Texas Instruments TI-30XIIB


Brand: Texas Instruments
Model: TI-30XIIB
Type: Scientific calculator
Picture: TI-30XIIB
Batteries: Solar cell + CR2025 x 1
Lifetime: Introduced: 1999
Terminated: unknown
Notes: The TI-30 series started with the TI-30, an ordinary scientific LED calculator. But Texas Instruments kept extending this line, turning it not into just a model number but a whole calculator series. Trying to make it the non-programmable scientific calculator for school use.

So far I’ve found mention of the following types (probably incomplete):

The TI-30XIIS and its variant, the TI-30XIIB which has a different colour scheme and no solar cell, introduced in 2005 is still for sale as I write this in 2024.

The "F◄►D"-key (and other fraction keys) can be used to turn decimals into fractions and vice versa. For instance, type the number ".125" followed by the "F◄►D"-key and the equivalent fraction "1/8" is shown.

This is a scientific calculator with statistical functions and five memory locations "A, B, C, D and E". To enter exponentials an extra keypress is required, "EE" is the "2nd" function of "x-1".