Digital Electronics

Q1:
The counter shown in the given figure is built using 4 -ve edge triggered toggle FFs. The FF can be set asynchronously when R = 0. The combinational logic required to realize a modulo-13 counter is

A
F = Q4 Q3 Q2 Q1

B
F = Q4 + Q3 + Q2 + Q1

C
F = Q4 + Q3 + Q2 + Q1

D
F = Q4Q3Q2Q1

ANS:A -

F = Q4 Q3 Q2 Q1

Counter is modulo-13, it will count up to 15 but due to mod-13, it will be reset at 13, (13)10 = (1101 )2 = Q4 Q3 Q2 Q1.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.