Happy pi day - March 14th

Discussion about ZX80 / ZX81 Software
Post Reply
Posts: 5
Joined: Wed Apr 06, 2016 9:36 pm

Happy pi day - March 14th

Post by ZX79 » Thu Mar 14, 2019 7:21 pm

It was reported today that the record for pi is 31 trillion digits.

I don't know if this has been established already, if not, as a pi day challenge:

What is the most accurate approximation of pi that can be calculated using either the expanded or unexpanded ZX80?

Here are some suggestions for calculating pi:


Note, 10 PRINT "3.141592653589793" or similar, does not count. :-)

Post Reply