
B)a binary number
C)a base ten number
D)binumeric
19.
A(n) __________ is a series of instructions that tell the computer how to do a job.
A)program
B)hard disk
C)integrated circuit
D)CPU
20.
Information stored in computers must be converted to a(n) __________.
A)analog signal
B)program
C)digital signal
D)hardware component
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