temperature to led

Hi, I need to build a circuit that reads the current temp (need to use LM335) and then I should be able to read it on a 3 digit 7segment display(3 of them ofcourse). Anyone have any idea on how to do this? I need to do it as a school proyect, but kinda clueless....

I saw this one,
**broken link removed**
but it uses another chip instead of the LM335 and it only gives the output in binary. How can I convert this? I'd appreciate any help.
Thanks

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ummmmmm
electronic-circuits-diagrams

damn!
electronic - circuits - diagrams without the spaces

anyone?