GATE Overflow | Digital Logic | Test 1 | Question: 25

Question

All digital circuits can be realized using only

• A. Ex-OR gates
• B. AND, OR gates
• C. Half-adders
• D. OR gates

Comments

please explain anyone.

Answer 1

All digital circuits can be realized using 'ONLY' i.e. Which of the following is Functionally Complete.
Obviously we can realize any circuit with the help of Half Adder.

Answer 2

Check here

https://gateoverflow.in/556/gate1992_02-ii

Answer 3

whats wrong witn and and or gate ?

Comments

Try to implement $\overline{A+B}$ with these two only.

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So you mean not gate is not given that's why we can't realise all functions?