How Many Fans Should My Macbook Have?

Possibly a silly question, but I've got a copy of smcFanControl running and it's only displaying one fan (the space for Fan 2 on the program is just displaying 0rpm and cannot be adjusted). I have a 14inch macbook (1.83 GHz Intel Core Duo). The computer does tend to get a little hot, am I was beginning to wonder whether one fan was broken.
Thanks.
Adam

One fan is all the macbook has.
Mort

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