Digital System Design (Mc1406) Quiz 2
- 1.Express the decimal number –37 as an 8-bit number in sign-magnitude.
- A.
10100101
- B.
00100101
- C.
11011000
- D.
11010001
- 2.
Derive the Boolean expression for the logic circuit shown below: Which one do you like?- A.
C(A+B)DE
- B.
[C(A+B)D+E
- C.
[[C(A+B)D]E]
- D.
ABCDE
- 3.If a 3-input NOR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?
- A.
1
- B.
2
- C.
7
- D.
8
- 4.Convert the binary number 1001.00102 to decimal
- A.
90.125
- B.
9.125
- C.
125
- D.
12.5
- 5.What is the function of an enable input on a multiplexer chip?
- A.
to apply Vcc
- B.
To connect ground
- C.
To active the entire chip
- D.
To active one half of the chip
- 6.How many inputs are required for a 1-of-10 BCD decoder?
- A.
4
- B.
8
- C.
10
- D.
1
- 7.Select the statement that best describes the parity method of error detection.
- A.
Parity checking is best suited for detecting double bit errors that occur during the transmission of codes from one location to another
- B.
Parity checking is not suitable for detecting single bit errors in transmitted codes.
- C.
Parity checking is best suitable for detecting single bit errors in transmitted codes.
- D.
Parity checking is capable of detecting and correcting errors in transmitted codes.
- 8.Which statement below best describes a Karnaugh map?
- A.
A Karnaugh map can be used to replace Boolean rules.
- B.
The Karnaugh map eliminates the need for using NAND and NOR gates.
- C.
Variable complements can be eliminated by using Karnaugh maps.
- D.
Karnaugh maps provide a cookbook approach to simplifying Boolean expressions.
- 9.Which of the examples below expresses the distributive law of Boolean algebra?
- A.
(A + B) + C = A + (B + C)
- B.
A(B + C) = AB + AC
- C.
A + (B + C) = AB + AC
- D.
A(BC) = (AB) + C
- 10.How many 2-input NOR gates does it take to produce a 2-input NAND gate?
- A.
1
- B.
2
- C.
3
- D.
4
Questions: 8 | Attempts: 169 | Last updated: Mar 17, 2022
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