The digital block in figure, realized using two positive edge triggered D flip-flops. Assume that for t < 10, Q1 = Q2 = 0. The circuit in the digital block is given by,
to
t
X
Y
DIGITAL
BLOCK
1
D1
Q
1
D2
Q2
Y
A
X
Q2
1 D1
Q1
1-D2
Q2
Y
B
X
Q2
1
D:
Q:
Dz
Q2
Y
C
X
Q1
t2
t: