Hello,
I am testing components before making my final alarm circuit but i have a problem,
Im testing logic gates atm (an 4input OR gate) and i am wiring pin 7 to 0v and pin 8 to 9v as supposed to, then obviously pin 1 to the led and then the return side of the led to 0v, but the led lights up even though none of the inputs for the OR gate have an input yet, why is this?
when i put 0v to all the pins then leave it then the led will be off and when i remove the 0v from the pins on the chip led will still be off but the second i unplug 9v and plug it back in the led comes on again, is this because of static? if so how can i fix the problem? the easiest way preferably as i dont have 60million capacitors for all the logic gate chips im using in the circuit
thanks in advance
I am testing components before making my final alarm circuit but i have a problem,
Im testing logic gates atm (an 4input OR gate) and i am wiring pin 7 to 0v and pin 8 to 9v as supposed to, then obviously pin 1 to the led and then the return side of the led to 0v, but the led lights up even though none of the inputs for the OR gate have an input yet, why is this?
when i put 0v to all the pins then leave it then the led will be off and when i remove the 0v from the pins on the chip led will still be off but the second i unplug 9v and plug it back in the led comes on again, is this because of static? if so how can i fix the problem? the easiest way preferably as i dont have 60million capacitors for all the logic gate chips im using in the circuit
thanks in advance