Early
Electronic
Calculator		 Texas Instruments TI-1025 Calculator

Manufacturer: Texas Instruments
Model: TI-1025
Year: 1979
Form: Pocket
Functions: Basic four, memory, percent
Number of Digits: 8
Display Type: VFM
Display:itron FG85C1
Logic Technology: LSI
Diodes: 4
IC Complement:Texas Instruments TMC 0923 NL
Batteries: 9V
Power Connector:9 VDC, + tip, sub-mini audio, non-isolating
Tech. Data Level: 2
Tech. Data Source: RE
Tech. Data Pages: 1
Tech. Data:Schematic (pdf)

A bit of a diversion for Texas Instruments into vacuum-flourescent displays, in contrast to the LED displays they used in most of their pocket calculators of the period.

- Unit Log -

Serial Number: (not specified)
Year of Manufacture: 1979 (IC stamped with 7940, plastic bottom stamped with 45 79.)
Date of Receipt: 21 Apr 2001
Source: Main & 12th second-hand store.
State upon Receipt: Good physical condition. Fully functional.
Current State: Fully functional (24 Apr 2001).


  Texas Instruments TI-1025
Calculators | Integrated Circuits | Displays | Simulations
EEC 		bhilpert