4 digit seven segment display

I am using an Arduino Uno with a 4 digit 7 segemnt LED display. I couldnt figure out how to display data on the display. for example, i have a temperature sensor. How would i display the temp on the display? or keypad inputs.

please respond soon

What library are you using?

Here is a multiplex library for a 7 segment. http://code.google.com/p/mutiplex7seg/

If that uses too many pins, you might consider a Max7219/7221 to handle the multiplexing.