Peter
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introduced in October 1971 according to File:History_of_the_Information_Display_Division_-_John_Lamb,_June_1974.pdf
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Created page with "{{Instrument Sidebar |manufacturer=Tektronix |model=4912 |class=Peripheral |series= |summary=Cassette tape memory |image=Image needed.jpg |caption= |introduced=1973 |disconti..."
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