Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Two kinds of data selectors are ________ and ________.
A) comparators, registers
B) encoders, decoders
C) adders, subtractors
D) multiplexers, demultiplexers
1)
Answer: D
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
2) A waveform that repeats itself at fixed intervals is called a periodic waveform.
Answer:
Diff: 0
True
Type: TF
2)
False
3) Parallel data is sent along a single conductor, one bit at a time.
Answer:
Diff: 0
True
Type: TF
3)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
4) Which one of the following is not a surface-mount IC package?
A) SOIC
B) DIP
C) FP
D) PLCC
4)
Answer: B
Diff: 0
Type: MC
5) The arrow in the figure below points to pin number ________.
A) 13
B) 4
C) 12
Answer: D
Diff: 0
Type: MC
1
5)
D) 5
Figure 1-1
6) Which edge in Figure 1-1 is the trailing edge?
A) 1
B) 2
C) 3
D) Both 1 and 3
6)
Answer: C
Diff: 0
Type: MC
7) The output from an AND gate is LOW ________.
A) when at least one input is LOW
C) only when all inputs are HIGH
B) only when all inputs are LOW
D) none of the above
7)
Answer: A
Diff: 0
Type: MC
Figure 1-3
8) The symbol in Figure 1-3(A) represents the ________ function.
A) AND
B) NOT
C) OR
D) AND/OR
8)
Answer: A
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
9) When the inputs to a 2-input AND gate are both HIGH, the output is HIGH.
Answer:
Diff: 0
True
Type: TF
9)
False
10) A demultiplexer is sometimes called a mux.
Answer:
Diff: 0
True
Type: TF
10)
False
11) The DIP package style has two parallel rows of through-hole pins.
Answer:
Diff: 0
True
Type: TF
11)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
12) Which one of the circuits listed is made up of flip-flops?
A) A converter
B) A multiplexer
C) A comparator
Answer: D
Diff: 0
Type: MC
2
D) A register
12)
13) The transition times for an ideal digital pulse are ________.
A) measured between 0 and 90% of the amplitude
B) measured between 10% to 90% of the amplitude
C) zero
D) infinite
13)
Answer: C
Diff: 0
Type: MC
14) Which IC package style has no leads?
A) LCCC
C) PLCC
14)
B) SOIC
D) All must have leads.
Answer: A
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
15) When the input to a logic inverter is HIGH, the output is LOW.
Answer:
Diff: 0
True
Type: TF
15)
False
16) When both inputs to a 2-input OR gate are both LOW, the output is LOW.
Answer:
Diff: 0
True
Type: TF
16)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
17) On a positive-logic pulse, the trailing edge is the ________.
A) LOW-to-HIGH transition
B) rising edge
C) falling edge
D) positive-going edge
17)
Answer: C
Diff: 0
Type: MC
18) Which circuit converts coded information into a noncoded form?
A) Comparator
B) Encoder
C) Decoder
D) Multiplexer
18)
Answer: C
Diff: 0
Type: MC
19) On a negative-going pulse, the leading edge is the ________.
A) rising edge
B) negative-going edge
C) LOW-to-HIGH transition
D) positive-going edge
Answer: B
Diff: 0
Type: MC
3
19)
Figure 1-1
20) Which edge in Figure 1-1 is the leading edge?
A) 1
B) 2
C) 3
D) Both 1 and 3
20)
Answer: A
Diff: 0
Type: MC
21) On a positive-going pulse, the leading edge is the ________.
A) positive-going edge
B) HIGH-to-LOW transition
C) falling edge
D) negative-going edge
21)
Answer: A
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
22) The values of an analog signal flow smoothly from one to the next.
Answer:
Diff: 0
True
Type: TF
22)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Figure 1-3
23) The symbol in Figure 1-3(B) represents the ________ function.
A) AND
B) XOR
C) OR
D) NON
23)
Answer: C
Diff: 0
Type: MC
24) On a digital waveform, the transition time from a LOW level to a HIGH level is called ________.
A) rise time
B) period
C) pulse width
D) fall time
24)
Answer: A
Diff: 0
Type: MC
Figure 1-1
25) The time between transition 1 and transition 3 in Figure 1-1 is the ________.
A) frequency
B) amplitude
C) period
Answer: D
Diff: 0
Type: MC
4
D) pulse width
25)
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
26) A multiplexer converts parallel data to serial data.
Answer:
Diff: 0
True
Type: TF
26)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
27) A circuit that converts an digital signal to an analog waveform is commonly called a(n) ________.
A) ADC
B) CAD
C) DAC
D) PLD
27)
Answer: C
Diff: 0
Type: MC
Figure 1-4
28) The package style in Figure 1-4(A) is a(n) ________.
