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Previous Year Question (PYQs)

Match List-I with List-II.
 List-I
(computing systems)

List-II
(working/output) 

 (A) Half Adder
 (I) Has $n$ input and $2^n$ output
 (B) Decoder
 (II) CPU Storage unit
 (C) Register
 (III) Used to store program at runtime
 (D) Main memory

 (IV) 2-bit addition circuit

Choose the correct answer from the options given below :





Solution

Half Adder → performs addition of two bits → 2-bit addition circuit → (IV)

Decoder → has $n$ inputs and $2^n$ outputs → (I)

Register → CPU internal storage → (II)

Main memory → stores program during execution → (III)

Thus

(A) → (IV)
(B) → (I)
(C) → (II)
(D) → (III)

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