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What calculator do you use ?
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T4P:
Being a student you will inevitably lose your calculator every now and then and run into shitty calculators because your budget is not that much ._.
I just use a Sharp EL-509WS (Worst contrast ever) that goes for roughly about 10$ ? For my exams, other times i use a plethora of calculator emulators on my phone
Mainly the Andie Graph with the TI-86 ROM inside as well as the Graph 89 Free with the 89 Ti ROM inside, oddly i never use the Droid48 because i do not know how to make use of RPN mainly but my favourite calculator is the TI-86!
amyk:

--- Quote from: jucole on November 17, 2012, 09:48:29 pm ---
--- Quote from: IanB on November 17, 2012, 07:28:47 pm ---
--- Quote from: jucole on November 17, 2012, 01:17:35 pm ---I'd always loved my Sharp calc but it's been showing it's age recently; so when I saw this almost identical el-crapo for £5 in Tesco the other week, I just had to get it!! you can just smell the cheap plastic!! I love it!!

--- End quote ---

That looks so similar it's like it has to be using the same chip. Does it give the same numerical results?

--- End quote ---

Hi yes I believe the numerical results are the same; so like you say it's more than likely the same chip-set.

--- End quote ---
Did you test it with this?
http://www.rskey.org/~mwsebastian/miscprj/forensics.htm#algorithm

According to the result table:
http://www.rskey.org/~mwsebastian/miscprj/models.htm
The EL-506P used two different chipsets depending on the year.
jucole:

--- Quote from: amyk on November 18, 2012, 10:00:43 am ---
--- Quote from: jucole on November 17, 2012, 09:48:29 pm ---
--- Quote from: IanB on November 17, 2012, 07:28:47 pm ---
--- Quote from: jucole on November 17, 2012, 01:17:35 pm ---I'd always loved my Sharp calc but it's been showing it's age recently; so when I saw this almost identical el-crapo for £5 in Tesco the other week, I just had to get it!! you can just smell the cheap plastic!! I love it!!

--- End quote ---

That looks so similar it's like it has to be using the same chip. Does it give the same numerical results?

--- End quote ---

Hi yes I believe the numerical results are the same; so like you say it's more than likely the same chip-set.

--- End quote ---
Did you test it with this?
http://www.rskey.org/~mwsebastian/miscprj/forensics.htm#algorithm

According to the result table:
http://www.rskey.org/~mwsebastian/miscprj/models.htm
The EL-506P used two different chipsets depending on the year.

--- End quote ---

great site!    both calcs came out as 8.99999863704 so according the look-up "Sharp EL-506P (mid-80s, earlier version)" and the "Sharp SC6992" chip. So I cracked them open and took a pic. (left el-crapo, right is the sharp el-506p)


quarks:
That's interesting. Because I just worked with Excel2010 before I saw this. I tried it and was very surprised when
ARCSIN(ARCCOS(ARCTAN(TAN(COS(SIN(9))))))=0,42477796076938 showed up.
This seems to be the result with radians instead of degree angle. Does anyone know how to change this in excel.

Then I did the same test:  arcsin (arccos (arctan (tan (cos (sin (9) ) ) ) ) )
with my HP48GX, HP50g, HP48GX emulator on Android and Windows 7 64bit
result always was 8.99999864267 (as stated in the article).

greetings from Germany
Fsck:
TI nspire CX CAS - lost my ti-89 so this replaced it
ti-84 for easy arithmetic
matlab & Excel for numerical analysis
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