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Let's practice 30 mcqs on
Number Systems and Codes
mcqs by everyone
Convert the following octal number tobinary.
768
1111002
1111102
1001112
1101112
The decimal number –128 is represented in the signed 2's complement system as ________
1111 1111
1111 1110
1000 0000
0111 1111
The binary number 1110 is equal to the decimal number ________
7
1
14
3
________ symbols are needed to represent all digits in hexadecimal
Twelve
Ten
Sixteen
Six
A binary number's value changes most drastically when the ________ is changed
Frequency
duty cycle
LSB
MSB
The decimal equivalent of the BCD number 1010 is ________
12
10
8
Invalid
Decimal 12 is ________ in hexadecimal
A16
A216
1216
C16
Convert decimal 64 to binary
00110110
01001000
01000000
01010010
Convert the following BCD number todecimal.
100000000011bcd
1003
103
803
8003
Convert 8B3F16 to binary
1011001111100011
011010
1000101100111111
35647
When using the repeated division by 2 method of converting from decimal to binary, one must write the first remainder as the
MSB
LSB
Which of the following is the most widely used alphanumeric code for computer input and output
EBCDIC
Parity
Gray
ASCII
An informational signal that makes use of binary digits is considered to be
non-oscillating
Digital
solid state
Analog
The base of the hexadecimal system is
eight.
ten.
two.
sixteen.
The sum of the two BCD numbers, 0011 + 0011, is ________
0111
0011
1100
0110
Convert hexadecimal C0B to binary
110000001100
110100001011
110000001011
110000001001
Each hexadecimal digit converts to ________ binary digits
eight
Six
12
Four
Which is not a word size
16
28
64
8
Even-parity 01101000 binary is ________in hexadecimal
D016
C816
6816
Nothing. Parity does not check.
The binary number 101110101111010 can be written in octal as ________
515628
565778
656278
565728
Binary 10111111 is ________ in hexadecimal
BF16
FB16
10111111
27716
Convert binary 11001111 to hexadecimal
CF16
DF16
CE16
8F16
Convert the following decimal number tohexadecimal.
74
4B16
A416
4A16
B416
A complete alphanumeric code would include 26 lowercase letters, 26 uppercase letters, 10 numeric digits, 7 punctuation marks, and anywhere from ________ to ________ other characters
10, 15
20, 40
5, 10
10, 20
Convert the following binary number tooctal.
0101111002
1748
2728
2748
1728
Convert the following decimal number tohexadecimal.
125
7D16
7C16
D716
C716
The largest BCD number that can be represented with four binary bits is ________
15
10
16
9
Convert the following hexadecimal number tobinary.
C916
101110112
100111002
101110012
110010012
Convert the following hexadecimal number todecimal.
B516
212
165
181
197
Convert the following octal number todecimal.
358
71
17
92
29
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