# QuiZ - PDF

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posted:
6/19/2009
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```							Smile!

Q#1 What type of logic gate does this logic circuit configuration produce?

(1) (2) (3) (4)
• • • •

NAND gate NOR gate EXOR gate EXNOR gate

1

Q#2 As per basic rules for binary addition 1 +1 =
(1) 0 (2) 1 (3) 10 (4) 11

Q#3 The largest decimal number that can be represented in binary with eight bits is
(1) 9999 (2) 1111 (3) 28 (4) 28-1

Q#4 the main advantage of parallel transfer over serial transfer of binary data is
(1) (2) (3) (4) parallel transfer is faster than serial transfer because binary data gets compressed parallel transfer is connected to digital waveforms parallel transfer has a public address system

Q#5 A pulse is applied to each input of a 2-input NAND gate. One pulse goes HIGH at t=0 and goes back LOW at t=1 ms. The other pulse goes HIGH at t=0.8 ms and goes back LOW at t=3 ms. The output pulse can be described as follows:
(1) It goes LOW at t=0 and back HIGH at t=3 ms. (2) It goes LOW at t=0.8 ms and back HIGH at t=3 ms. (3) It goes LOW at t=0.8 ms and back HIGH at t=1 ms. (4) It goes LOW at t=1 ms and back HIGH at t=3 ms.

2

Q#6 The output of an OR gate with inputs A, B and C is a 1 (HIGH) when
(1) A =1, B =1 , C =1 (2) (3) (4) (5) A =0, B =0, C =1 A =0, B =0, C =0 answers (1), (2) and (3) Only answers (1) and (2)

Q#7 The output of a 2-input gate is 1 if and only if its inputs are unequal. Its true for
(1) OR (2) XOR (3) XNOR (4) NOR

Q#8 The most suitable gate for comparing two bits is
(1) AND (2) OR (3) NAND (4) XOR

Q#9 the maximum number of 3-input gates in a 16-pin IC will be
(1) 2 (2) 3 (3) 4 (4) 5

3

Q#10 Convert (1132)10 into Binary number (0100 0110 1100)2

4

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