Citizen SRP-45 programmable scientific pocket calculator from 1991

[Eddie W. Shore]

(01-03-2017 09:51 AM)jebem Wrote:  Hi, Eddie, thank you for your comments.

Yes, on my Citizen SRP-45 these keys are constant memories.
If there is a non zero displayed value (register X), then when recalling one of these constant memories it will multiply the displayed value by the constant value.

This is unusual! Not only the with the automatic multiplication but on the EC-4036 the way the keys are labeled ( [A >A], [B >B] ), I would have not been able to figure this out without your post.

(01-03-2017 09:51 AM)jebem Wrote:  I have run again the forensic test to extract all the available digits.
9 sin cos tan Inv tan Inv cos Inv sin - 9 * 1000000
and got the combined result of: 9.0000156204, the same as reported for your machine.

I do not have the Radio Shack EC-4036, but based on the forensics result from the site above, it looks like it uses the same Sharp LI3301A processor. So it could present the same features as many other calculator brands using this processor.

I get the same forensic value you have. Is the Citizen a bit slow, like the calculator has to process for a micro-second before returning answer? My Radio Shack is like that.

(01-03-2017 09:51 AM)jebem Wrote:  Our local Staples store do not sell the Staples brand and I have none of their calculators. Your Staples 27952 can have a fault, assuming the calculator advertising is correct.

I will have to try another 27952. The Staples calculator was only $7.99.

Eddie