Dr. Cockroach2 Input Nand gate using only diodes and resistors.
2 Input Nand Gate
A project log for LIGHT LOGIC - HIC SVNT DRACONES
Using a LED/LDR pair to form inverting Photonic logic gates. The entire Boolean logic set handled by resistors and diodes! Who'd'a thunk
Discussions
Become a Hackaday.io Member
Create an account to leave a comment. Already have an account? Log In.
That's a pity, but I think that would be nice to measure it anyway (min, typ, max), in order to understand the real potential of the implementation.
Regarding speed would be extremely nice to have an all optical solution, meaning controlling with light if another light source pass or not, with very (very) quick reaction times. Something like this might reuse the relays computer architectures...
In any case your realization remain a masterpiece! ;)
Are you sure? yes | no
How do you solder without burning and clean without staining cardboard?
Are you sure? yes | no
Well, so far no burning or cleaning. The paper, card stock or cardboard seems to take the heat very well. I just have a cheap WalMart iron with a worn out tip ATM
Are you sure? yes | no
I just discovered your diodes&light logic, it is very very interesting and the cardboard realization a masterpiece! A question: do you know the frequency limits of this type of logic?
Are you sure? yes | no
Not really but very slow compared to transistors as a CdS photo resistor has a noticeable reaction and recovery curve and every one seems to be different so matching them up is a bit of a pain ;-)
Are you sure? yes | no