Input and output operations on Orion using Time Sharing.

LAV/1/1/UK3/01/01 Lyons Electronic Office: How LEO works. Frank G Casey.

LAV/1/1/UK3/01/02 General photo of the LEO I installation

LAV/1/1/UK3/01/03 Photo of LEO I console

LAV/1/1/UK3/01/04 Specimen week of LEO operation (w/e 27/1/57).

LAV/1/1/UK3/01/05 General details of LEO II.

LAV/1/1/UK3/01/06 LEO II

LAV/1/1/UK3/01/07 Operating and engineering experience gained with LEO. J M M Pinkerton.

LAV/1/1/UK3/01/08 LEO (Lyons Electronic Office). J M M Pinkerton & E J Kaye.

LAV/1/1/UK3/01/09 Fundamental principles of expressing a procedure for a computer application. T R Thompson.

LAV/1/1/UK3/01/10 Performance problems with LEO I. J M M Pinkerton.

LAV/1/1/UK3/01/11 Memo from G F Corbin (Chairman, Domestic Administration Committee, Metal Box Co.) on Automation.

LAV/1/1/UK3/01/12 Report on LEO Programming Course, 7/1/1957 to 8/2/1957.

LAV/1/1/UK3/01/13 Original engineering drawings.

LAV/1/1/UK3/01/14 LEO III data processing system.

LAV/1/1/UK3/01/15 Lector document reader.

LAV/1/1/UK3/01/16 The evolution of design in a series of computers: LEO I - III. J M M Pinkerton.

LAV/1/1/UK3/01/17 Taming Leo - overcoming the inherent unreliability of Leo I. J M M Pinkerton.

LAV/1/1/UK3/01/18 Putting computers to work. David Caminer.

LAV/1/1/UK3/01/19 John Pinkerton and Lyons Electronic Office. M V Wilkes.

LAV/1/1/UK3/01/20 LEO and the computer revolution. David T Caminer.

LAV/1/1/UK3/01/21 Behind the curtain at LEO: a personal reminiscence. David T Caminer.

LAV/1/1/UK3/01/22 List of papers about LEO Mark I, Mark II and Mark II.

LAV/1/1/UK3/01/23 Record of LEO II and LEO III installations.

LAV/1/1/UK3/01/24 Anecdotes of LEO I and II. Colin Tully.

LAV/1/1/UK3/01/25 The early history of LEO: the first data processing computer. John M M Pinkerton.

LAV/1/1/UK3/01/26 Early history of J Lyons & Co.

LAV/1/1/UK3/01/27 50th anniversary of LEO I's first program.

LAV/1/1/UK3/01/28 50th anniversary of the Lyons 'Bakeries' job going live on LEO I - (and the first payroll).

LAV/1/1/UK3/02/01 Proposals for the establishment of a centre for the construction and use of an electronic computer. A D Booth.

LAV/1/1/UK3/02/02 Birkbeck family of computers. Roger Johnson.

LAV/1/1/UK3/02/03 An evaluation of the ARC project. S H Lavington.

LAV/1/1/UK3/02/04 HEC general purpose electronic computer: advance information.

LAV/1/1/UK3/02/05 Planned production control.

LAV/1/1/UK3/02/06 The HEC computer. R Bird.

LAV/1/1/UK3/02/07 Collection of notes and articles on HEC, from Brian Dagnall (who worked for R L Michaelson at BTM).

LAV/1/1/UK3/02/08 Collection of personal and technical notes on HEC2M (and DEUCE), from David Hanley.

LAV/1/1/UK3/02/09 HEC cut the cost of commercial computing. Raymond Bird.

LAV/1/1/UK3/02/10 Collection of notes from Hamish Carmichael on early BTM calculators.

LAV/1/1/UK3/02/11 List of ICT 1201 computers delivered in the period 1956 - 1958.

LAV/1/1/UK3/02/12 Newspaper article about the restored ICT 1301 computer in Kent.

LAV/1/1/UK3/02/13 ICT 1900 series: PLAN instruction reference card.

LAV/1/1/UK3/02/14 Example of 1905F log, using multiplexor.

LAV/1/1/UK3/02/15 Hand-annotated console output and lineprinter listing.

LAV/1/1/UK3/02/16 Two decks of punched cards.

LAV/1/1/UK3/02/17 1900 codes.

LAV/1/1/UK3/02/18 5-bit code.

LAV/1/1/UK3/02/19 List of some 1900 library programs

LAV/1/1/UK3/02/20 Description of #QMCN library program

LAV/1/1/UK3/02/21 Update [PROGRAM SUBS] using #XPMU

LAV/1/1/UK3/02/22 SCAN

LAV/1/1/UK3/02/23 Lineprinter control loops.

LAV/1/1/UK3/02/24 EDS initiator: provisional issue

LAV/1/1/UK3/02/25 Operating instructions for A.D.D. GEORGE ONE jobs.

LAV/1/1/UK3/02/26 Accumulated deliveries of ICT 1900 Series.

LAV/1/1/UK3/02/27 (a) Notes on some important events; (b) ICT computers in use at November 1966 excluding all the 1900 Series; (c) covering letter.

LAV/1/1/UK3/02/28 3 photos of an ICL 2980 installation.

LAV/1/1/UK4/01/01 A case study in commercial data processing. D S Greensmith & J G Thompson.

LAV/1/1/UK4/01/02 A transistorized magnetic core store. D Bray & A C Conway.

LAV/1/1/UK4/01/03 Emidec 2400 data processing system. General description.

LAV/1/1/UK4/01/04 EMIDEC 2400s are still giving sterling service. Keith Crook.

LAV/1/1/UK4/01/05 2 photos (3 copies each) of the EMI speech recognition system VIP100.

LAV/1/1/UK4/02/01 The METROVIC 950

LAV/1/1/UK4/02/02 Inbuilt capacity for growth

LAV/1/1/UK4/02/03 David Edwards' notes on the AEI 1010.

LAV/1/1/UK4/03/01 Historical notes from Don Hunter, concerning STEP 1, STANTEC 1 and STANTEC ZEBRA.

LAV/1/1/UK4/03/02 Stantec Zebra electronic computer

LAV/1/1/UK4/03/03 Stantec Zebra electronic digital computer.

LAV/1/1/UK4/03/04 Tony Davie's comments on Stantec Zebra.

LAV/1/1/UK4/04/01 The Decca Digital Data Processor for real-time processing.

LAV/1/1/UK4/04/02 Computer magnetic tape unit Decca type 4000.

LAV/1/1/UK4/04/03 Photos and brief background to a Decca computer.

LAV/1/1/UK4/05/01 General description.

LAV/1/1/UK4/05/02 TAC SR00 - 3301: TAC functional block diagram.

LAV/1/1/UK4/05/03 Letter from John Blackburn.

LAV/1/1/UK4/05/04 CD of 29 photos of the TAC system at TNMOC, Bletchley Park.

LAV/1/1/UK4/05/05 E-mail from Arthur Young to John Blackburn

LAV/1/1/UK4/05/06 Three documents on TREAC

LAV/1/1/UK4/05/07 ICCE (Imperial College Computing Engine)

LAV/1/1/UK4/05/08 Six documents on MOSAIC