Question

Logic circuitry is used to detect _________

(a) Underflow

(b) MSD

(c) Overflow

(d) LSD

This question was posed to me during an interview.

This intriguing question comes from 1’s, 2’s, 9’s & 10’s Complements topic in chapter Number System and Codes of Digital Circuits

Answer 1

Right option is (c) Overflow

To explain: To check the overflow logic circuitry is used in each case. Overflow occurs when the processor cannot handle the result properly when it produces an out of the range output.