Early
Electronic
Calculator
XONEX ELSI III / DATAEXAC Calculator

Manufacturer: XONEX
Model: ELSI III / DATAEXAC
Year: 1973
Form: Pocket
Functions: Basic four, accumulator
Number of Digits: 8
Display Type: VFI
Display:ISE DG 8F
Logic Technology: LSI
Diodes: 15
Transistors: 3
IC Complement:Rockwell 15330 PC
Batteries: 5 AA
Power Connector:7.5 VDC, + tip, DC
Tech. Data Level: 2
Tech. Data Source: RE
Tech. Data Pages: 1
Tech. Data:Schematic (pdf)

Notes:
  • To open case, remove two screws in battery compartment, release snap-tab at rear by pressing below seam.

 


- Unit Log -

Serial Number: 13343
Year of Manufacture: 1973 (IC stamped with 7332.)
Date of Receipt: 21 Apr 2001
Source: Main & 12th second-hand store.
State upon Receipt: Good physical condition. Fully functional, with manual.
Current State: Functional but intermittent/unreliable (2020 Feb). Fully functional (24 Apr 2001).


Date: 24 Apr 2001
Procedure: Cleaned.


Date: 2020 Feb
Symptoms: No display.
Analysis: No digit-scanning pulses from IC. Switcher noise on V+16 supply. Filter cap replaced, but still not operative. Eventually started working, but unreliable/flaky on e.g. M/D.



  XONEX ELSI III / DATAEXAC
Calculators | Integrated Circuits | Displays | Simulations
EEC
bhilpert