16Which circuit converts 2ⁿ input lines into an n-bit code?AFlip-flopBMultiplexerCEncoderDDecoderView AnswerDiscussWorkspaceReportSaveEasy
17Which circuit is used to drive a seven-segment display from BCD input?AShift registerBComparatorCMultiplexerDBCD-to-seven-segment decoderView AnswerDiscussWorkspaceReportSaveEasy
18The sum output of a half adder is:A(A · B)̅BA + BCA · BDA ⊕ BView AnswerDiscussWorkspaceReportSaveEasy
19A half adder produces:AOnly a carryBOnly a sumCSum and carry from three bitsDSum and carry from two bitsView AnswerDiscussWorkspaceReportSaveEasy
20A comparator circuit:ADetermines whether one number is greater than, equal to or less than anotherBAdds two numbersCStores dataDCounts pulsesView AnswerDiscussWorkspaceReportSaveEasy