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Created by Douglas Engelbart, it had two wheels that were at 90 degrees of each other.
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The model is called IBM 5100 created by IBM it weights 55 lb. and cost from $8,900-$20,000
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It was modeled and hand built by Steve Wozniak it was pretty much a motherboard with a processor.
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Created by Bill Moggridge, it weighted 11lb and didn`t start selling until 1982 for $8-$10,000.
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Created by IBM and the model was called IBMD5150
