A truth table is a good way to show the function of a logic gate. It shows the output states for every possible combination of input states. The symbols 0 (false) and 1 (true) are usually used in truth tables. The example truth table shows the inputs and output of a NAND gate.

Hint: You can solve the exercise in steps. First find the output of the OR gate, call it F1 = A + B and then find output

Exercise #1 Find the output F of the following digital circuit. Fill in your answer in the corresponding column of the truth table. Check your solution by pressing the 'SUBMIT' button. Your errored answer will be highlighted in red.



Truth Table : NAND gate

A B

Truth table : Exercise #1

A B C F
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1