How many output lines are required in a decoder to drive a seven-segment display?
Question
How many output lines are required in a decoder to drive a seven-segment display?
Solution
A seven-segment display requires 7 output lines from a decoder. Each output line corresponds to one of the seven segments (labelled a through g) that can be lit up to display a numeral or some letters. Therefore, to control each individual segment, you would need a separate output line, making
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