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David B. Tuttle, Principal Engineer  
Dave.Tuttle@alum.mit.edu  
The Way Things Worked - not so long ago . . .

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Machinery & Systems – 50+ Years Personal Experience
RedArrow Mechanical Calculators – "hands-on" experience
RedArrow Electronic Calculators – the first handhelds
RedArrow High School – College – Career, 1960s – 2015+ New!
RedArrow System/360 Photo Gallery, 1964 – 1972 New!
Communication Protocols – Futures of the Past
RedArrow IBM Systems Network Architecture, 1976
RedArrow CCITT X.25 and Friends, 1980
RedArrow TCP/IP, Open Systems, MAP/TOP and PRIMOS®, 1985 – 1989
Data Communications & Networking – 30+ years ago
PDF Ungermann-Bass Acronym Dictionary, collected 1985 – 1999
RedArrow IEEE & ANSI Standards, FAQs and Buzzwords
(copied from http://standards.ieee.org and edited, Jul-1999)
RedArrow Internet Dial-Up Protocols, RFCs & Standards
(verbatim from http://www.ietf.org, Sep-1999)

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This page last updated on  24-Feb-2013.