WorksheetsKNR 1063 Digital Electronics Quiz 1
Total questions: 15
Worksheet time: 25mins
Name
Class
Date
1.
What kind of logic device or circuit is used to store information?
a)
Counter
b)
Inverter
c)
Register
d)
Buffer
2.
Which of the following is the most widely used alphanumeric code for computer input and output?
a)
Gray
b)
EBCDIC
c)
ASCII
d)
Parity
3.
The voltages in digital electronics are continuously variable.
a)
True
b)
False
4.
Which is typically the longest: bit, byte, nibble, word?
a)
Bit
b)
Byte
c)
Nibble
d)
Word
5.
What decimal number does 25 represent?
a)
10
b)
31
c)
25
d)
32
6.
What are the symbols used to represent digits in the binary number system?
a)
0,1
b)
0 through 8
c)
0,1,2
d)
1,2
7.
What is the difference between binary coding and binary-coded decimal?
a)
BCD is pure binary.
b)
BCD has no decimal format.
c)
Binary coding is pure binary.
d)
Binary coding has a decimal format.
8.
The output of an AND gate is LOW ________.
a)
all the time
b)
when any input is HIGH
c)
when all inputs are HIGH
d)
when any input is LOW
9.
Convert binary 111111110010 to hexadecimal.
a)
EE216
b)
FF216
c)
2FE16
d)
FF216
10.
Convert 59.7210 to BCD.
a)
111011
b)
1110.11
c)
01011001.01110010
d)
0101100101110010
11.
The output of an AND gate with three inputs, A, B, and C, is HIGH when ________.
a)
A = 1, B = 1, C = 0
b)
A = 1, B = 1, C = 1
c)
A = 0, B = 0, C = 0
d)
A = 1, B = 0, C = 1
12.
Which of the following expressions is in the sum-of-products (SOP) form?
a)
(A + B)(C + D)
b)
AB(CD)
c)
(A)B(CD)
d)
AB + CD
13.
Derive the Boolean expression for the logic circuit shown below:
a)
C(A+B)DE
b)
[C(A+B)D]E'
c)
[C(A+B)D+E']
d)
ABCDE
14.
For a 3-input NAND gate, with the input waveforms as shown below, which output waveform is correct?
a)
a
b)
b
c)
c
d)
d
15.
Which step in this reduction process is using DeMorgan's theorem?
a)
STEP 1
b)
STEP 2
c)
STEP 3
d)
STEP 4
100 %
