what is Calculator ?

 The basic functions (addition, subtraction, multiplication, division) are included in all calculators but some offer more advanced options such as square root or trigonomic functions.

Some calculators have the option to convert currency and can calculate mortgage payments.

Accessing the calculator
Users running Microsoft Windows can access the calculator by following the steps below.

Windows 10 users

1. Click Start.
2. In the programs list, find and click the Calculator program.

or

1. Click Start.
2. Type calc and press Enter.

or

1. Press the shortcut keys Windows key+X.
2. In the Power User Task Menu, click the Run option.
3. Type calc and press Enter.

Windows 8 users

1. Access the Windows Start screen.
2. Type calc and press Enter.

Windows 95 to Windows 7 users

1. Click Start.
2. In the Start menu, click All Programs or Programs.
3. In the programs list, click the Accessories folder.
4. Select the Calculator program.

OR

1. Click Start.
2. In the Start menu, click the Run option.
3. Type calc and press Enter.

Linux users

In Linux and Unix, users can run the bc command or dc command to open the calculator from the command line.