PROBLEM 8 (5 points) Which counting sequence is supported by the following connections for 73163? LOAD (QD'QcQB'QA'+QDQc'QBQA'+ QDQCQB'QA)' =(QD'QcQB'QA')' (QDQC QBQA') (QDQCQB'QA)' A 1, B Qc, C=1, D=Q A. 01-3→4→5 6 8 9 10 14 15 0→1→2→... 12 13 15 0 1→2→... B. 0 1 2 7 8 9 10 C. 0 1 3 5 6 7 8 D. 0 1 2 3 4 7 8 9 9 10 13 15 0 1→2→.... 10 13 15 0 1 2 ... PROBLEM 9 (5 points) A 4-bit binary up counter has an input clock frequency of 20 kHz. The frequency of the most significant bit is A. 1.25 kHz B. 2.50 kHz C. 160 kHz D. 320 kHz PROBLEM 10 (5 points) Which is the correct excitation for implementing a JK flip-flop using a D flip-flop and extra- gates? A. D=JQ+K'Q B. D=J'Q+KQ C. D=JQ+K'Q' D. D J'Q'+KQ PROBLEM 11 (5 points) R-S type flip-flop can be converted into D type flip-flop if S is connected to R through A. Inverter B. AND gate C. EX-OR gate D. OR gate