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Test 2 Discussion

Total questions: 23

Worksheet time: 15mins

Name
Class
Date
1.

If both the inputs A and B are at DIFFERENT voltage levels, then output Q is true”. Identify the logic gate.

a)

OR Gate

b)

NOR Gate

c)

EX-OR Gate

d)

EX-NOR Gate

2.

What type of logic is this table showing:

a)

AND

b)

NOT

c)

NOR

d)

OR

3.

"The burglar alarm will go off if either the door or the window or both are opened". This is an example of which type of Logic?

a)

OR

b)

NOT

c)

XOR

d)

XNOR

4.

What will the circuit's output be?

a)

0

b)

1

5.

Which is the truth table for the XOR gate?

a)
b)
c)
d)
6.

The output of an exclusive-NOR gate is 1,Which input combination is correct?

a)

A = 1 B = 0

b)

A = 0 B = 0

c)

A = 0 B = 1

d)

none of the above

7.

Which timing diagram shown in Figure 3-1 is correct for an inverter?

a)

a

b)

b

c)

c

d)

d

8.

For a three-input AND gate, with the input waveforms as shown in Figure 3-3, which output waveform is correct?

a)

a

b)

b

c)

c

d)

d

9.

What is the output Y of this logic cricuit if A = 1, B = 1, and C = 1

a)

0

b)

1

10.

What is the output Z of this logic cricuit if A = 1 and B = 1

a)

0

b)

1

11.
The only time this statement is false is if both inputs are false.
a)
a NOT gate
b)
an AND statement
c)
an OR statement
d)
an IF statement
12.
The only time an XOR is true is when ___
a)
both inputs are false
b)
both inputs are true
c)
one input is true and the other input is false
d)
the output is grounded
13.
what is a output
a)
y=0
b)
y=1
14.
what is a output
a)
0
b)
1
15.
(C AND D) OR (NOT(A OR B)) = Q, If A=1, B=1, C=0 and D=1, what does Q equal?
a)
0
b)
1
16.

The simplification of the Boolean expression as shown in Figure

a)

1

b)

0

c)

BC

d)

A

17.

In SOP, 000 means

a)

ABC

b)

A'B'C'

c)

A'BC'

d)

ABC'

18.

In POS, O11 means

a)

A'BC

b)

A+B'+C

c)

A'+B+C

d)

A+B'+C'

19.

Output =

a)

A.B'

b)

(A.B)'

c)

A.B

d)

A

20.

Output=

a)

A+B

b)

(A+B)'

c)

AB

d)

(AB)'

21.

A switching function f(A,B,C,D) = A'B'CD+A'BC'D+A'BCD+AB'CD

a)

Σm(3,5,7,11)

b)

Σm(6,5,7,11)

c)

Σm(3,5,8,11)

d)

Σm(3,5,7,13)

22.

The Karnaugh map for a SOP function is given below in Fig.1. Determine the simplified SOP Boolean expression.

a)

F = BD+B'C'+A'C'D

b)

F = B'D'+BC+A'C'D

c)

F = B'D'+B'C'+ACD

d)

F = B'D'+B'C'+A'C'D

23.

_____________ expressions can be implemented using either (1) 2-level AND-OR logic circuits or (2) 2-level NAND logic circuits

a)

POS

b)

SOP