Brand: | Texas Instruments |
Model: | TI-40 Solar (Second edition) |
Type: | Scientific calculator |
Picture: | |
Batteries: | Solar cell |
Lifetime: |
Introduced: 1998 Terminated: unknown |
Notes: |
This calculator is functionally similar to the TI GALAXY 40x. There
are two versions of this calculator, one with a rather square design,
and this one with rounded edges and rounded keys.
This calculator has many nice functions, including grouped functions to operate on fractions, and a nicely big backspace key. This calculator operates on solar energy only, but fortunately needs little light to operate. The "OP1" and "OP2" keys provide a form of semi-programmability. For instance, when you want to add the number "13/2" to a series of other numbers, simply type "+ 13/2 OP1". Now, when you type "5 OP1", the result will be the outcome of "5 + 13/2". Thanks, Koen van Driessen. A peculiarity, inside on the circuit board of this calculator, there's a LED. This LED operates as a zener diode to regulate the solar cell's power output (thanks Joerg Woerner). |
©2023 Ernst Mulder