Name: _________________________________________, Roll No.
__________________
Sarhad University, Peshawar
(Distance Education)
Subject
: Digital Electronics
Examination:
Final, Spring 2013
Time Allowed: 03 Hours
Total Marks:
80
NOTE: Attempt five questions. All questions carry equal marks.
Mobile phones and other electronic gadgets are not allowed.
Q1.
Q2.
Q3.
Digital Electronics - Spring 2013 -Page 1 of 1
Q4.
Q5.
Q6.Design a combinational circuit for half adder and half
subtractor.
Q7.A majority function is generated in a combinational circuit
when the output is equal to 1 if the input variables have more 1s
the 0s. The output is 0 otherwise. Design a 3-input majority
function
