Question

Find the Boolean expression B in the digital circuit given below.

• A. $a\overline{b}+\overline{b}c+ca$
• B. $b+bc+ca$
• C. $\overline{a}b+bc+c\overline{a}$
• D. $ab+b\overline{c}+\overline{c}a$

Answer 1

The correct option is A $a\overline{b}+\overline{b}c+ca$

Note, here MSB is 'b' and LSB is 'a'



Borrow, $B=ca+\overline{b}a+\overline{b}c$