Elliott Automation Driver board from the Arch 1000 Computer
This PCB was listed as a 'mystery item' on our website, with users encouraged to provide information. The following is a summary of the info provided:
We have just received the following from Peter Moores:
I have worked on this type of board some years back and it looks like a driver board from a Elliot Automation Arch 1000. The reason I believe this is that the predecessor system the 803 and 803b had encapsulated AND OR gate logic in an item called a Minilog i.e. a logic brick. These never had transistors in but the Arch 1000 (if I remember correctly) had the same logic brick layouts with up to sixteen connections but un-encapsulated and had the first germanium transistors
We are grateful to Peter Moores for this information
<span-US">"As a student I had the chance to work at a retired Elliot Arch 1000 process control computer (1971).
<span-US">It had 8k of 18 bit wide core memory, 1 accumulator (today we call it register), an instruction set of 13 instructions (an early risc computer).
<span-US">It had a very simple operating system (monitor), hard wired by a diode matrix (less than 100 instructions):
<span-US">It checked 4 switches of the switch register in order to
<span-US">* jump to routine B
<span-US">* execute a binary loader
<span-US">* ??don’t remember??
<span-US">The Arch 1000 was used for continued control in a production plant in chemical industry, I have no further details.
<span-US">The boards I remember were larger in size, (higher) than shown in (Driver Board).
<span-US">They had encapsulated Minilog circuts (mainly containing 2 NAND gates with 4 inputs and an extension input, with one germanium transistor for each gate).
<span-US">From Werner UelpenichDate : 1962
Manufacturer : Elliott
This exhibit has a reference ID of CH15537. Please quote this reference ID in any communication with the Centre for Computing History.