IBM 1401

Team Chief Robert Garner robgarn @ mac . com CHM Staff Liaison Emily Beeston (650) 810-0133 direct Web "Master" Samuel Wainwright sgw2129 @ gmail . com Web Site Administration was Ed Thelen General Pictures Recent visitors experiencing the memorable sights and sounds of our two working IBM 1401 mainframes at the Computer History Museum. Grand Opening, Bill Worthington Jim Strickland That looks like fun, can I try ?? IBM 1401 Visitor Experience Room We are standing midway on long side. Steve Russell w tape cable Ken Ross & Dave Bennet Families Steve & Janet Wozniak More Families Groups Families WOW !! More Demo Photos , Thank you notes :-)) A "typical" demo report Introduction , Project , & Daily Reports , 1403 printer 1401 Character Sets Unit Record Equipment 1401 Inventory/location Origins & Design also People and stories 1401 Stories 1401 Follow On 729 tapes Data Processing Software Applications, Inventories, Demo Software Other "Hidden Figures", the movie, support Miniature Model of 1401 System What is an IBM 1401? Power On/Off, Boot a 1401, Tool Kit Auxiliary Equipment 1401 Software Devel. & ROPE Demonstration Software Continuing Maintenance YouTube Presentations Full 3D working simulation of a 1401 system Core Memory Software - Utilities & Lang. Bios of Restorers/Demonstrators , 1950s Hw/Sw Developers 1401 System, Patents, Docs, ALDs , 1401 Processor ,1406 Memory SMS Cards General Hardware , Maintenance Johann Johannsson & father Johann Gunnarsson 1401 Movies, Music, Sounds, and Videos 1402 Card Reader/Punch Components/Devices Related Restorations & 1440 MajorEvents , Nov 10, 2009 Reunion & 50th Anniv. Bitsavers documents "... the most charming computer ever invented, ..." as per Dan Swinehart IBM 1401 General Information D24-1401-1 No mouse delay problems with a 1401 system :-)) Early Business Computing , C-Span, seen March 4, 2017, 13 minutes, with Bill Worthington & Pat Buder An introduction to the 1401 Demo Room , 11 minutes, by Marc Verdiell, April 2016 Can the IBM 1401 be considered the very first fully transistorized (commercial) computer? NO - About the Computer History Museum s IBM 1401 Machines by Guy Fedorkow 12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe by Ken Shirriff The Legendary IBM 1401 Data Processing System The development of the most popular computer of the 1960s and the story of its restoration at age 50 Case-study: Development of the IBM 1401 , Population 1401 vs others off-site, local copy 1401 Background and Introduction paper A YouTube of the excellent 1960 IBM 1401introduction in Europe in French (with English subtitles) Why was the 1401 such a Run Away Success? 1401 Processor for sub-assemblies such as memory, TAU, power supplies, wire relays, ... see Components/Devices "Stored Program Accounting And Calculating Equipment" (SPACE), Prelim Eng Desc June 5, 1958m from C. E. Branscome, Manager, Accounting Machine Development Expanded SPACE Oct 7, 1958, F. O. Underwood, Advisory Engineer Card Gates and Card Comments Debugging the 1959 IBM 1401 Computer ... , and IBM 1401 Restoration Team: A Day at the Office YouTube videos by Marc Verdiell, About 1401 Design Memos , A Selection of 1401 Documents "IBM 1401 Data Processing System Instruction Logic" R25-1496. including print control logic starting page 88 The IBM 1401, its internal use of "qui-binary"