Early Calc and Computers Selection:
|Product Number: 9821A|
|Division: Calculator Products|
|Original Price: $4975|
|Catalog Reference: 1975, page 534|
The 9821A was identical to the 9820A except it had a cassette tape mechanism for mass storage instead of a magnetic card reader.
The best resource for repairing these computers is Tony Duell's 98X0 repair manual which can be found here.
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