Cool 4004 based calculator

From: Vintage Computer Festival <vcf_at_siconic.com>
Date: Sat Jun 5 18:58:46 2004

On Sat, 5 Jun 2004, Tony Duell wrote:

> > So I just opened it up and <surprise> it's got an Intel 4004 inside!
>
> Does it contain the other related chips (4001 ROM, 4002 RAM)?

Probably. But the lighting was bad and I was too far gone at that point
to tell, so I decided to put it back together to re-examine it later when
I was in a better state of mind :)

> This machines is the sort of thing you don't just power up!. It's
> sufficiently rare, and the chips are also rare (4004s are difficult to
> find, the ROMs with the right code in them are presumably impossible to
> get) that you _must_ find a way to test that power supply on a dummy
> load. Get the 4004 etc data shsets to work out vhat voltages to expect (I
> can dig these out if you can't get them any other way).
>
> If in doubt, stop and ask. This sounds like a very interesting machine,
> and it would be a great pity to do damage to it.

Ok, I'll open it up tonight (time permitting) and take some photos for
Rick and also survey the rest of the unit.

-- 
Sellam Ismail                                        Vintage Computer Festival
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Received on Sat Jun 05 2004 - 18:58:46 BST

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