1900-1800 BCE
The wedge-shaped cuneiform on this Assyrian tablet is actually early legalese.
1700s
Erasable slates used by schoolkids put a premium on memorization.
1888
A paper mill employee cut, ruled, and bound reject sheets to create the legal pad.
1993
The Apple MessagePad—and the Newton OS—almost recognized handwriting.
1987
Star Trek introduced the PADD — Personal Access Display Device.
Illustrations: Elizabeth Traynor
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