Texas Instruments would probably prefer to be known for its pioneering work in transistors and integrated circuits. The company makes advanced semiconductor products that are used in cellphones, satellites, cars, computers and Hi-Def TVs. They also make an incredibly useful $25 calculator that belongs on the desks of everyone who buys and sells things.TI's BA-20 "Profit Manager" has been made for 10 years or more in several versions, but its important special functions have remained, providing easy answers to pricing decisions for merchants.
Preprogrammed functions quickly provide cost-sell-margin solutions; enter any two variables and the third appears instantly.
If you know your cost, and desired profit margin, you tap some brainy buttons and it tells you how much to sell an item for.
If you know your cost, and the selling price, you tap some brainy buttons and it tells you what your margin is.
Less useful, if you know your selling price, and your margin, you tap some brainy buttons and it tells you what your cost might have been.
It's solar powered, has readable buttons and display digits, and does basic math, too. My oldest one even has a digital clock. Highly recommended. Available at Amazon, Staples and other office suppliers.
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