Question

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8. (5pts) We want to build a 36-second stopwatch, which needs a MOD-36 counter. How to come up with the MOD-36 counter if you only have 4-bit counters with clear input? Show your connections below. A3 A2 A1 A0 A3 A2 A1 AO Clear Clear Count=1 Count = 1 4-bit binary Counter 4-bit binary Counter CLK CLK

Answer 1

Answer is been attached below,

MOD-36 counter It counts o-35 using 4-bit counter, it count upto 24 = 16 (0-15) mod 16 using 4-bit counter can count upta 2 7 2 = 128 stales (0-127) When counter become 35, it should reset to o 35. => 2/35 2 17-IN 2 8-1 2 4 - 0 2 20 1-O (00100011), when counter bit be comes 0010 0011 it should cleay LSB A3 A2 Αι Α-o MSB A3 A2 AI AO Tu clear count = 1 count=1 CLK clear 4-bit Binary counter CLK (ADA, AO MSB LSB side side

(or) connect clear to O A3 OA2 AU O AO D clear O A3 O A2 AI AO a

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