Snap Circuits 750-in-1 Manual

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Project #642
OBJECTIVE: To demonstrate the operations of the NAND gate.
NAND Gate
Project #643
OBJECTIVE: To demonstrate the operations of the OR gate.
OR Gate
The NAND gate works the opposite of the AND as shown in the logic
chart.
Using the chart set the switches (S1 & S2) to the different states.
When you a have logic “0” the display (D7) lights the letter “L”.
The basic idea of an OR gate is: If A OR B is 1 (or both are 1), then
Q is 1.
Using the chart, set the switches (S1 & S2) to the different states. Only
when you a have logic “0” the display (D7) does not light the “H”.
A B Q D7
0 0 1 –
1 0 1 –
0 1 1 –
1 1 0 “L”
A B Q D7
0 0 0 –
1 0 1 “H”
0 1 1 “H”
1 1 1 “H”
A
B
Q
NAND Gate
A
B
Q
OR Gate