A) SOIC
B) PLCC
C) LCCC
D) FP
C) LCCC
D) FP
28)
Answer: A
Diff: 0
Type: MC
29) The package style in Figure 1-4(C) is a(n) ________.
A) SOIC
B) PLCC
29)
Answer: C
Diff: 0
Type: MC
30) Which circuit converts data from serial form to parallel form?
A) Demultiplexer
B) Multiplexer
C) Encoder
D) Comparator
30)
Answer: A
Diff: 0
Type: MC
31) The final step in the PLD programming process is ________.
A) design entry
B) compilation
C) synthesis
Answer: D
Diff: 0
Type: MC
5
D) download
31)
Figure 1-2
32) Item (4) of the nonideal pulse in Figure 1-2 represents the waveform ________.
A) amplitude
B) rise time
C) fall time
D) pulse width
32)
Answer: C
Diff: 0
Type: MC
33) Which of the following is an example of a mechatronics system?
A) A laptop computer
B) An industrial robot
C) A surgical laser
D) None of the above
33)
Answer: B
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
34) Digital systems respond to voltage levels that change abruptly between two levels (high and low).
Answer:
Diff: 0
True
Type: TF
False
35) A sinusoidal waveform is an analog signal.
Answer:
Diff: 0
True
Type: TF
35)
False
36) Serial data is sent along a single conductor, one bit at a time.
Answer:
Diff: 0
True
Type: TF
34)
False
6
36)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Figure 1-2
37) Item (3) of the nonideal pulse in Figure 1-2 represents the waveform ________.
A) amplitude
B) rise time
C) fall time
D) pulse width
37)
Answer: D
Diff: 0
Type: MC
38) A periodic digital waveform ________.
A) has both a HIGH and LOW levels
C) has a duty cycle
B) repeats itself at a fixed interval
D) all of the above
38)
Answer: D
Diff: 0
Type: MC
39) The first step in the PLD programming process is ________.
A) design entry
B) compilation
C) synthesis
D) download
39)
Answer: A
Diff: 0
Type: MC
Figure 1-4
40) The package style in Figure 1-4(B) is a(n) ________.
A) SOIC
B) PLCC
C) LCCC
D) FP
40)
Answer: B
Diff: 0
Type: MC
41) The output from an OR gate is HIGH ________.
A) only when all inputs are LOW
C) when at least one input is HIGH
B) only when all inputs are HIGH
D) none of the above
Answer: C
Diff: 0
Type: MC
7
41)
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
42) The FPGA is a fixed-function device.
Answer:
Diff: 0
True
Type: TF
42)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
43) On a digital waveform, the transition time from a HIGH level to a LOW level is called ________.
A) period
B) pulse width
C) rise time
D) fall time
43)
Answer: D
Diff: 0
Type: MC
Figure 1-2
44) Item (1) of the nonideal pulse in Figure 1-2 represents the waveform ________.
A) period
B) amplitude
C) pulse width
D) transition time
44)
Answer: B
Diff: 0
Type: MC
45) What is the duty cycle of a digital waveform with a pulse width of 10 ms a period of 90 ms?
A) 90%
B) 10%
C) 11.1%
D) 9%
45)
Answer: C
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
46) Encoders and decoders perform opposite conversions.
Answer:
Diff: 0
True
Type: TF
False
47) Digital data can be processed and transmitted more efficiently and reliably than analog
information.
Answer:
Diff: 0
True
Type: TF
46)
False
8
47)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
48) The time from one leading edge on a digital waveform to the next is the waveform ________.
A) period
B) rise time
C) pulse width
D) fall time
48)
Answer: A
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
49) The field that comprises both mechanical and electronic components is known as
electro-mechanics.
Answer:
Diff: 0
True
Type: TF
49)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Figure 1-3
50) The symbol in Figure 1-3(C) represents the ________ function.
A) OR
B) AND
C) XOR
D) NOT
50)
Answer: D
Diff: 0
Type: MC
51) Which circuit converts information into a specific coded form?
A) Comparator
B) Encoder
C) Decoder
D) Multiplexer
51)
Answer: B
Diff: 0
Type: MC
52) The output from an AND gate is HIGH when ________.
A) one input is LOW and the remaining inputs are HIGH
B) one input is HIGH and the remaining inputs are LOW
C) all inputs are HIGH
D) all inputs are LOW
52)
Answer: C
Diff: 0
Type: MC
53) The output from an OR gate is LOW ________.
A) whenever any input is HIGH
C) only when all inputs are LOW
B) only when all inputs are HIGH
D) none of the above
Answer: C
Diff: 0
Type: MC
9
53)
54) An oscilloscope display indicates that the period of a digital waveform is 40 µs. What is frequency
of this waveform?
