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Archives: Portfolio

A portfolio type for featuring items in your portfolio.

The Sliding Gunter

Portfolio 1

A fascinating transitional device

Stephenson’s little adder

Portfolio 3

Agents wanted!

Alpina or Curta?

Portfolio 5

Battle of the handheld calculators

A sense of wonder

Portfolio 7

Some “Wow!” moments from my life around computers

Small Blue Planet

Portfolio 9

The impact of Apollo 8 on our planetary self-image

Courvoisier’s spiral slide rule

Portfolio 11

A neat solution to the turn problem

My take on the Marble Run concept

Portfolio 13

Fun to build, fun to play with!

You did WHAT on a Commodore 64?!

Portfolio 15

Oh, yes, I sure did.

A new mathematical robot

Portfolio 17

ENIAC, in real time!

Building a Roubo Workbench

Portfolio 19

A woodworker’s rite of passage

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