Decoders

What is the normal operating condition of decoder corresponding to input & output states?

• E= 0 & Outputs at '0' logic state

• E = 1 & Outputs at '1' logic state

• E= 0 & Outputs at '1' logic state

• E= 1 & Outputs at '0' logic state

Why are the enale lines specifically used for connecting two or more IC packages in accordance to its application in decoder circuit?

• It allows the reduction of digital function into similar function with more inputs & outputs

• It allows the expansion of digital function into similar function with more inputs & outputs

• It allows the reduction of digital function into different function with more inputs & outputs

• It allows the expansion of digital function into different function with more inputs & outputs

BCD input 1000 is fed to a 7 segment display through a BCD to 7 segment decoder/driver. The segments which will lit up are ………….

• a,b,c

• a,b,d

• a,b,c,d,e

• All

Which device has one input and many outputs?

• Multiplexer

• Demultiplexer

• Decoder

• Encoder

In a 7 segment display, LEDs b and c lit up. The decimal number displayed is ……….

• 9

• 7

• 1

• 3

How many 3-line-to-8-line decoders are required for a 5-of-32 decoder?

• 2

• 3

• 4

• 5

BCD to 7 segment conversion is a

• decoding process

• encoding process

• comparing process

• Multiply process

Which of the following can be represented for decoder

• Logic circuit

• combinational logic

• sequential circuit

• analog circuit

which of the following represents number of output lines for decoder with 4 input lines?

• 16

• 8

• 32

• 64

A decoder converts n inputs to _____ outputs

• n^2

• 2n

• n

• 2^n