I am a new Mac user. Please help! How do I get the calculator that's in the dashboard onto the desktop?
Use the calculator app, /Applications/Calculator, instead of the Dashboard calculator.
Then you can keep it open or place it in the dock for ready reference.
You can also use spotlight (the maginifying glass in the upper right corner of screen, next to notification center if running mountain lion) as a calculator.
Yup. New to mac as well and you can do "Command" + "Spacebar" for Spotlight, just type whatever calculation you want, or just type "calculator" and press "Enter" for a desktop calculator. Have to love spotlight even better!
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