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Electronics Circuit modifcation

Not sure if this is even in the right forum
As part of my task i have designed a car light buzzer system using logic gates to meet the following requirements:
- buzzer sounds when door opens
- buzzer sounds when indicating or head light is on
- key is out of ignition
now i have to modify the circuit design(shown in the picture) by using only one type of universal 2 input logic gates (NAND or NOR)
I've tried multiple ways but it's got my head battered, any help would be much appreciated.
Thanks in advance!
logic.jpg129.6KB
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Joinedup
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Original post by pb1995
Not sure if this is even in the right forum
As part of my task i have designed a car light buzzer system using logic gates to meet the following requirements:
- buzzer sounds when door opens
- buzzer sounds when indicating or head light is on
- key is out of ignition
now i have to modify the circuit design(shown in the picture) by using only one type of universal 2 input logic gates (NAND or NOR)
I've tried multiple ways but it's got my head battered, any help would be much appreciated.
Thanks in advance!


it's fairly simple to make an AND or an OR gate out of NAND or NOR

e.g. http://en.wikipedia.org/wiki/NAND_logic

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