A) 25 kHz
B) 2.5 kHz
C) 40 MHz
D) The frequency cannot be determined using the information provided.
54)
Answer: A
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
55) The binary number system uses just two symbols.
Answer:
Diff: 0
True
Type: TF
55)
False
56) A flip-flop is a 1-bit storage device.
Answer:
Diff: 0
True
Type: TF
56)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
57) On a negative-logic pulse, the trailing edge is the ________.
A) falling edge
B) negative-going edge
C) HIGH-to-LOW transition
D) positive-going edge
57)
Answer: D
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
58) The PLCC package has J-type leads on all four edges.
Answer:
Diff: 0
True
Type: TF
58)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
59) Which one of the following is not a binary arithmetic function?
A) Multiplexing
B) Division
C) Subtraction
D) Addition
59)
Answer: A
Diff: 0
Type: MC
60) Which circuit creates an output that indicates whether or not the input values are equal?
A) Comparator
B) Encoder
C) Decoder
D) Multiplexer
60)
Answer: A
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
61) When either input to a 2-input OR gate is HIGH, the output is HIGH.
Answer:
Diff: 0
True
Type: TF
False
10
61)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
62) On a negative-going pulse, ________.
A) HIGH = 0 and LOW = -1
C) LOW = -1 and HIGH = 1
B) HIGH = 0 and LOW = 1
D) HIGH = 1 and LOW = 0
62)
Answer: B
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
63) The clock signal synchronizes the other waveforms in a circuit.
Answer:
Diff: 0
True
Type: TF
63)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
64) When data is set along a single conductor, it is referred to as ________.
A) parallel data
B) simultaneous data
C) serial data
D) none of these
64)
Answer: C
Diff: 0
Type: MC
65) The netlist is generated during the ________ phase of the PLD programming process.
A) design entry
B) compilation
C) synthesis
D) download
65)
Answer: C
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
66) The decimal number system uses nine different symbols.
Answer:
Diff: 0
True
Type: TF
66)
False
67) The flat-pack (FP) IC package style is a surface-mount device.
Answer:
Diff: 0
True
Type: TF
67)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
68) The arrow in the figure below points to pin ________.
A) 4
B) 5
C) 17
Answer: C
Diff: 0
68)
Type: MC
11
D) 16
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
69) Clock signals carry pieces of information such as letters and numbers.
Answer:
Diff: 0
True
Type: TF
69)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
70) The approximate duty cycle for the digital waveform below is ________.
A) 30%
B) 80%
C) 20%
70)
D) 50%
Answer: C
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
71) When either input to a 2-input AND gate is LOW, the output is LOW.
Answer:
Diff: 0
True
Type: TF
71)
False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
72) Of the circuits listed, the one that is most likely to be found in a CD player is a(n) ________.
A) programmable logic device
B) SPLD
C) digital-to-analog converter
D) analog-to-digital converter
72)
Answer: C
Diff: 0
Type: MC
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
73) The amplitude of a digital waveform is the difference in voltage between the LOW and HIGH
levels.
Answer:
Diff: 0
True
Type: TF
False
12
73)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Figure 1-2
74) Item (2) of the nonideal pulse in Figure 1-2 represents the waveform ________.
A) amplitude
B) rise time
C) fall time
D) pulse width
74)
Answer: B
Diff: 0
Type: MC
75) A circuit that converts an analog waveform to a digital signal is commonly called a(n) ________.
A) ADC
B) CAD
C) PLD
D) DAC
Answer: A
Diff: 0
Type: MC
13
75)
Answer Key
Testname: CH1
1) D
2) TRUE
3) FALSE
4) B
5) D
6) C
7) A
8) A
9) TRUE
10) FALSE
11) TRUE
12) D
13) C
14) A
15) TRUE
16) TRUE
17) C
18) C
19) B
20) A
21) A
22) TRUE
23) C
24) A
25) D
26) TRUE
27) C
28) A
29) C
30) A
31) D
32) C
33) B
34) TRUE
35) TRUE
36) TRUE
37) D
38) D
39) A
40) B
41) C
42) FALSE
43) D
44) B
45) C
46) TRUE
47) TRUE
48) A
49) FALSE
50) D
14
Answer Key
Testname: CH1
51) B
52) C
53) C
54) A
55) TRUE
56) TRUE
57) D
58) TRUE
59) A
60) A
61) TRUE
62) B
63) TRUE
64) C
65) C
66) FALSE
67) TRUE
68) C
69) FALSE
70) C
71) TRUE
72) C
73) TRUE
74) B
75) A
15