Question

Arrange the following steps in the correct order to understand the functioning of a 3 to 8 line decoder.
(A) The encoder enable input is set to 1.
(B) The decoder activates one of its 8 output lines based on the input code.
(C) The input binary code is applied to the decoder.
(D) The decoder converts the 3-bit binary input into 8 possible outputs.

• A. (A), (B), (C), (D)
• B. (A), (B), (C), (D)
• C. (C), (B), (A), (D)
• D. (A), (B), (C), (D)

Hint:

In a 3 to 8 decoder, the 3-bit input corresponds to one of the 8 outputs based on the decoder's logic, and the encoder enable input is crucial for proper operation.

Answer 1

The Correct Option is A

Step 1: 3-to-8 Line Decoder Operation.
- (A) The encoder enable input requires a logic high (1) for decoder operation.
- (B) The decoder activates a specific output line determined by the 3-bit input.
- (C) The 3-bit input to the decoder is the input binary code.
- (D) The decoder translates the 3-bit binary input to a single active output from the 8 possibilities.

Step 2: Order Summary.
The correct sequence is (A), (B), (C), (D).