HP-30S Scientific Calculator

[jebem]

(01-27-2017 06:31 AM)Gerald H Wrote:  On my 30S, SrNr 0230,

"Key in 1 [a b/c] 110 ....."
produces correct fraction.

"Now try 2+1e-9-2 = 0"
shows 0.000000001, ie correct.

Thanks for your input, Gerald.
If the number "04" I mentioned above is related to the firmware release, then HP has issued at least 3 firmware updates during the machine life cycle, explaining the different results for the same tests.

(01-27-2017 07:49 PM)rprosperi Wrote:  Too bad it's such a flimsy feeling machine; I've never used it enough to find it's bugs or quirks. It's also surprising HP invested so much effort on the documentation, but I guess it did form the base for the follow-on 33S and 35S.

Thanks for your encouragement to keep doing this.
I find the HP Learning Modules very useful to learn on how to use the calculator.
Being machines primarily oriented to the schools, it makes sense to invest on documentation showing good math examples that the pupils/students can use.

Meanwhile I have found out that the HP-10S also have a set of Learning Modules.
Again, HP web servers do not have any links to access this information anymore, it is a tedious and time consuming task retrieving the files.