COD UNIT -1 QUIZ

What is the carry output of a Full Adder when A = 1, B = 1, Cin = 0?

• 2

• undefined

• 0

• 1

In a 4-bit SISO register, how many clock pulses are needed to shift all bits?

• 4

• 5

• 3

• 2

In a MUX, how many selection lines are needed for 8 input lines?

• 2

• 3

• 1

• 4

Micro-operations are operations performed:

• On complete data

• On registers at the micro-level

• On I/O only

• Only in ALUs

Which logic gates are used in a Full Subtractor circuit?

• AND, OR

• XOR, AND, OR, NOT

• NAND, NOR

• XOR only

For designing a 4-bit ALU capable of performing addition, subtraction, AND, OR operations. Which components are essential?

• Multiplexer, Full Adder, Decoder

• Full Adder, Logic Gates, Selector

• Flip-flop, Encoder, Adder

• Decoder, Counter, Adder

How many flip-flops are required to build an 8-bit SIPO register?

• 2

• 4

• 6

• 8

In a 4-bit shift register, if data is shifted right, which bit is lost first?

• MSB

• RANDOM BIT

• LSB

• NO BIT IS LOST

How many output lines does a 4-to-2 encoder have?

• 0

• 1

• 3

• 2

A 4-bit PIPO register is loaded with the binary data 1011. After two consecutive clock cycles, the output remains unchanged. Which of the following can be inferred?

• The register is in hold mode and clock is disabled

• Data is being shifted out serially

• The register is SISO , not PIPO

• The input lines are disconnected