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TI-108
The TI-108 is the least expensive, most basic, and most widely used calculator by Texas Instruments. The TI-108 is probably the most common American elementary school calculator due to low price, ruggedness, and solar panel power source. Along with the more expensive and newer TI-10, this calculator targets the K-3 student group for whom it will likely be a first calculator. The TI-15 is targeted to older students.
==History==
The TI-108 is the last member of the TI calculator family to continue a design language first introduced in the mid-1980s, with textured keys and straight edges with curved bottom corners, as well as a recessed frame around the display. This design was also shared with the landscape-aspect Galaxy line of scientific calculators, though the textured keys were not used on contemporary portrait-aspect designs due to a lack of space. The current model 108 is, at least externally, virtually identical to the original TI-108 introduced in 1990, and is the cheapest design in the TI calculator line.
Though the internal electronics are different, the TI-108 is fundamentally the same as the TI-1100II introduced in 1985, a four-function calculator with additional square root and percentage keys.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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