Texas Instruments TI-66 Scientific programmable calculator

General specifications
Type Scientific programmable calculator
Production years 1982 - 1985?
New price -
Operating system n.a.
Chipset/CPU -
I/O Printer port
Performance index 1
Entry method Algebraic with precedence
Precision 13 digits
Advanced functions

Forensic result 9.000002294775

Scientific programmable calculator: Texas Instruments TI-66
Programming model Partially merged keystroke
Programming features

Program display Mnemonic
Program editing Auto-insert program entry
Programming 512 program steps
Data 64 numbers
Functions + -
Type LCD
Size 10(8+2) digits
LWH 8912712 mm
Weight 113 g
Batteries 2LR44
External power -
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Scientific programmable calculator: Texas Instruments TI-66

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This page was last modified on May 11th, 2008

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2 Responses so far

I have been using my TI-66 since purchased, I believe in 1984 on a regular basis and has yet to fail me.
March 18th, 2010
TI-66 has 14 segments (Alphanumeric-display) Just like the Hp-41 and other starburst display calculators! It was first used in early 1980, with 47 with on/off keys!

It also talks just like speak & spell!
February 21st, 2010