Early
Electronic
Calculator		 Addmaster Simplex 12 Calculator

Manufacturer: Addmaster
Model: Simplex 12
Year: 1973
Form: Desktop
Functions: Basic four, constant
Number of Digits: 12
Display Type: PPX2
Display:Burroughs BR 13251 (Panaplex II)
Logic Technology: LSI-2
Diodes: 36
Transistors: 9
IC Complement:EA EA7022
EA EA7023
Tech. Data Level: 2
Tech. Data Source: RE
Tech. Data Pages: 1
Tech. Data:Schematic (pdf)

- Unit Log -

Serial Number: 5614
Year of Manufacture: 1973 (Integrated circuits stamped with 7309 and 7312)
Date of Receipt: Jan 2000
Source: Haggerty warehouse.
State upon Receipt: Very dirty, functional.
Current State: Non-functional.

Date: Jan 2000
Procedure: Cleaned.

Date: Jan 2000
Procedure: IC blown.

Date: Jan 2000
Procedure: Display removed for use in Eldorado 8K.


  Addmaster Simplex 12
Calculators | Integrated Circuits | Displays | Simulations
EEC 		bhilpert