Thursday, October 7, 2010

QUESTION 11

Why is a NAND gate used in a BCD ripple counter>??

QUESTION 10

Why is state reduction required in sequential circuit.??

QUESTION 09

Give the universal shift register....

QUESTION 08

What is the best way to solve the feedback timing problem in flipflops....

QUESTION 07

Give the characteristic equations for a counter with two JK flipflops ,A and B and one input x.If x=0,it counts 0,1,2,3,3,....: if x=1 , it counts 3,2,1,0, 0

QUESTION 06

We have a new flip flop with three inputs S R and T in addition to a clock pulse .at any time only one of the inputs must be 1 the S and R inputs abehaves as they do in the SR flip flop...and the T input behaves as in T flip flop.....
now give the characteristic equation.....

QUESTION 05

A D flip flop is connected in such a way that output Q' is connected to D and Q is the output.
determine the relation of the output with the clock.what is the specific function.??

Tuesday, September 14, 2010

QUESTION 4

Determine the final output states over time for the following circuit, built from D-type gated latches:


At what specific times in the pulse diagram does the final output assume the input's state? How does this behavior differ from the normal response of a D-type latch?
  uploaded by (dinesh)

Saturday, September 4, 2010

QUESTION : 03

What is a strobe .... and what is it's function ???  ------- simple question///.....
posted by (dinesh)

QUESTION : 02

We have a decoder with 3 inputs which may be a,b,c and eight active low outputs 0 to 7 . In addition to this there is a active low enable input EN' .We wish to implement the following function using the decoder and a few NAND gates as possible.....show the block diagram..........
                      f(a,b,c,e)= Em(1,3,7,9,15)
(E----- summation....)
 posted by (dinesh)

QUESTION : 01

We wish to build a 32 way active decoder,using only the four - way decoders as given below
                                                                        the inputs may be named as v,w,x,y,z and outputs may be given as 0 to31                                                              posted by (dinesh)