6Combinational circuits differ from sequential circuits because their outputs depend on:AOnly the present inputsBOnly the clockCOnly previous outputsDPresent inputs and past statesView AnswerDiscussWorkspaceReportSaveEasy
8A multiplexer with 8 data inputs needs how many select lines?A2B3C4D8View AnswerDiscussWorkspaceReportSaveEasy
9A ripple-carry adder is slow because:AIt uses too many inputsBEach carry must pass through every stage in turnCIt uses flip-flopsDIt has no carryView AnswerDiscussWorkspaceReportSaveEasy
10Which circuit is used to drive a seven-segment display from BCD input?AShift registerBBCD-to-seven-segment decoderCMultiplexerDComparatorView AnswerDiscussWorkspaceReportSaveEasy