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Lenaerts Notebook 37 (18 July - 30 Oct 1962)
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Notebook kept by Ernest Lenaerts during his work on the LEO computer. Includes entries: NB37-001: Front cover
NB37-002: Cost of improvements to library
NB37-003: July 18 1962, printing tests and troubleshooting at Ilford and Edmonton, pack slip damaging tapes
NB37-004: July 19 1962, visit to Ilford, hub reset on Decca machines and new spools improving the spooling
NB37-005: July 20 1962,investigating package contact problems on LEO III/1
NB37-006: LEO II tape problems
NB37-007: July 23 1962,to do list, photographing waveforms
NB37-008: Format control on Analex including tape thickness
NB37-009: Social club, desirability of getting more sections of company involved in running it
NB37-010: Dance to be organised
NB37-011: July 26 1962, LEO social club at Minerva Road, LEO II/7 progress, LEO II/9 tape problems
NB37-012: September 15 1963 [error for 1962 or later addition?]
NB37-013: Books and other items for library, followed by 12 blank pages
NB37-014: Description of high speed camera [Cassor] which could be used for capturing oscilloscope traces
NB37-015: Detailed description of loading film into the camera
NB37-016: July 27 1962, allocating people to tasks and tests
NB37-017: Items for [library]
NB37-018: Items for library again
NB37-019: August 1 1962, Ministry of works contact, continuous stationary delivery, [rep to 'Proceedings of the Institute of Radio Engineers']
NB37-020: Library layout
NB37-021: Measuring movement of tape reading head
NB37-022: Estimates for Trafford tile roofing, diagram [tape head]
NB37-023: Paper standards and research, diagram [roofing]
NB37-024: Maintenance tasks for LEOIII/2
NB37-025: Reporting component failures, Decca data [Labs] contact
NB37-026: Library colour scheme, with diagrams
NB37-027: [tape head] diagram, proposed fault numbering system for LEO III/1 , list of magnetic tape faults
NB37-028: Paper tape usage, [continuous stationary]
NB37-029: IEE publications and computer abstracts
NB37-030: Magnetic tape head measurements, valves on LEO II/1
NB37-031: Visit to Decca, tape head string, cleaning
NB37-032: Tape head gap test results
NB37-033: Inferior diodes, issues raised at [engineering] meeting
NB37-034: Part [for LEO II/1] standards for magnetic tape and some measurements
NB37-035: August 28 1962, more tape observations, temperature issues at Edmonton [BOC]
NB37-036: Edgar Steiner, formation of LEO computer Social Group
NB37-037: August 30, suggestions that Edgar Steiner might advise on continuous stationery. August 31 1962, vault temperature at Edmonton
NB37-038: Edmonton problems continued, equipment to be returned and retested [diagram faulty valve positions]
NB37-039: TSU [printing] test, valve temperature and valve screen [resistors]
NB37-040: List of people on staff [committee], TSU test itinerary
NB37-041: List of valve types with comments on performance, card tables for lunch break
NB37-042: LEO II problems
NB37-043: Meeting on LEO II problems, Wireless World reference headphones, thermostat and other items with price
NB37-044: Library Committee Agenda, discussion of valve supply and maintenance
NB37-045: Effect of valve screening, list of some LEO IIs dates and [?]
NB37-046: Ampex tape deck head life
NB37-047: September 24 and September 27 1962,trial of [?] , [temperature] measurements
NB37-048: List of items for [meeting], list of tasks; library and valves
NB37-049: October 2 1962, training for R.M. Taylor, paper sizes
NB37-050: List of tasks, observations to record on quality of printing
NB37-051: Measuring linearity of printing, meeting about LEO IIIs
NB37-052: List of issues for investigation
NB37-053: Experiments with EL34 screening, flowers and other items, job opportunities for Paul
NB37-054: Timetable for one week
NB37-055: Visit to see ICT 1101 [valve?] and 1500[RCA transistor design ?] computers, using analex printer with bad linearity
NB37-056: October 17 1962, possibility of paper which could be printed limp and subsequently stiffened
NB37-057: Discussion of printing documents upside down and reversing sequence on tape
NB37-058: October 19 1962, actuators problems, measurements and maintenance
NB37-059: Number/codes[?], damage to magnet on dismantling [actuator]
NB37-060: October 22 1962, actuator types, price and life, Analex printer tests
NB37-061: Thyratron tests, transistor (2G302) damage on ampex
NB37-062: October 23 1962, roller [fluid] denied because of cost, suggestion for mechanical alternative [with diagrams]
NB37-063: Heater alarm, Sangamo Weston magnetic tape, AC rectifier, subjects for visit to Decca
NB37-064: LEO II/7 vault heater
NB37-065: October 26 1962, Analex printer report
NB37-066: October 26 1962, Analex cont. LEO III meeting; list of peripherals to discuss
NB37-067: Newcastle site problems, delivery of LEO II/3 to Dunlop Nov, LEO III/1 weaknesses, Analex printer
NB37-068: Sunday at Edmonton (British Oxygen], vault temperature measurements with heaters
NB37-069: Meeting with Gilbert postponed, list of issues, investigation of typefaces
NB37-070: Points for discussion at Hartree, diagram for automatic switchover
NB37-071: Upside-down page [list of expenses]
NB37-072: Inside back cover, other financial calculations
NB37-073: Back cover
Date : 18th July 1962 to 30th October 1962Physical Description : 1 bound volume (82 pages), paper; manuscript Provenance : Archive References : CMLEO/EL/NB/37 , CCH LI 57 This exhibit has a reference ID of CH76460. 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.
Copyright Ernest Lenaerts File Size: 92.46 MB
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