Early computers was Re: Relay computers

From: Hans B PUFAL <hansp_at_citem.org>
Date: Sun Sep 26 03:37:34 2004

Tom Jennings wrote:
> On Sat, 2004-09-25 at 23:37, ben franchuk wrote:

>>Tom Jennings wrote:

>>>Are Zuse's machines stored-program?

>>All machines of that era had too *small* a memory for internal storage
>>of programs, so external ( read manual ) input was needed like paper
>>tape or punched cards or punched film (Zuse).

> Eh, that's not a good enough excuse :-)

Indeed, the Manchester Baby machine of 1948 had 32 words of memory, and
a 3 bit opcode field, despite this it was fully functional a stored
program computer, if somewhat limited in its application.

On the Zuse machine, there is a paper by Rojas which discusses how to
make it into a general purpose computer :

   Rojas, Raul: How to make Zuse?s Z3 a Universal Computer.
   IEEE Annals of Computing, Vol. 20, No. 3, July/Sept. 1998..

This web page also seems apropro :


   -- HansP
Received on Sun Sep 26 2004 - 03:37:34 BST

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