# CS302 Digital Logic Design Quiz 1 Fall 2013

Quiz # 1 will start from Tuesday, 26th November, 2013 and will remain open for two days the last day will be Wednesday, 27th November, 2013The lectures included in this quiz will be from Lecture # 1 to Lecture # 11.

Question # 1 of 10
A SOP expression having a domain of 3 variables will have a truth table having ____ combinations of inputs and corresponding output values.
Select correct option:

2 (Correct)
4
8
16

The OR Gate performs a Boolean _______ function
Select correct option:

Subtraction
Multiplication
Division

Question # 3 of 10
Sum term (Max term) is implemented using ________ gates

Select correct option:

OR (Correct)
AND
NOT
OR-AND

Question # 4 of 10
The number “1259” may belong to _______ number system.
Select correct option:

Binary number system
Octal or Decimal system.

Question # 5 of 10
If two numbers in BCD representation generate an invalid BCD number then the binary ________ is added to the result
Select correct option:

1001
0110
1111 (Correct)
1100

Question # 6 of 10
“1101” in signed representation is equivalent to _______

Select correct option:

10
13 (Correct)
-10
-5

Question # 7 of 10
TTL based devices work with a dc supply of ____ Volts
Select correct option:

+10
+5 (Correct)
+3
3.3

Question # 8 of 10
In decimal value “275” the weight of the digit “7” is ___________
Select correct option:

0
1
10
100 (Not Sure)

Question # 9 of 10

The decimal “10” will have an octal equivalent ________
Select correct option:

9 (Not Sure)
10
11
12

Question # 10 of 10
Caveman number system is Base ______ number system
Select correct option:

2
5 (Correct)
10
16

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Question 1

A standard SOP form has __________ terms that have all the variables in the domain of the expression.

Ans :Sum

Question 2

.Which one of the following is not a valid rule of Boolean algebra?

(a) A + 1 = 1

(b) A = Ā(ans)

(c) A.A = A

(d) A + 0 = A

Question 3

How many data select lines are required for selecting eight inputs?

1

2

3  (correct)

4

Question 4

If two adjacent 1s are detected in the input, the output is set to high.
input combinations will be

1) 0011(ans)

2) 0101

3) 1100

4) 1010

Question 5

The 4-variable Karnaugh Map (K-Map) has ______rows and ____colums

2,2

4,4,   (ans)

4,2

2,4

Question 6

The boolean expression A + B’ + C is

a sum term(ans)

a literal term

a product term

a complemented term

Question 7

the boolean expression AB’CD’is

a sumterm
a product term(ans)
a literal term
always 1

Question 8

Don’t care conditions are marked as ___________ in the output column of the function table
0
1
X(ans)
None of the given options

Question 9

An example of SOP expression is

A + B(C + D)
A’B + AC’ + AB’C
(A’ + B + C)(A + B’ + C)
both (a) and (b)(ans)

Question 10

For a Standard SOP expression, a ______ is placed in the cell corresponding to the product term (Minterm) present in the expression.
0
1 (ans)
X (don’t care condition)