More basic calculators typically have four core functions: adding, subtracting, multiplying and dividing. Some advanced electronic calculators include other functions like instant percentage ...

More basic calculators typically have four core functions: adding, subtracting, multiplying and dividing. Some advanced electronic calculators include other functions like instant percentage ...

Functions Before you begin comparing printing calculators, make a list of essential functions. If they’re basic and straightforward, you can save big by sticking to simple models. If you need ...

The trend-setting (and rather chunky) Time Computer Calculator 901 model had a numeric keypad and function keys on the face, and could add, divide, multiply and subtract.