Re: Pi in the, er, print
'Why would BCD help you "represent billions of dollars to the nearest cent without rounding errors for simple addition and subtraction"?'
I'm not sure that it does. But it does make it a damn sight easier to print out the resulting numbers on a display because many CPUs of the time didn't have a divide instruction. It's trivial to divide by 10 in BCD.
Biting the hand that feeds IT
