TI-81

TI-81
A 1994 TI-81 showing graphs
TypeGraphing calculator
ManufacturerTexas Instruments
Introduced1990
Discontinued1997[1]
SuccessorTI-82
Calculator
Entry modeD.A.L.
Precision13 digits
Display size96×64 pixels, 16×8 characters
CPU
ProcessorZilog Z80
Frequency5 MHz or 6 MHz[2]
Programming
Programming language(s)TI-BASIC, Assembly
User memory2400 bytes of RAM
Other
Power supply4 AAAs,
1 CR1616 or CR1620

The TI-81 was the first graphing calculator made by Texas Instruments. It was designed in 1990 for use in algebra and precalculus courses. Since its release, it has been superseded by a series of newer calculators: the TI-85, TI-82, TI-83, TI-86, TI-83 Plus, TI-83 Plus Silver Edition, TI-84 Plus, TI-84 Plus Silver Edition, TI-84 Plus C Silver Edition, TI-Nspire, TI-Nspire CAS, TI-84 Plus CE, and most recently, the TI-84 Plus CE Python. Most of them share the original feature set and 96×64-pixel display that began with this calculator, with the exceptions of the TI-84 Plus C Silver Edition and the TI-84 Plus CE family.

  1. ^ Woerner, Joerg (2009-02-08). "DATAMATH: TI-81 (1995)". Retrieved 2013-01-27.
  2. ^ "TI-Planet's calculator comparison tool". TI-Planet.