I want to design a real time clock with timer 0 (NOT THE RTC) using the lpc932. I am using the RTC article posted on this web site. The only qestion I have is this:
The author describes the way to calculate the Times per second a Timer will increment. For instance he uses
(11059200Hz) / (12) = 921600 times per second.

I want to know where did he get the 12 from and if my crystal frequency was 7.373MHz which number do i have to divide this frequency by? 12?

Thanks!

J.C.