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Digital Electronics
‣
MSI Logic Circuits
Comments
Question
The diagram given below shows a ________ being used as a(n) ________ and
Y
= ________.
Options
A. multiplier, divider, 2.25
B. multiplexer, encoder, 7641
C. multiplexer, logic function generator,
ABC
+
ABC
+
ABC
+
ABC
D. logic function generator, multiplexer, 1467
Correct Answer
multiplexer, logic function generator,
ABC
+
ABC
+
ABC
+
ABC
MSI Logic Circuits problems
Search Results
1. For the inputs shown in the given figure, the output is ________.
Options
A. 1
B. 0
Show Answer
Scratch Pad
Discuss
Correct Answer: 0
2. An everyday illustration of a multiplexer is ________.
Options
A. the volume control in a stereo receiver
B. the function switch on a stereo receiver
C. the balance control on a stereo receiver
D. the treble-bass control on a stereo receiver
Show Answer
Scratch Pad
Discuss
Correct Answer: the function switch on a stereo receiver
3. When data input
I
6
of a 74148 octal-to-binary encoder is active, the data output is ________.
Options
A.
B.
C.
D.
Show Answer
Scratch Pad
Discuss
Correct Answer:
4. The circuit shown below is a(n) ________.
Options
A. 4-bit magnitude comparator
B. 4-bit half adder
C. 8-bit comparator
D. 8-bit binary adder
Show Answer
Scratch Pad
Discuss
Correct Answer: 4-bit magnitude comparator
5. A(n) ________ display controls the reflection of available light.
Options
A. MOS
B. LCD
C. LED
D. LSC
Show Answer
Scratch Pad
Discuss
Correct Answer: LCD
6. The diagram given below shows a ________, and in order for the decimal number 3 to be displayed, terminals ________ must be ________.
Options
A. common-cathode seven-segment display, ef, LOW
B. common-anode seven-segment display, abcdg, HIGH
C. common-anode seven-segment display, abcdg, LOW
D. common-cathode seven-segment display, abcdg, HIGH
Show Answer
Scratch Pad
Discuss
Correct Answer: common-anode seven-segment display, abcdg, LOW
7. The 74139 dual four-line demultiplexer functions as a decoder if ________.
Options
A. the
line is grounded
B. data input is on the
line
C. data input is on the
A
0
line
D. the
A
0
line is grounded
Show Answer
Scratch Pad
Discuss
Correct Answer: the
line is grounded
8. An eight-line multiplexer must have as inputs ________.
Options
A. four data inputs and three select inputs
B. eight data inputs and two select inputs
C. eight data inputs and three select inputs
D. eight data inputs and four select inputs
Show Answer
Scratch Pad
Discuss
Correct Answer: eight data inputs and three select inputs
9. In an AHDL BCD to binary coded converter, multiplication by 10 is performed by ________.
Options
A. a multiplication operator
B. shifting bits
C. a library function
D. a variable type
Show Answer
Scratch Pad
Discuss
Correct Answer: a multiplication operator
10. The normal outputs of a magnitude comparator are ________.
Options
A.
A
<
B
,
A
=
B
, and
A
>
B
B. Sum, difference, and carry
C. C
in
, C
out
, and Sum
D.
A
=
B
,
A
+
B
, and carry
Show Answer
Scratch Pad
Discuss
Correct Answer:
A
<
B
,
A
=
B
, and
A
>
B
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