Fingers Crossed for 2021 ...

2020 was the worst! COVID kept the museum closed for much of the year and a mains water pipe bursting causing a flood kept us closed for the rest. 
We're hoping to re-open in the next few months ... fingers crossed! Read More >>>

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 > 60473 Derek Hemy, Ern ... Leo Fantl with LEO I

60473 Derek Hemy, Ernest Lenaerts, Gordon Gibbs and Leo Fantl with LEO I

Description of Photograph

Photograph of four of the LEO I team.
  •  Back row from left: Derek Hemy and Ernest Lenaerts
  •  Front row from left: Gordon Gibbs and Leo Fantl
The end of the LEO I console is visible on the right hand side.

Related images: Photos taken on the same occasion - CMLEO/LS/PH/1/61861, CMLEO/LS/PH/1/61862,

Research comments: This is an interesting photo of some of the earliest LEO pathfinders. Derek Hemy was instrumental on the systems and programming side of LEO; Ernest Lenaerts, an engineer, had spent time at Cambridge developing the EDSAC machine so was involved in LEO right from the start; Leo Fantl worked alongside Derek Hemy as a pioneer programmer. Gordon Gibbs is the only person in the photo of whom we know little.

Another interesting aspect of this photo is the roll of paper that can be seen hanging (from the ceiling?) near the console. This is early in LEO's I career, the machine having successfully run its first program in 1951. So just what was that roll of paper used for? (LM)

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

Date: Jan 1952

Physical Description: 1 photographic print; black and white

Archives Hub References: CMLEO/PB/PH/1/60473

Related Topics:

Comment on This Photograph

This exhibit has a reference ID of CH60473. Please quote this reference ID in any communication with the Centre for Computing History.

Photograph of 60473 Derek Hemy, Ernest Lenaerts, Gordon Gibbs and Leo Fantl with LEO I

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