1987
1. The subtraction of a binary number Y from another binary
number X, done by adding 2’s compliment of Y to X, results in a binary number
without overflow. This implies that the result is
a.
Negative and is in normal form
b. Negative an is in 2’s compliment form
c.
Positive and is in normal form
d. Positive and is in 2’s compliment form
Answer: B
1993
1. 2’s complement representation of a 16 bit number (one sign
bit and 15 magnitude bits) is FFFF. Its magnitude in decimal representation is
a.
0
b. 1
c.
32,767
d. 65,535
Answer: B
Solution
: https://www.youtube.com/watch?v=4ZrEe07cDuQ
1998
1. An equivalent 2’s complement representation of the 2’s
complement number is 1101 is
a.
110100
b.
001101
c.
110111
d.
111101
Answer: D
2. Two 2’s complement numbers having sign bits x and y are
added and the sign bit of the result is z. Then, the occurrence of overflow is
indicated by the Boolean function
Answer: C
2001
1. The 2’s complement representation of – 17 is
a.
01110
b.
101111
c.
11110
d.
10001
Answer: B
2002
1. 4 – bit 2’s complement representation of a decimal number is
1000. The number is
a.
+8
b.
0
c.
-7
d.
-8
Answer: D
2004
1. The range of signed decimal numbers that can be represented
by 6 bit 1’s complement form is
a.
-31 to +31
b.
-63 to +64
c.
-64 to +63
d.
-32 to +31
Answer: A
Solution : https://www.youtube.com/watch?v=0mvda9-_j6Y
2. 11001, 1001 and 111001 correspond to the 2’s complement
representation of which one of the following sets of number?
a.
25, 9 and 57 respectively
b.
-6, -6 and -6 respectively
c.
-7, -7 and -7 respectively
d.
-25, -9 and -57 respectively
Answer: C
Solution : https://www.youtube.com/watch?v=prvoIVvnID4
2005
1. Decimal 43 in Hexadecimal and BCD number system is
respectively
a.
B2, 0100 0011
b.
2B, 0100 0011
c.
2B, 0011 0100
d.
B2, 0100 0100
Answer: B
Solution : https://www.youtube.com/watch?v=5-6JKj9bNzI
2006
1. A new Binary Coded Pentary (BCP) number system is proposed
in which every digit of a base-5 number is represented by its corresponding
3-bit binary code. For example, the base-5 number 24 will be represented by its
BCP code 010100. In this number system, the BCP code 100010011001 corresponds
to the following number in base-5 system
a.
423
b.
1324
c.
2201
d.
4231
Answer: D
2007
1. X = 01110 and Y = 11001 are two 5 bit binary numbers
represented in 2’s compliement format. The sum of X and Y represented in 2’s
compliment format using 6 bits is
a.
100111
b.
001000
c.
000111
d.
101001
Answer: C
2008
1. The two numbers represented in signed 2’s compliment form
are P = 11101101 and Q = 11100110. If Q is subtracted from P, the value
obtained in signed 2’s compliment form is
a.
100000111
b.
00000111
c.
11111001
d.
111111001
Answer: B
2014 (from all 4 sets)
1. The number of bytes required to represent the decimal number
1856357 in packed BCD (Binary Coded Decimal) form is ………….
Answer: 4
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