# ISRO CSE 2015

 Question 1
Which of the given number has its IEEE-754 32-bit floating point representation as (0 10000000 110 0000 0000 0000 0000 0000)
 A 2.5 B 3 C 3.5 D 4.5
Digital Logic   Number System
Question 1 Explanation:
 Question 2
The range of integers that can be represented by an n bit 2's complement number system is:
 A $-2^{n-1} \text { to }\left(2^{n-1}-1\right)$ B $-\left(2^{n-1}-1\right) \text { to }\left(2^{n-1}-1\right)$ C $-2^{n-1} \text { to } 2^{n-1}$ D $-\left(2^{n-1}+1\right) \text { to }\left(2^{n-1}-1\right)$
Digital Logic   Number System
Question 2 Explanation:

 Question 3
How many 32K x 1 RAM chips are needed to provide a memory capacity of 256K-bytes?
 A 8 B 32 C 64 D 128
Computer Organization   Memory Chip Design
Question 3 Explanation:
 Question 4
A modulus -12 ring counter requires a minimum of
 A 10 flip-flops B 12 flip-flops C 8 flip-flops D 6 flip-flops
Digital Logic   Sequential Circuit
Question 4 Explanation:
 Question 5
The complement of the Boolean expression $A B(\bar{B} C+A C)$ is
 A $(\bar{A}+\bar{B})+(B+\bar{C}) \cdot(\bar{A}+\bar{C})$ B $(\bar{A} \cdot \bar{B})+(B \bar{C}+\bar{A} \bar{C})$ C $(\bar{A}+\bar{B}) \cdot(B+\bar{C})+(A+\bar{C})$ D $(A+B) \cdot(\bar{B}+C)(A+C)$
Digital Logic   Boolean Algebra
Question 5 Explanation:

There are 5 questions to complete.