Computers
SciShow Tangents
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Community Memory - A New Way to Share Your Thoughts
Back in the 19 fifties and sixties, we were before the days of personal competers. Magnetic core memory was a grid of wires with tiny doughnuts of a seramic magnetic material called parite strung on to them. And those farite doughnuts could be magnetized and red to be either one or a zero - which are the basis of computer streak. In 19 73, some folks in berkeley, california tried an experiment putting a computer in a record store that acted as a kind of technological bulletin board. They called it community memory. You could pay a quarter or so to add a message, or you could read any messages for free. All these were
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