Notebook kept by Ernest Lenaerts during his work on the LEO computer, dated 2nd April to 19th October 1954.

Includes entries:
NB18-002: April 2, 1954
NB18-003: April 5, 1954: Bookmark “Tax Tables”
NB18-005: April 5, 1954: Bookmark “Check Order Request”
NB18-007: April 12, 1954
NB18-013: May 6, 1954
NB18-018: May 7, 1954
NB18-019: May 10, 1954
NB18-027: May 10, 1954. Bookmark: “Too Much to Do”
NB18-033: June 2, 1954
NB18-034: Bookmark: “Tabulator Spares”
NB18-037: Presentation of Recommendations for Computer Mark II. Bookmark: “LEO II”
NB18-042: June 18, 1954
NB18-044: June 23, 1954
NB18-046: Bookmark: “Sq Root”
NB18-052: July 13, 1954. Bookmark: “Trouble”
NB18-056: July 18, 1954
NB18-057: July 20, 1954
NB18-060: July 27, 1954
NB18-061: Bookmark: “Testing LEO II equipment”
NB18-065: August 3, 1954
NB18-068: August 9, 1954
NB18-071: September 6, 1954. Bookmark: “Improvement”
NB18-075: September 7, 1954
NB18-077: September 11, 1954
NB18-078: September 11, 1954. Bookmark: “Minerva Fire Protection”
NB18-080: September 17, 1954 and September 26, 1954. Bookmark: “Vibrator”
NB18-084: October 7, 1954
NB18-089: Mark II Marginal Testing
NB18-092: October 19, 1954. Bookmark: “Marginal tests”


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.