Which of the following statements is correct about 2 to 4 decoder?
2022
Which of the following statements is correct about 2 to 4 decoder?
- A.
It has 2 inputs, 2 enable lines, and 4 outputs.
- B.
When the decoder is enabled, one of its outputs will be active (i.e. 1) based on the values of its inputs.
- C.
When the decoder is disabled, its two outputs will be active (i.e. 1).
- D.
It can be implemented by using four AND gates having two inputs each and two inverters (NOT gates).
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Correct answer: B
A 2-to-4 decoder has two input lines and four output lines. When enabled, exactly one output becomes active corresponding to the binary value of the inputs.