I assume you mean graphing calculators. They are variables that you can store numbers to, like if you need to use it later on in a math problem. But they can't be used to figure out algebra equations. Say you have the equation n+1=2 and n+m=4. You would figure out the value of n, which is 1, and you could either remember it or store it to variable n. Then you could use the variable n in figuring out m instead of putting in 1. (4-n=m instead of 4-1=m)
Input is when you type with the calculator
You can type letters from A-F, X, Y and M by pressing alpha.
What does 4e-6 mean
memory/recall
all clear
Enter the numbers 537818 on your calculator, then turn the calculator upside down. The characters will look the letters BIBLES.
Input is when you type with the calculator
The computer keyboard.
yes you mean calculator. yes a calculator is there in the computer.
clear
"Calculator"
You can type letters from A-F, X, Y and M by pressing alpha.
What does 4e-6 mean
well letters are basically bytes you can use a letters to binary calculator and each 8 pieces of binary equals 1 byte.
Usually scientific and graphic calculators. (there may be engineering ones as well which will have them)
memory/recall
all clear