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"Analouge" calculator.

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cosmox

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Hi all!

First of all, I´m not shure that this topic fits in here, but I could not find any other
that did, so..

The last couple of weeks i´ve thought about designing digital logic using descrete
components (transistors, resistors etc).

The project, that probably will span eons, is a simple "macro" calculator
constructed with the 74xx181 as a base.

I´m indending to make it "modular"
(ex, 181, memory, control on separate boards) so
I can increase the size and computational "power" of it as the work progresses
using some sort of bus system.

The goal is to make it 32bit and then perhaps donate it
to a school, museum or some other place where it can have educational purposes.
I´ve thougt about putting a LED at each gate so you can se the bits beeing
suffeld around the different parts of the calculator.

I know, it will probably fill several m² and consume the power equivalent to a smal city.

What should i consider when (and if) I do this?
Decoupling, noise, power, choise of transistor, architetchure etc..

Is it even possible?

Best regards / Hampus

P.s And no, I´m not insane (according to my cat). And yes, I´m single. D.s
 

Why don't you build it using relays instead? Then it will also sound really nice. :wink:

But seriously, build yourself a true analogue computer instead - it is much easier
to build and you can for instance simulate lunar landings:
**broken link removed**

/Rambo
 

Analouge is very interesting but not the thing that i want to do.
I want to see large circutboards filled with "tincup" transistors.
I forgot to write it before but the plan is to fit it on a wall.

I saw a documenary on TV a couple of years ago about some guys who
built ENIAC (i think) from transistors.
It was kewl to see 150m² computer shrunk down to about a 1000x400mm PCB.

Analouge however sounds interesting and i will dig down a little further just for the fun of it :)

About the relays, here is a guy who actualy did it.8)

/Hampus
 

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