But we can guarantee that every product included here has been tried and tested by real people, reviewed by experts, and recommended by real people. Most of the items mentioned are not hand-picked. How we Picked the Top texas instruments scientific calculators Important Aspects to Consider When Choosing texas instruments scientific calculators: Table feature – Easily explore an (x,y) table of values for a given function, automatically or by entering specific x values.Fraction features – View and perform fraction computations and explorations in familiar textbook format.Table feature – Easily explore an (x, y) table of values for a given function, automatically or by entering specific x values.Scientific Notation Output – View scientific notation with the proper superscripted exponents and see the output in scientific notation.All mode settings are located in one central place, the mode screen.Menus – Easy to read and navigate pull-down menus similar to those on a graphing calculator.Previous Entry – Lets you review previous entries and look for patterns.MATHPRINT mode for input in math notation, including pi, square roots, fractions, percent’s and exponents plus math notation output for fractions.Same functionality as the TI-34II Explorer plus display and feature enhancements.4-line display enables scrolling and editing of inputs.When the chip folks make an eval board it makes a lot of sense for them to use their own parts, its a lot cheaper, they know their parts, it is all in house, and there are no battery or other requirements, cost if anything and using their own is often cheaper so even if more complicated or not the right solution they will use another one of their parts. You will get the occasional CEO that dictates for a year or so or a product or two that we must use our sister divisions products, often destroying a product line or two, sometimes killing a division, but unless there is such a mandate the divisions likely were at one time completely separate companies acquired at different times and other than the logo on the front of the building have absolutely nothing to do with each other, and unless forced to do not communicate with each other in any way. And a completely separate division of the corporation where the guts are not normally visible to the customers, and price and battery life, etc are a major factor. You are confusing development boards which are really eval boards which demonstrate that vendors product. Are there some weird politics at play that we don't know about? Are TI products too readily available, so they are afraid of cheap Chinese clones appearing with pirated firmware? Are the reasons purely economic? - I can't imagine the couple of cents in parts per unit difference being a big issue since the margins are probably in their built-in CAS software. I have to imagine that the latest versions of their CAS (Computer Algebra System) software is mostly written in portable code - and they had no problem porting it to the relatively obscure LSI ZEVIO architecture for their nSpire series (which is based on ARM9 + proprietary DSP), so it does not seem that the limitation is technical. Their older designs seem to use Z0 CPUs, while their more recent stuff uses processors from LSI logic disassembled photos here. Therefore, it seems odd that a company that makes a large range of microcontrollers and CPUs ranging from the 16-bit MSP430 to high end ARM-based OMAP processors would completely avoid their own designs in their line of popular graphing calculators. This seems true of TI's development products as well, for example the Beagleboard, which was developed with TI support, seems to use a fair amount of "in-house" components (TI's DVI transmitter as well as their power management chip) original Beagleboard. For example, the Analog Devices Blackfin development board uses another Blackfin processor for the JTAG adapter, as well as numerous AD components in the analog signal chain ( see board photo here). Most semiconductor manufacturers seem particular about using their own products when possible.
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