## 2009_1 eExams Past Questions: CIT292 - Computer Laboratory I

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### 2009_1 eExams Past Questions: CIT292 - Computer Laboratory I

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In Boolean algebra, the OR operation is performed by __ properties

All of the options

Which of the following represents DeMorgan’s theorem?

(AB)’ = A’ + B’

A Karnaugh map (K-map) is an abstract form of ____ diagram organized as a matrix of squares.

Venn

A product term containing all K variables of the function in either complemented or uncomplemented form is called a ___.

Minterm

Canonical form is a unique way of representing___

Boolean expressions

A full adder logic circuit has __.

Three inputs and two outputs

Exclusive-OR (XOR) logic gates can be constructed from which of the following logic gates?

AND gates, OR gates, and NOT gates

The ___ function can be used to enable.

AND

Boolean algebra is also called ___

Switching algebra

First operator precedence for evaluating Boolean expressions is __

( )

In a __ counter all the Flip-flops will change states simultaneously

parallel

Any Boolean function can be represented in a

Truth table

In D flip-flop, if clock input is LOW, the D input

Goes high

Which of the following expression depicts complement of the expression A’B + CD’ ?

(A + B’)(C’ + D)

The Octal to binary conversion of 248 = ?

1111002

A Boolean function is said to be in a ___ form if a sum-of-products expression or a product-of-sums expression has at least one term that is NOT a minterm or a maxterms respectively

standard

Odd parity of word can be conveniently tested by _ gate.

XOR

The code where all successive numbers differ from their preceding number by single bit is _.

Excess 3

__ circuit is generated from D flip-flop due to the addition of an inverter by causing reduction in the number of inputs.

Gated D-latch

How many types of sequential circuits do we have?

2

In a NAND based S’-R’ latch, if S’=1 and R’=1 then the state of the latch is:

No change

Boolean algebra is an algebraic structure with ___ arithmetic operations

Two

__ is an odd function

Exclusive-OR

X+0=0+x =x is an example of _ property

Commutative

Which of the following is not one of the arithmetic operations of Boolean algebra?

subtraction

Which of the following logic families has the shortest propagation delay?

AS-TTL

A Boolean function can be converted from algebraic expressions to a product of maxterms by using __

Canonical Conversion Method

LED seven-segment display uses seven individual -----------

Light emitting diodes

Which of the following combinational circuits is renowned for selecting a single input from multiple inputs and directing the binary information to output line?

Data Selector

Minterms are also referred to as Standard ____

product

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