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Archives: Portfolio

A portfolio type for featuring items in your portfolio.

Ivory sector

Portfolio 1

Earlier than the slide rule…

Odhner Pinwheel Calculator

Portfolio 3

Carrying fine childhood memories…

Yiddish radio geeks of a bygone world

Portfolio 5

A glimpse of Warsaw’s radio amateurs in 1926

The Correntator slide adder

Portfolio 7

A simple adder with a neat trick

Not a Toy!…

Portfolio 9

The Kes-Add pocket adder

An Aluminum CPU

Portfolio 11

A classic air navigation computer

Magnetic core memory

Portfolio 13

Ahhh, the memories…

The Why and How of HOC collecting

Portfolio 15

Computer History as a hobby

Prey to Oblivion

Portfolio 17

Everyday things that no one would recognize today

A visiting card

Portfolio 19

A tiny memento from the past

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