Statement-wise Verification

• Statement 1 - Correct.
  Decoder converts binary input into one-hot output activating only one output line.
  A decoder maps an n-bit code to one of up to 2^n output lines, commonly as a one-hot output.
• Statement 2 - Correct.
  It can be used for function generation and memory addressing operations.
  Decoders are used in memory/address selection and can implement minterm-based logic functions.
• Statement 3 - Incorrect.
  All outputs of decoder remain active simultaneously during operation.
  A conventional decoder asserts only the selected one-hot output (subject to active-high/low convention)

Core Concept

A decoder maps an n-bit code to one of up to 2^n output lines, commonly as a one-hot output. Decoders are used in memory/address selection and can implement minterm-based logic functions.

Formula / Key Relationship

n inputs → up to 2^n decoded outputs.

Why the Other Options Are Wrong

Option A is incorrect because it includes incorrect statement(s) 3 and omits correct statement(s) 2. Option B is incorrect because it includes incorrect statement(s) 3 and omits correct statement(s) 1. Option D is incorrect because it includes incorrect statement(s) 3.

Exam Shortcut / Approach

Only the selected output is asserted in ideal one-hot decoding.

Common Mistake

All decoder outputs are not active simultaneously.

Quick Revision

One-Hot Decoding and Addressing is linked with Decoders, Combinational Logic and Digital Electronics. Only the selected output is asserted in ideal one-hot decoding.

Statement-wise Verification

• Statement 1 - Correct.
  Decoder converts binary input into one-hot output activating only one output line.
  A decoder maps an n-bit code to one of up to 2^n output lines, commonly as a one-hot output.
• Statement 2 - Correct.
  It can be used for function generation and memory addressing operations.
  Decoders are used in memory/address selection and can implement minterm-based logic functions.
• Statement 3 - Incorrect.
  All outputs of decoder remain active simultaneously during operation.
  A conventional decoder asserts only the selected one-hot output (subject to active-high/low convention)

Core Concept

A decoder maps an n-bit code to one of up to 2^n output lines, commonly as a one-hot output. Decoders are used in memory/address selection and can implement minterm-based logic functions.

Formula / Key Relationship

n inputs → up to 2^n decoded outputs.

Why the Other Options Are Wrong

Option A is incorrect because it includes incorrect statement(s) 3 and omits correct statement(s) 2. Option B is incorrect because it includes incorrect statement(s) 3 and omits correct statement(s) 1. Option D is incorrect because it includes incorrect statement(s) 3.

Exam Shortcut / Approach

Only the selected output is asserted in ideal one-hot decoding.

Common Mistake

All decoder outputs are not active simultaneously.

Quick Revision

One-Hot Decoding and Addressing is linked with Decoders, Combinational Logic and Digital Electronics. Only the selected output is asserted in ideal one-hot decoding.

Statement-wise Verification

• Statement 1 - Correct.
  Decoder converts binary input into one-hot output activating only one output line.
  A decoder maps an n-bit code to one of up to 2^n output lines, commonly as a one-hot output.
• Statement 2 - Correct.
  It can be used for function generation and memory addressing operations.
  Decoders are used in memory/address selection and can implement minterm-based logic functions.
• Statement 3 - Incorrect.
  All outputs of decoder remain active simultaneously during operation.
  A conventional decoder asserts only the selected one-hot output (subject to active-high/low convention)

Core Concept

A decoder maps an n-bit code to one of up to 2^n output lines, commonly as a one-hot output. Decoders are used in memory/address selection and can implement minterm-based logic functions.

Formula / Key Relationship

n inputs → up to 2^n decoded outputs.

Why the Other Options Are Wrong

Option A is incorrect because it includes incorrect statement(s) 3 and omits correct statement(s) 2. Option B is incorrect because it includes incorrect statement(s) 3 and omits correct statement(s) 1. Option D is incorrect because it includes incorrect statement(s) 3.

Exam Shortcut / Approach

Only the selected output is asserted in ideal one-hot decoding.

Common Mistake

All decoder outputs are not active simultaneously.

Quick Revision

One-Hot Decoding and Addressing is linked with Decoders, Combinational Logic and Digital Electronics. Only the selected output is asserted in ideal one-hot decoding.