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Computer Trees
Full sized images from Gordon Bell

Goal of this page
Provide exposition of "Computer Trees" provided by Gordon Bell

e-mail from Gordon Bell < gbell @ microsoft . com >, Fri, February 06, 2015
All,

We just added a few of the bigger omissions to the original c1960 NSF Tree (the tree is one of the nicest I know).
The later tree based on just ENIAC is fairly inaccurate and has none of the English or Zuse machines.
It would be great to have a LCM or Shustek quality tree for all the early computers.
Bell and Newell Fig.2 pretty much has the machines on times lines with no branching or interconnects.

If your inclined, review it and make suggestions, but it really stops about 1960-62.
The goal of the additions was to get Zuse, ABC, Colossus plus a few more.
TX-0 was the only transistorized machine in the original and I started down the slippery slope adding the early transistorized (2nd Gen) machines including
CDC, DEC, PB, and SDS…. Also Atlas.

g

Gordon Bell.
Researcher Emeritus, Microsoft Research
Office: 555 California St. Suite 200; San Francisco 94104
...
http://research.microsoft.com/en-us/um/people/gbell/
http://www.TotalRecallBook.com
http://TCM.ComputerHistory.org for a visit to The Computer Museum in cyberspace

see bottom image for latest

click on image for larger scale
The Computer Tree 1960 based on NSF Tree (useful, but not correct)
full scale as provided

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NSF Computer Family Tree Computer Structures Principles and Examples, Be...-1
full scale as provided

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Bell & Newell - Figure 2 Set Timelines
- by Originator

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Bell & Newell - Figure 2 Set Timelines
- by Technology

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Bell & Newell - Figure 2 Set Timelines
- by Word Size

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Bell & Newell - Figure 2 Set Timelines
- Mechanical & Electrical & Electronic

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NSF Computer Tree, Bell additions-2015-2-



If you have comments or suggestions, Send e-mail to Ed Thelen

Originated March 22, 2015