DISTANCE EDUCATION
B.C.A. DEGREE EXAMINATION, MAY 2017.
ELECTRONIC DEVICES AND DIGITAL CIRCUITS
(2003 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
All questions carry equal marks.
20 100)
1. Convert the following decimal number to binary
(302)10 and
(222)10.
Convert the following hexadecimal to binary
(AB1)16 and
.
2. Explain the following
and

Explain the Excess 3-code with an example..
3. Explain the half subtractor and half adder with its truth
table.
Sub. Code
11
DE-171
2
wk10
4. Reduce the following function using k-map

14,16,18, 24, 26, 28, 30
Explain the SOP and POS form in detail.
5. Explain the working principles of D flip flop with
truth table.
Explain the functions of asynchronous counters in
detail.
6. Explain the operations of p-n junction under forward and
reverse bias condition with its characteristics.
7. Explain the working principle of SCR in detail.
Compare BJT with JFET.
8. Explain the characteristics of MOSFET in detail.
What are the applications of OP-AMP? Explain the
characteristics of OP-AMP in detail.