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Archives: Portfolio

A portfolio type for featuring items in your portfolio.

Cloning a Vibroplex bug

Portfolio 1

Another triumph of improvisation!

A computer with a dial

Portfolio 3

Building a computer in 1967

The first PDA

Portfolio 5

The Apple Newton MessagePad

Mahogany and Celluloid

Portfolio 7

The K&E model 4053-3

Hard Fonts

Portfolio 9

Before inkjet, before laser…

Ivory sector

Portfolio 11

Earlier than the slide rule…

Odhner Pinwheel Calculator

Portfolio 13

Carrying fine childhood memories…

Yiddish radio geeks of a bygone world

Portfolio 15

A glimpse of Warsaw’s radio amateurs in 1926

The Correntator slide adder

Portfolio 17

A simple adder with a neat trick

Not a Toy!…

Portfolio 19

The Kes-Add pocket adder

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