Playground / 003

Logic Lab

Twelve circuits are waiting on the bench. Read the target truth table, choose a gate for each slot, and make every possible input state behave. Equivalent circuits are welcome.

Level 01 of 12

Both high

The output should be high only when A and B are both high.

Checks 0Best –
Target truth table
PreviewABOUT
000
010
100
111
Live circuit0/1 slots filled

Choose G1 · two inputs

Fill every gate slot, then check the whole truth table.

Gate reference
&

ANDHigh when both inputs are high.

≥1

ORHigh when either input is high.

1

NOTFlips its single input.

=1

XORHigh when the inputs differ.

&̅

NANDThe inverse of AND.

≥̅1

NORThe inverse of OR.

=̅1

XNORHigh when the inputs match.