FutureStarr

A Cool Things to Do on a Calculator

# Cool Things to Do on a Calculator

There are plenty of things to do on a calculator, and here are just ten. It's not as if the calculator is just for basic calculations like addition, subtraction, multiplication, division, solving equations, and factoring. It's actually much more helpful.

### Use

Do arithmetic on system messages. I've heard that on some calculators you can do arithmetic on system messages like ErrOr to get things you couldn't make usually. Try using the memory recall just after you turn your calculator on. I've heard that you can get some values from the "boot up" of the calculator. This would give you weird symbols and letters unavailable elsehow. I've never gotten this to work on all of the two calculators I've tried it on. I can put letters and numbers to either side of the message, but never inside it, and I can't change it in any way.

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### Work

Can you remember Avogadro's constant to six decimal places? Can you figure out the square root of 747 in less than a second? Can you add up hundreds of numbers, one after another, without ever making a mistake? Pocket calculators can do all these things and more using tiny electronic switches called transistors. Let's take a peek inside a calculator and find out how it works!

www.explainthatstuff.com)Humans work on numbers in decimal format (the numbers 0–9) largely, it's believed, because we have ten fingers and toes to count with. But the numbers we use to write out amounts of things are arbitrary. Let's say you have a pile of coins and you want to tell me how wealthy you are. You can point to the pile, I can look at it, and if I see a lot of coins I'll conclude you're rich. But what if I'm not there to look at the pile? Then you can use a symbol to represent the coins—and that's what a number is: a symbol that indicates an amount. If there were nineteen coins, you could use the two symbols "1" and "9" written together: 19. Taken together, that means 1 × 10 plus 9 × 1 = 19. That's how decimal works using a system of 10 symbols. But you could use other symbols too. (Source:

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