Early
Electronic
Calculator		 apf Mark 51 Calculator

Manufacturer: apf
Model: Mark 51
Year: 1975
Form: Pocket
Functions: Scientific
Number of Digits: 8
Display Type: VFM
Display:(label obscured)
Logic Technology: LSI
Diodes: 6
Transistors: 3
IC Complement:General Instrument CF596
Batteries: 9V
Power Connector:9 VDC, + tip, sub-mini audio
Tech. Data Level: 1

- Unit Log -

Serial Number: J-104455
Year of Manufacture: 1975 (IC stamped with 7552, keyboard stamped with 51.2.17 .)
Accessories: With slip-style carrying case.
Date of Receipt: 09 May 2001
Source: Commercial St. second-hand store.
State upon Receipt: Good physical condition. Some rust on battery clip. Fully functional.
Current State: Fully functional (14 May 2001).

Date: 14 May 2001
Procedure: Cleaned. New battery clip installed.


  apf Mark 51
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