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digital electronics trial

Total questions: 16

Worksheet time: 9mins

Name
Class
Date
1.

which of the following circuits can be used as parallel to serial converter?

a)

Multiplexer

b)

Demultiplexer

c)

Digital counter

d)

Decoder

2.

which device has one input and many outputs

a)

flip flop

b)

multiplexer

c)

demultiplexer

d)

counter

3.

A flip flop can store

a)

1 bit

b)

2 bits

c)

4 bits

d)

8 bits

4.
a)
A
b)
B
c)
C
d)
D
5.
(A+B)(A+C)=
a)
A+BC
b)
BC+BA
c)
ABCD
d)
AB+CD
6.
a)
A
b)
B
c)
C
d)
D
7.
Which truth table is this?
a)
XOR
b)
NAND
c)
NOR
d)
NOT
8.

What is a Flip-Flop?

a)

a 2 state device which offers basic memory for sequential logic operations, heavily used in banks called "registers"

b)

a logic device used to invert a value

c)

a storage device that works with non binary numbers

9.

A "universal" basic memory device used in banks called registers

a)

J-K Flip-Flop

b)

D-Type Flip-Flop

c)

S-R Flip-Flop

10.

A collection of flip-flops used to move data(bits) within a register is a _______.

a)

Shift Register

b)

Bit Register

c)

Flip Register

11.

What type of Flip-Flop is pictured here?

a)

J-K

b)

D

c)

S-R

d)

Toggle

12.

( A + B ) ( C + D )

is the same as

a)

AC + BD

b)

(A . B ) + ( C . D )

c)

A + B + C + D

d)

AC + AD + BC + BD

13.
Decoder is a
a)
combinational circuit
b)
sequential circuit
c)
complex circuit
d)
gate
14.

In a clocked SR latch the outputs of the latch change when:

a)

Clock is 0

b)

Clock is 1

c)

Does not depend on clock

d)

None of the above

15.

A D latch can have both Q and Q BAR the same

a)

True

b)

False

16.

A JK-FF has no Invalid State

a)

True

b)

False