With the PIC Timer 1 calculator you can see the resulting frequencies and
periods when you change three pieces of information. :
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sliders let you change the values by dragging a control up and down on the
screen and the resulting changes are immediately shown in this page. The
first is for the prescaler and the other two are the high and low byte for the
timer value. You can also set the timer value by typing into the spinbox - top
left (or use the up/down arrows to change the value in the
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