Computer Trees

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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

click on image for larger scale NSF Computer Family Tree Computer Structures Principles and Examples, Be...-1
full scale as provided

click on image for larger scale Bell & Newell - Figure 2 Set Timelines
- by Originator

click on image for larger scale Bell & Newell - Figure 2 Set Timelines
- by Technology

click on image for larger scale Bell & Newell - Figure 2 Set Timelines
- by Word Size

click on image for larger scale Bell & Newell - Figure 2 Set Timelines
- Mechanical & Electrical & Electronic

click on image for larger scale NSF Computer Tree, Bell additions-2015-2-

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

Originated March 22, 2015

click on image for larger scale	The Computer Tree 1960 based on NSF Tree (useful, but not correct) full scale as provided
click on image for larger scale	NSF Computer Family Tree Computer Structures Principles and Examples, Be...-1 full scale as provided
click on image for larger scale	Bell & Newell - Figure 2 Set Timelines - by Originator
click on image for larger scale	Bell & Newell - Figure 2 Set Timelines - by Technology
click on image for larger scale	Bell & Newell - Figure 2 Set Timelines - by Word Size
click on image for larger scale	Bell & Newell - Figure 2 Set Timelines - Mechanical & Electrical & Electronic
click on image for larger scale	NSF Computer Tree, Bell additions-2015-2-