Question

Design a counter to count-up from 2 to 5 using 3 D Flip-Flops similar to the following sample: Important Steps: After you simplify D2, D1 and DO by kmap Have a piece of paper to draw it then open iCircuit to design it using BCD If it works well as a counter, copy the design from iCircuit and paste it here. 3-Bit Counter Using D Flip-Flop: The State Equation of D Flip-Flop: Q(t+1)=D(t) => Dn=An Count Up From 3 To 5 Using D Flip-Flop Present State Next State D Flip-Flop Inputs A2p Alp AOp A2n Aln AOn D2 D1 DO 0 1 1 0 0 1 0 0 1 0 0 1 0 1 1 0 1 1 0 1 0 1 1 0 1 1 D2=Sum(3,4) and don't care X=Sum(0,1,2,6,7) D1=Sum(5) and don't care X=Sum(0,1,2,6,7) DO=Sum(4,5) and don't care X=sSum(0,1,2,6,7) Using K-map to simplify the functions: D2(A2p, Alp,A0p)=>D2=Alp+A0p'=A1+A0' D1(A2p,Alp,A0p)=>D1=Alp'Apo=A1'AO DO(A2p.Alp,A0p)=>DO-AI' AL A1 A1 NXT A2|| YON AO XOX A2|| Oxx KNOx APIN YXX A0 AO D2 Q2) A2 PCK Q24 Di Q1 -A1 PCK Q14 Al' DO Q아 AO DCK QO AO' Clock

Answer 1

The given problem is solved and the circuit diagram is drawn as follows.

Coccat & to 5 up from flip flops De Di Do Paesent state A2A Next state Ao 0 0 0 0 0 0 - O, 0 0 0 0 0 0 'cation : Knap simplificati Da Aito 01 10 10 Az X Х х х D2 = A, AIAO 10 al 012 A2 X Х X D = Ai Do. Ar At 01 it Az 1 O 0 XX Do = Ao

D2 Qal Az ā IDI AI AL .Do Qul AD • Uk To Clock!