Type | Programmable |
---|---|
Manufacturer | Texas Instruments |
Introduced | 1977 |
Discontinued | 1979 |
Calculator | |
Precision | 11 Floating point (within display) |
Display type | LED |
Display size | 8+2 |
CPU | |
Processor | TI TMC1503NL |
Other | |
Power supply | battery / cells |
Power consumption | 2 LR44's |
Weight | 84 grams (3.0 oz) |
Dimensions | 147 mm × 71 mm × 22 mm (5.8 in × 2.8 in × 0.85 in) |
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. [2]
The TI-55 II (with an LCD display) was introduced in 1981, but, like many other Texas Instruments calculators of this time, suffered from serious keyboard reliability problems. Several variants of the TI-55 II exist.
The TI-55 III replaced the TI-55 II in the USA in 1986. It features redesigned keyboard mechanics, thereby eliminating the common "bouncing keys" fault of prior models. Several variants of the TI-55 III exist.
The TI-56 is a European variant of the TI-55 manufactured since 1976.
The SR-56 uses the TMC0501 scalable calculator architecture like the SR-50, SR-51 and SR-52. The TI SR-56 was followed shortly by the TI 57 which is similar in many ways but can not be connected to the PC-100 printer.
Date of introduction: May 21, 1976 Display technology: LED 10 + 2 Size: 5.8" x 3.:;2" x 1.3" 147 x 81 x 32 mm. Weight: 8.5 ounces, 240 grams Jmm Manufacturer: Texas Instruments
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
Texas Instruments Incorporated (TI) is an American multinational semiconductor company headquartered in Dallas, Texas. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces digital light processing (DLP) technology and education technology products including calculators, microcontrollers, and multi-core processors.
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The TI-92 series are a line of graphing calculators produced by Texas Instruments. They include: the TI-92 (1995), the TI-92 II (1996), the TI-92 Plus and the Voyage 200 (2002). The design of these relatively large calculators includes a QWERTY keyboard. Because of this keyboard, it was given the status of a "computer" rather than "calculator" by American testing facilities and cannot be used on tests such as the SAT or AP Exams while the similar TI-89 can be.
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