Rare Apple 1 computer goes under the hammer

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Software on a cassette

The Apple 1 did not have an operating system, only a so-called monitor program which provided the interface between keyboard entry – CPU – memory and monitor exit. Anymore sophisticated software system – like Basic – had to be loaded on cassettes. Therefore, a cassette interface- card, offered optionally by Apple, was required. Basic was available for the Apple 1 at the beginning of 197.  

The set contains the original card and the 6502 micro processor in rare white ceramic design.

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