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2 cards from this section. Quick, good the night before a test.
What is the primary function of a decoder?
Think about how binary digits relate to electrical signals.
What happens to the outputs of a decoder when the enable signal is low?
Check what the enable signal does for the function.
What is the output of a 3-to-8 decoder when inputs are A=0, B=1, C=0?
Consider what binary value A, B, C represent.
The enable line in a decoder must be high for the decoder to function.
What happens when enable is low?
Create a 4-to-16 decoder using cascaded decoders and describe the necessary enable connections.
Consider how many outputs you need from the combined work of several decoders.
If a 3-to-8 decoder is connected to multiple other circuits, how does the enable signal impact the overall circuit behavior?
Think about what happens when multiple decoders are used at once.
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