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digital electronics number systems and codes
1. Resistors—usually 300 apiece—inserted between a decoder and a 7-segment display are ________.
(A): current limiting resistors for the 7-segment display
(B): pull-up resistors to keep logic HIGH when the input is open
(C): sense resistors to enable a test of logic levels
(D): surge resistors to prevent damage from power-line variations
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