int and unsigned int

Pavilion1984:
below is what i think i would see on a 16bit shift register when i buy one.

1000rpm = 1000000000000001

2000rpm = 1100000000000011
3000rpm = 1110000000000111
4000rpm = 1111000000001111
5000rpm = 1111100000011111
6000rpm = 1111110000111111
7000rpm = 1111111001111111
8000rpm = 1111111111111111




Does that explain everything now.

Not really. What's that got to do with RPM?