Control Data 449 Special Miniature Computer from 1967?

Gavin Scott gavin at
Fri Oct 16 08:04:00 CDT 2020

Or was it really just a calculator? The mode list in the ad kinda
suggests it wasn't programmable so the human operator may have been
required to be the program and the rest of the "system".

On Fri, Oct 16, 2020 at 4:23 AM rice43 via cctalk <cctalk at> wrote:
> ------ Original Message ------
> From: "Steve Malikoff via cctalk" <cctalk at>
> To: cctalk at
> Sent: Friday, 16 Oct, 2020 At 08:02
> Subject: Control Data 449 Special Miniature Computer from 1967?
> I was idly browsing early editions of Computer World journal on Google
> newspapers and found an announcement
> and picture of the '449', an experimental aerospace computer built by
> Control Data in 1967 and touted as
> "the world's smallest computer" at 4" x 4" x 9", of which the logic part
> is a 4" cube and the rest is the battery.
> It's on page 3 of Computer World Sep 20 1967:
> <>
> It seems to me it may have been an analogous machine to the Apollo AGS
> perhaps and would like to know a bit more
> about it, but I've only been able to find a brief mention of the '449-2
> Special Miniature Computer' and
> that's it. hasn't turned up anything. I'm just curious about
> the tech used, no doubt it used DIPs
> or flatpack micrologic and a tiny core plane?
> Steve.
> The only source i can see shows that prototypes were shipped to the US
> Military. I imagine, from the pretty limited instruction set shown on
> the article you linked, that  it was primarily used for ballistics
> calculations for, say, missiles or mortars. Being what i assume was a
> military contract, i don't imagine many of these prototypes were made,
> and details would be classified.
> With the technology of the time, I can't imagine it had much memory even
> compared to other small machines like the PDP-8 and AGC. The limited
> instruction set would help keep the physical size down, but also limit
> it's usefulness in general applications.
> I'd suspect it was TTL based, like other (very) late 60's machines, with
> a very limited amount of core memory.

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