The initial slide rule, the SR-10 is a four-function machine with additional function keys for reciprocals, squares, and square roots. Because both entry and display can accommodate a two-digit exponent, the new TI calculator can handle eight significant digits in scientific notation through nearly a two-decade range, positive and negative ...

Comparing the feature sets of the TMS0106 (TI-3500), TMS0120 (SR-10), and TMS0602 (SR-11) shows the limitations of the TMS0100 and explains the move from Texas Instruments towards architectures with scalable ROM configurations like the TMS0200 Building Blocks for Desktop Calculators introduced in 1973 but most important to the TMC0500 Building B...

Texas Instruments described the SR-10 as an “electronic slide rule calculator,” hence the “SR” in the name. The first version of the device, introduced in 1972, did not have the mark SR-10 on the keyboard. The second version (introduced 1973) and the third (introduced 1975) did. This is an example of the first version.

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The SR-10 and 11 are notorious; the silver trim is almost always worn on these models. An SR-10 in near mint condition would definitely qualify as "Difficult". The SR-50, 51, and 52 suffered from paint wear around the switches and later TI models …

The SR-10 was introduced only few month after TI's first calculator, the famous Datamath or TI-2500. Today we wouldn't call it a Scientific calculator, but it used the scientific notation on the display. Texas Instruments targeted the slide rules, guess what the abbreviation "SR" in the designation stands for.

The SR-10 was introduced only few month after TI's first calculator, the famous Datamath or TI-2500. Today we wouldn't call it a Scientific calculator, but it used the scientific notation on the display. Texas Instruments targeted the slide rules, guess what the abbreviation "SR" in the designation stands for.

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The SR-10 is a truly ancient Texas Instruments calculator. It is one of the first "electronic slide-rule" calculators, and predates the first true scientific calculators from this company. It does, however, have some scientific features, such as an exponential display and keys for calculating the reciprocal, square, and square root.