Notebook kept by Ernest Lenaerts during his work on the LEO computer, dated 15th January - 30th May 1957.

Includes entries:
NB25-003: 15th Jan 1957
NB25-004: Immediate Needs  
NB25-005: 16th Jan 1957
NB25-015: 24th Jan 1957
NB25-016: LEO II-2
NB25-018: Assembly LEO II-2
NB25-022: [6th] Feb 1957
NB25-025: [4th] Feb 1957
NB25-026: Phase 2 Coordinator
NB25-028: Barnes
NB25-030: Phase 1  Pulse Generation. 4 Drawer Cabinet
NB25-031: 8th Feb 1957  
NB25-033: Move to Minerva
NB25-037: Temporary Conditions for Coord Tests
NB25-039: Assembly
NB25-041: Package Spares. Coordinator Tests
NB25-042: 21st Feb 1957
NB25-044: 22nd Feb 1957
NB25-045: Next Stage of Coord
NB25-047: 25th Feb 1957. Work at Cadby
NB25-048: 26th Feb 1957
NB25-050: Tests for Phase 2
NB25-051: 27th Feb 1957
NB25-052: 28th Feb 1957
NB25-054: "12th Feb 1956" [MISDATED]
NB25-056: 18th Mar 1957
NB25-058: Tools
NB25-059: Tests on Operating Control
NB25-062: 21st Mar 1957
NB25-063: Part C Testing
NB25-065: 25th Mar 1957
NB25-069: 9th Apr 1957
NB25-072: 15th Apr 1957
NB25-073: 15th Apr 1957
NB25-075: Floating Point Arithmetic
NB25-077: 5th May 1957. Maintenance of LEO II. [sketch of console]
NB25-078: 7th May 1957
NB25-081: Testing of New Storage Unit
NB25-084: Possible Rack Change
NB25-085: Order Value Bible
NB25-086: Test Section
NB25-087: Gear for B Tests
NB25-090: 27th May 1957


The Lenaerts notebooks are being digitised and transcribed as part of the National Lottery Heritage Funded LEO project at The Centre for Computing History.  We are indebted to our team of volunteers for scanning and transcribing the notebooks. If you would like to get involved with our work on these fascinating documents, please get in touch!

Provenance :
The notebooks are being digitised while on loan to The Centre for Computing History from the LEO Computers Society, with the kind permission of the Lenaerts family.