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Unicom 141 Series Calculator Operating Instructions

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Unicom 141 Calculator instruction manual. The Unicom 141 is OEM version of Busicom 141-pf, the first product to include a microprocessor (Intel 4004). This is the scan of the original manual, which contains important information about this historic machine.

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Unicom 141 · Busicom 141-pf · NCR 18-36 · Intel 4004 · MCS-4

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