Things are tough right now ...

They're tough for everyone :( But when coronavirus hit here in the UK, the museum had to close its doors to the public, and we lost practically all our income overnight.

Please Donate Via Just GivingNo visitors, no workshops, no events, no school visits... no income. We know that things are tough for everyone right now, but if you can afford to help us through these tough times please donate what you can.

There's over 36,000 exhibits here! That should keep you occupied for a bit - get searching!

Or come and get involved on our social media channels ...

      Twitch  Facebook          Online Gift Shop      

Thank you.

 Home > LEO Computers > Lyons Electronic Office (LEO) Archive > CMLEO/PB - Peter Bird Collection > CMLEO/PB/PH Photographs > Photographs of LEO I > 60491 Ernest Lenaerts ... e LEO I Demonstration
 

60491 Ernest Lenaerts, Ray Shaw and Ernest Kaye set up for the LEO I Demonstration


Description of Photograph

Photograph of three of the LEO I team preparing for the demonstration to Lyons board members on 8 Mar 1950. Lenaerts is at the blackboard, presumably chalking up the Payroll job which is visible on the board in CMLEO/PB/PH/1/55715.

The 'Accumulator Store', next to which Ray Shaw sits, has been draped in black cloth, perhaps to concentrate the eye on the scopes.

Research comments: This photograph shows preparation for an early demonstration of LEO I which takes place long before the machine is finished. The area around LEO is clearly still being developed and LEO's racks are incomplete. The 'Accumulator Store', complete with black draping, can be more clearly seen in another photograph taken the same day. Lenaerts, Kaye and Shaw are key members of the development team. The LEO Chronicle entry for 8th March 1950 states that "Demonstrations are given to Directors, Office Managers and Supervisors, and representatives of the Clerical Staff Committee of the way counting and addition are carried out by the calculator." The team provide support notes that include an explanation of binary. (LM)

Provenance
Collected by Peter Bird as part of his research for his book LEO - The First Business Computer (1994).


Date: 8th March 1950

Physical Description: 1 photographic print; black and white

Archives Hub References: CMLEO/PB/PH/1/60491
PJB/3/2/32A

Related Topics:


Comment on This Photograph

This exhibit has a reference ID of CH60491. Please quote this reference ID in any communication with the Centre for Computing History.

Photograph of 60491 Ernest Lenaerts, Ray Shaw and Ernest Kaye set up for the LEO I Demonstration

Copyright
Lyons copyright

Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum