An astonishing old calculator - Numberphile
Cliff explains his passion for two Friden EC-132s. Extra discussion and explanation at: LINK More links & stuff in full description below ↓↓↓ More Cliff videos: http://bit.ly/Cliff_Videos...
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In 1963, if you wanted to do calculations, you had a mechanical calculator like this wonderful Odhner Brunsviga, but it's all mechanical. This guy, 1962–63, Bob Ragen, worked at Friden Incorporated, maker of mechanical calculators, had this idea— let's invent an all-electronic calculator! Indeed, nothing mechanical in it. It's all electronic, and I've been lucky enough to not just get one of them, but to meet and talk with the late Bob Ragen, who came by and helped me repair two of them. Signed by Bob Ragen, August 2006. This is a cathode ray tube out of an oscilloscope, four circuit boards. It's all discrete transistors. Each one of these is one transistor. Each of these probably cost five or ten dollars in 1962. Germanium tra...
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In 1963, if you wanted to do calculations, you had a mechanical calculator like this wonderful Odhner Brunsviga, but it's all mechanical. This guy, 1962–63, Bob Ragen, worked at Friden Incorporated, maker of mechanical calculators, had this idea— let's invent an all-electronic calculator! Indeed, nothing mechanical in it. It's all electronic, and I've been lucky enough to not just get one of them, but to meet and talk with the late Bob Ragen, who came by and helped me repair two of them. Signed by Bob Ragen, August 2006. This is a cathode ray tube out of an oscilloscope, four circuit boards. It's all discrete transistors. Each one of these is one transistor. Each of these probably cost five or ten dollars in 1962. Germanium tra...
