The TI-55 is a programmable calculator first manufactured by Texas Instruments in 1977. It has an LED display, [ 1 ] and weighs 6.4 ounces (180 grams). It is programmable to hold up to 32 key-codes that allow the user to repeat simple calculations with different values.

The TI-55 was introduced shortly after [or before - continue here] its sibling MBA with advanced financial and statistical capabilities. From a technical aspect the TI-55 continued the ideas of the SR-40 with three main differences: The LED-stick using LED chips mounted and bonded to the printed circuit board (PCB), was expanded to 12-digits ...

2021年10月2日 · The TI SR-50 adds trigonometric and hyperbolic functions to the technology available on the TI-2500 Datamath™ calculator, as well as logarithms and their inverses. More History at Other Later LCD Models page

Pushing the “2nd” key allows keys to serve a “dual function,” which is denoted by text above the keys. The calculator provides a wide variety of statistical, trigonometric, hyperbolic, logarithmic and exponential functions, as well as conversions of units of measure. The calculator has limited programming capabilities.

The SR-50 was Texas Instruments' first scientific pocket calculator with trigonometric and logarithm functions. It enhanced their earlier SR-10 and SR-11 calculators, introduced in 1973, which had featured scientific notation, squares, square root, and reciprocals, but had no trig or log

2001年12月25日 · The first calculators manufactured by Texas Instruments used standard AA-sized NiCd rechargeable batteries. Replacement of bad NiCd's of your Datamath or SR-10 is very easy, dozens of companies sell them even today. Later calculators starting with the SR-50 to the TI-30 use customized Battery Packs (BP's).

The SR-52 was an important milestone in the history of programmable calculators based on the TMS0500 Building Blocks for Scientific and Programmable Calculators introduced in January 1974 with the SR-50 and leading to the legendary TI-59. The remarkable SR-52 uses most features of the TMC0500 Architecture.

TI-55是由Texas Instruments于1977年首次制造的可编程计算器。 它具有LED显示屏，重6.4盎司（180克）。 可编程最多可容纳32个密钥编码，以允许用户重复具有不同值的简单计算。

This is the enhanced version of an older LED calculator, the TI-55. The calculator has a slanted display and a beautifully expensive look to it. The scientific part of this calculator is quite thorough, with many statistical functions (marked in red on the …

Among the first Texas Instruments programmable calculators with a liquid crystal display was a series of machines that built upon the earlier success of the TI-55 and the MBA. These machines were characterized by a clean keyboard layout and a very simple programming model, capable of storing only a few dozen program steps.