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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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