F7196
Total Pages: 3

Reg No.: Name:

Max. Marks: 100

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017
Course Code: EC361
Course Name: DIGITAL SYSTEM DESIGN (EC, AE)

Duration: 3 Hours

PART A
Answer any two full questions, each carries 15 marks. Marks
1 a) Analyse the following sequential network. Derive the next state and output (7.5)

equations. Obtain its transition table and state table.

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b) Analyse the asynchronous sequential network shown in figure, by forming the (7.5)

2 a)
b)
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excitation/transition table, state table, flow table, and flow diagram. The network
operates in the fundamental mode with the restriction that only one input variable
can change at a time.

Draw the ASM chart for a mod 8 binary up-down counter (7.5)
One type of clocked T-Flip-flop works as follows: (7.5)
The flip-flop has two inputs, T and P. The flip- flop will change state if T=1 when

the clock(P) changes from | to 0. Under all other conditions, Q should remain
constant. Assume that T and P do not change simultaneously. Obtain a minimal

flow table.

Reduce the following State table using implication chart. (7.5)
Present | Next State | Present
State | X= 1 Output

0

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