Deli DL-1704 Scientific Calculator available in the southern Africa region

[Gerson W. Barbosa]

(11-02-2015 06:35 PM)jebem Wrote:  Then I did the Calculator Forensics test and to my surprise, it came out with exactly the same result as reported for the HP-33S and HP-35S, no more no less.

To get the forensics result for this machine:
1. Selected Degrees mode.
2. Typed: 9 sin cos tan 2ndF tan 2ndF cos 2ndF sin
Result1 = 8.99999986
3. Get remaining digits, typed: Result1 - 8.99999 x 1000000
Result2 = 9.86001
4. Final result = 8.99999986001

I would say that this suggests a common firmware base between this Deli model and the HP-33S/35S manufactured by Kinpo Electronics.

Very interesting! Does it give the same results of the hp33s/35s for cos(x) near 90 degrees? If so, this might confirm your finding.

http://www.hpmuseum.org/cgi-sys/cgiwrap/...989#104060

Gerson.