Notebook kept by Ernest Lenaerts during his work on the LEO computer, dated 19th October 1954 to 25th March 1955.

Includes entries:
NB19-002: October 19, 1954. Setting up marginal test voltage
NB19-005: October 22, 1954
NB19-006: October 24, 1954
NB19-009: October 25, 1954
NB19-010: October 27, 1954
NB19-011: October 28, 1954
NB19-014: Progress Report
NB19-015: November 2, 1954
NB19-016: November 5, 1954
NB19-017: Practical Work / Urgent Mechanical Work
NB19-018: November 8, 1954
NB19-022: November 18, 1954
NB19-025: November 21, 1954
NB19-026: Test Programming
NB19-038: December 6, 1954
NB19-039: December 16, 1954
NB19-041: LEO I Recommendation of Staff
NB19-043: December 30, 1954
NB19-045: December 31, 1954
NB19-046: January 4, 1955
NB19-049: January 11, 1955 [misdated as 1954]
NB19-052: January 13, 1955 [misdated as 1954]
NB19-055: January 15, 1955
NB19-061: January 20, 1955 [misdated as 1954]
NB19-066: February 2, 1955
NB19-069: February 7, 1955
NB19-073: February 12, 1955 [misdated as 1954]
NB19-074: February 15, 1955
NB19-079: February 26, 1955
NB19-081: Progress 1 March (1955)
NB19-084: [Original right-hand page removed]
NB19-085: [Original left-hand page removed]
NB19-086: March 15, 1955
NB19-093: Points for Progress Meeting



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.