Notebook kept by Ernest Lenaerts during his work on the LEO computer, dated 2nd May to 12th September 1956.

Includes entries:
NB23-002: 2nd May 1956
NB23-003: Staff Review before Hols
NB23-005: 11th May 1956
NB23-008: On Return From Holiday
NB23-011: LEO II Valve changes. Maintenance equipment needed
NB23-012: Assembly Team
NB23-014: 28th May 1956
NB23-018: 6th June 1956
NB23-019: Queries to be Settled
NB23-022: TRT requires Statement on Coordinator Multi Add Subtract
NB23-024: 16th June 1956. Lectures for Assembly Team. Manual Operation
NB23-027: Outstanding Items for Decision. Rules to be observed
NB23-028: Work for […]. Typing and Secretarial
NB23-029: 19th June 1956
NB23-030: Clearing of SCT. Register stacking
NB23-033: Valve Testing
NB23-035: Urgent Work
NB23-038: Maintenance LEO II
NB23-040: Move to Elms House
NB23-042: 5th July 1956
NB23-043: Spares
NB23-045: 12th July 1956. Inlet Annex
NB23-046:  Consideration of Move to Elms House
NB23-047:  Reassembly
NB23-048:  Staff to go to Elms House for completion of assembly
NB23-049: Wiring Change. Mods to be written out
NB23-053: Move to Elms House
NB23-057: 27th July 1956. Session with PNM
NB23-063: Items needing attention
NB23-065: 7th Aug 1956
NB23-066: 8th Aug 1956
NB23-074: 31st [Aug?]. Possible Pulse wire colour codes
NB23-076: 2nd Sep 1956
NB23-082: 12th Sep 1956
NB23-084: Pulse Wires
NB23-085: Shifting


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.