Integers use much less space then Floats?!

mixania:

AWOL:
The processor has no floating point hardware, so fp operations have to be emulated in software.
This takes up program memory.
A float is four bytes, an int is two on the Arduino.
Variables reside in RAM, not program memory.

Thanks, but how does it only resides in RAM if 600bytes of program memory are being used up?

Program memory is physically different from RAM.

http://www.arduino.cc/playground/Learning/Memory