2) Counters a) Design a two-bit counter of value AB which cycles through the following repeating...

2) Counters
a) Design a two-bit counter of value AB which cycles through the following repeating pattern, using each of the following ?ip-?ops. Clearly show your design with all the necessary connections.
AB : 00 ?? 10 ?? 01 ?? 00 ?? 10···
i) two D-FFs ii) two T-FFs iii) two JK-FFs
b) Design a three-bit counter of value ABC which cycles through the following repeating pattern, using each of the following ?ip-?ops. Clearly show your design with all the necessary connections.
ABC : 001 ?? 100 ?? 011 ?? 010 ?? 001 ?? 100···
i) three D-FFs ii) three T-FFs iii) three JK-FFs

Expert Solution

JK Flip Flop Truth Table			JK Flip Flop Excitation Table
J	K	Q	Q	Q+	J	K
0	0	Q	0	0	0	X
0	1	0	0	1	1	X
1	0	1	1	0	X	1
1	1	Q’	1	1	X	0

T Flip Flop Truth Table		T Flip Flop Excitation Table
T	Q	Q	Q+	T
0	Q	0	0	0
1	Q’	0	1	1
		1	0	1
		1	1	0

D Flip Flop Truth Table		D Flip Flop Excitation Table
D	Q	Q	Q+	D
0	0	0	0	0
1	1	0	1	1
		1	0	0
		1	1	1

2.a

Present State		Next State		T Flip Flop		D Flip Flop		JK Flip Flop
A	B	A⁺	B⁺	T_A	T_B	D_A	D_B	J_A	K_A	J_B	K_B
0	0	1	0	1	0	1	0	1	X	0	X
0	1	0	0	0	1	0	0	0	X	X	1
1	0	0	1	1	1	0	1	X	1	1	X
1	1	X	X	X	X	X	X	X	X	X	X

2.b

Present State			Next State			T Flip Flop			D Flip Flop			JK Flip Flop
A	B	C	A+	B+	C+	TA	TB	TC	DA	DB	DC	JA	KA	JB	KB	JC	KC
0	0	0	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
0	0	1	1	0	0	1	0	1	1	0	0	1	X	0	X	X	1
0	1	0	0	0	1	0	1	1	0	0	1	0	X	X	1	1	X
0	1	1	0	1	0	0	0	1	0	1	0	0	X	X	0	X	1
1	0	0	0	1	1	1	1	1	0	1	1	X	1	1	X	1	X
1	0	1	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
1	1	0	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
1	1	1	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X

Manojponduru answered 3 years ago

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