The interview included two interviewers. It began with a brief explanation about the company and the role, and then moved on to questions. The questions started at an easy level of difficulty and became increasingly complex as correct answers were given. The topics covered were logic design and a bit of computer architecture. The interview lasted two hours and really pushed the candidate to the limit in terms of alertness and ability to respond to questions.
Interview questions [1]
Question 1
You are given two Full Adders (FA) and one Half Adder (HA).
Using only these components, design a 3-bit adder that adds three single-bit inputs: A, B, and C.
Your circuit should output a Sum and a Carry-out.
Describe your logic design approach.
You may assume all gates within the adders are ideal.
Do not use any additional gates beyond the given components.