Notebook kept by Ernest Lenaerts during his work on the LEO computer, dated 6th July to 9th October 1950.
View the transcription for this notebook (opens as a separate document).
NB03-001: 6 Jul 1950
NB03-002: 7 Jul 1950
NB03-006: 11-12 Jul 1950
NB03-007: 12-13 Jul 1950
NB03-011: 17 Jul 1950
NB03-012: Notes on Possible Reciprocation Sequence.
NB03-013: 19 Jul 1950
NB03-015: 20-21 Jul 1950
NB03-016: Diagrams and measurements for design of bicycle trailer - non-LEO related.
NB03-017: 24 Jul 1950
NB03-018: 25 Jul 1950
NB03-019: 25 Jul 1950 (cont.) Includes to-do list for cycling/camping trip - non-LEO related.
NB03-020: 26 Jul 1950
NB03-021: Suggested Feature Programme [different handwriting, poss written on a train or similar? On/after his holiday.]
NB03-022: Fri Aug 11th. Priority of jobs [different handwriting, poss written on a train or similar? On/after his holiday.]
NB03-023: Mon 11th Aug 1950. Work commenced on Rack tests of the Coordinator
NB03-024: 16 Aug 1950
NB03-026: 17 Aug 1950
NB03-027: 17-18 Aug 1950
NB03-028: 21-22 Aug 1950
NB03-029: 22-23 Aug 1950
NB03-030: 24 Aug 1950. Parts and processes still to be tested
NB03-031: 25 Aug 1950
NB03-032: 28 Aug 1950
NB03-035: 29 Aug 1950
NB03-036: 30 Aug 1950
NB03-038: 31 Aug 1950
NB03-042: 1 Sep 1950
NB03-046: 4 Sep 1950
NB03-047: 6 Sep 1950
NB03-048: 7 Sep 1950
NB03-049: 8 Sep 1950
NB03-052: 11 Sep 1950. Moving Coil pickup diagrams. Review of Progress.
NB03-053: 11 Sep 1950 (cont.) Work on Machine
NB03-056: 11 Sep 1950 (cont.) 'TRT & JMMP returned from holiday today. I set LEO up in lights on the raster scope for their benefit and they were duly impressed'.
NB03-057: 11 Sep 1950 (cont.) Experiment to Try Out.
NB03-058: 12 Sep 1950
NB03-062: 13 Sep 1950
NB03-064: 14 Sep 1950
NB03-065: 15 Sep 1950. Refusal of SCT to accept Is
NB03-066: 15 Sep 1950 (cont.) * [EL asterisked]
NB03-067: 18 Sep 1950
NB03-070: 19 Sep 1950
NB03-071: 20 Sep 1950
NB03-075: 21 Sep 1950
NB03-077: 22 Sep 1950
NB03-079: 25 Sep 1950
NB03-080: 26-27 Sep 1950
NB03-082: 28 Sep 1950
NB03-084: 29 Sep 1950
NB03-086: 2 Oct 1950
NB03-088: 6 Oct 1950. [dated 6.9.50 instead of October in error]
NB03-093: 9 Oct 1950
NB03-094: [EL here seems to be working out patterns of lights to display a message on a machine - 'No Errors/Mistakes']
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!
Date : 6th July 1950 to 9th October 1950
Creator : Lenaerts, Ernest
Physical Description : 1 bound volume (97 pages), paper; manuscript
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.
Archive References : CMLEO/EL/NB/3
This exhibit has a reference ID of CH64749. Please quote this reference ID in any communication with the Centre for Computing History.
This document has been scanned and is available to view online.
File Size: 20.61 MB