Estimating PI without a calculator

[JimP]

(04-16-2014 02:41 AM)Thomas Klemm Wrote:  

(04-15-2014 06:49 PM)Don Williams Wrote:  It seems we don't need RPN.

Who said we can't do it with RPN?

Code:

00 { 8 Byte Prgm }
01 2
02 STO* ST Z
03 +
04 SQRT
05 STO/ ST Y
06 END

Start with:
2 ENTER
0

Then just keep hitting the [R/S] key.

Cheers
Thomas

I'm struggling with the concept of hitting an R/S key (or any other key, for that matter) when the topic is about estimating pi WITHOUT a calculator. Just to be precise, I took my Castell-Novo Duplex 2/83N, aligned the 22 on the C scale with 7 on the D scale, moved the cursor over to the 10 on the D scale, and bold as brass on the C scale was the symbol for pi. So there...