Clamshell computers turn 30 this year, continue to fend off tablet threat - Liliputing

Clamshell computers turn 30 this year, continue to fend off tablet threat - Liliputing: "It’s been 30 years since the first popular, portable computer with a clamshell case was released. That means the Grid Compass had a built-in keyboard and display, and you could fold the screen over the keys to close the computer up like a book."

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