C B3C036 Total Pages:2

Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER B.TECH DEGREE EXAMINATION, JANUARY 2017

Course Code: 603
Course Name: SWITCHING THEORY AND LOGIC DESIGN (CS)

Max. Marks: 100 Duration: 3 Hours
PART A
(Answer All Questions)

1. Convert the following numbers from the given base to the bases indicated
a) (250.55), to Hexadecimal (1)
b) (357), to Decimal (1)
0) (110101.1011), to Octal (1)

2. a) Find the 9’s and 10’s complement of (13579) (1)

b) Subtract (1101); from (11010); using 1) 25 complement ii) 1*5 complement (2)
3. Prove the given Boolean identity using laws of Boolean algebra

xtx'y = xty (3)

4. a) Express the given function i ணு minterms form

F(x, भ > |
b) Find the complement of the on using De Morgan’s theorem

70೭೫೫ = +कः 2.೧7 (1%)
PARTB

(Answer Any Two Questions)

(1%)

5. a) What is the difference between canonical form and standard form? Which form is

preferable while implementing a Boolean function with gates? (2)
b) Simplify the given Boolean function F (w, x, 9, 2) 59 (2, 3, 12, 13, 14, 15)
i) Sum of Products and ii) Product of Sums (use K Map) (7)

6. a) Explain the format of single precision floating point number representation and find
the decimal value corresponding to the given floating point number
(1100000101 11101 10000000000000000)2 (4)
b) Convert the decimal numbers 596 and 386 into BCD and do the addition and
subtraction operations in BCD arithmetic. (3)
c) What is an alphanumeric code? Why it is useful in digital computers? (2)
7. a) Express the following Boolean function in canonical form
F(x, y, 2) = x'tyzt+xz'+xy'z’+xyz’ (3)

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