Category Archives: LEAPS Elliott 405

Elliott 405 – basic principles

This selection from ‘Big Doug’ Selway’s trove of documents on the 1950s Elliott 405 mainframe computer takes us right back to the basics. First up is a ‘functional block diagram’ of the system. And what I find interesting about this is: How basic it is. Computers were really quite crude beasts back then. How it was felt you needed to… Read more »

Elliott 405 – a simplified representation

There’s something about  this brochure that just screams 1950s. The graphics on the cover, for instance, are straight out of Mad Men. ‘A simplified representation of the National-Elliott Electronics Data Processing System’ is the kind of brochure you wouldn’t think was necessary – or appropriate – for this kind of machine. The Elliott 405 wasn’t something you bought on a… Read more »

Elliott 405 cheat sheet

      No Comments on Elliott 405 cheat sheet

In among Big Doug’s small but treasured trove of documents relating to the GPO’s National-Elliott 405 computers is a small yet fascinating document that seems to be part cheat sheet and part marketing material. The six-page, fold-out booklet is handily sized to fit into a shirt pocket, along with your pocket protector and 6H pencil. Most of the National-Elliott 405… Read more »

Elliott 405 – a fascinating glimpse into vintage computing

History isn’t just about dates and the events that get memorialised in statues. Far more fascinating is the personal and the quotidian. A thumbprint left in an ordinary ceramic bowl is a more direct connection to the lived experiences of people the past than any number of crowns and sceptres. And I think there’s an aspect of even recent history… Read more »