 
 | This chip contains four (QUAD) NOR gates, each with 2 inputs, which can operate individually or in combination.
Uses: NOR logic gate. Found on electronic resource boards - Short Time Delay 1, Flip Flop 1, Set Reset Flip Flop, Motor Speed Control
In normal use:-
Pin 14 (+3 to 15v) is connected to the positive (+ve) supply.
Pin 7 is connected to the negative (-ve) supply.
All unused inputs should be connected to the positive supply.
N.B. The output signal is low powered and normally needs amplification to drive output devices.
Each logic gate works as shown in the truth table.
Input 1 Input 2 Output
(eg pin 1) (eg pin 2) (eg pin 3)
0 0 1
0 1 0
1 0 0
1 1 0
Connecting two inputs of a gate together (eg 1 & 2) makes the gate act like a NOT gate or INVERTER.
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