HP Forum Archive 21

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TI-88 Message #1 Posted by lgomez on 22 Sept 2012, 1:38 p.m. This is my new acquisition:

Re: TI-88 Message #2 Posted by Marcus von Cube, Germany on 22 Sept 2012, 3:09 p.m., in response to message #1 by lgomez Congratulations! Does it have a bouncy keyboard like the one I had in my hands recently? Forum MySilicium (French) Sadly, the keyboard of this device is as bad as it can be. :-(

Re: TI-88 Message #3 Posted by lgomez on 22 Sept 2012, 3:20 p.m., in response to message #2 by Marcus von Cube, Germany Yes. It remeber me the TI-57 LCD owned by a school friend in the early eighties. The keyboard of my TI-57 was infinitely better than the keyboard of the TI-57 LCD and the TI-88.

Re: TI-88 Message #4 Posted by Marcus von Cube, Germany on 22 Sept 2012, 3:37 p.m., in response to message #3 by lgomez It's a real pity. The machine seems very capable.

Re: TI-88 Message #5 Posted by Gerson W. Barbosa on 22 Sept 2012, 4:57 p.m., in response to message #3 by lgomez Quote: The keyboard of my TI-57 was infinitely better than the keyboard of the TI-57 LCD and the TI-88. If you still have your TI-57, try this keystroke sequence: CLR 1 +/- + 2 + ( 3 x2 x2 x2 + . 4 5 6 7 8 9 0 lnx ) 1/x + 2nd pi 1/x = INV lnx INV lnx If the keys are not bouncing then you might get the answer to some important questions :-)

Re: TI-88 Message #6 Posted by mr-scorpio on 22 Sept 2012, 6:01 p.m., in response to message #5 by Gerson W. Barbosa Quote: If you still have your TI-57, try this keystroke sequence: CLR 1 +/- + 2 + ( 3 x2 x2 x2 + . 4 5 6 7 8 9 0 lnx ) 1/x + 2nd pi 1/x = INV lnx INV lnx If the keys are not bouncing then you might get the answer to some important questions :-) My TI-66 gives the answer 41.99999995 LOL ;-)

Re: TI-88 Message #7 Posted by Luiz C. Vieira (Brazil) on 22 Sept 2012, 6:11 p.m., in response to message #6 by mr-scorpio Close enough... regarding to the 'unknown' question. 8^D

Re: TI-88 Message #8 Posted by Gerson W. Barbosa on 22 Sept 2012, 6:25 p.m., in response to message #6 by mr-scorpio My TI-57 gives 42.000000022, but because it can display only eight significant digits the result is rounded to 42. The actual 12-digit answer is 41.9999999486, which quite agrees with your TI-66.

Re: TI-88 Message #9 Posted by mr-scorpio on 22 Sept 2012, 6:29 p.m., in response to message #8 by Gerson W. Barbosa I actually didn't think at the time to reveal the internal 'guard' digits. - Meaning that the 5 is rounded up :-D

Re: TI-88 Message #10 Posted by Eddie W. Shore on 24 Sept 2012, 9:13 p.m., in response to message #9 by mr-scorpio I managed to get 41.999999995 on my TI-65. Bummed to see that the TI-88's keyboard is not good. Does it run a complete operator system? Edited: 24 Sept 2012, 9:14 p.m.

Re: TI-88 Message #11 Posted by Gerson W. Barbosa on 24 Sept 2012, 10:07 p.m., in response to message #10 by Eddie W. Shore If you have liked that, you may also like this :-) CLR ( 0 INV ln INV ln * ( 1 2 x<>t ( ( 3 * 4 ) +/- INV ln + 5 . 6 7 8 9 ) INV yx x<>t ) )

Re: TI-88 Message #12 Posted by mr-scorpio on 22 Sept 2012, 6:25 p.m., in response to message #2 by Marcus von Cube, Germany I shudder to think how much this cost!!? Great acquisition! Edited: 27 Sept 2012, 10:57 a.m. after one or more responses were posted

Re: TI-88 - QUESTIONS YOU DON'T ASK... Message #13 Posted by Joerg Woerner on 22 Sept 2012, 7:42 p.m., in response to message #12 by mr-scorpio You never ask a girl about her age and you NEVER ask a TI-88 owner what she or he paid for it. Rule of thumb: If you have to ask for the price - you can't afford it ;-)) Cheers, Joerg

Re: TI-88 - Serial Number Message #14 Posted by lgomez on 23 Sept 2012, 5:14 a.m., in response to message #13 by Joerg Woerner Hi Joerg. Can there be an error with the serial number that appears in Datamath? http://www.datamath.org/Sci/Slanted/TI-88.htm 002074 ATA wk 32 year 1982 Mine is 002055 ATA wk 33 year 1982 Edited: 23 Sept 2012, 7:57 a.m.

TI-88 - VOLUNTEERS NEEDED Message #15 Posted by Joerg Woerner on 26 Sept 2012, 8:36 p.m., in response to message #14 by lgomez You are right: Owner Serial No: Date of manufacture Joao Oliveira 4-30-1982 ATA wk 18 year 198 Joerg Woerner 000337 ATA wk 21 year 1982 Gilles Collas 000341 ATA wk 21 year 1982 Viktor T. Toth 001101 ATA wk 32 year 1982 Luis Gómez 002055 ATA wk 33 year 1982 Smithsonian Institute 002074 ATA wk 33 year 1982 Heinz Nixdorf Forum t.b.d. t.b.d. I'm looking for a volunteer to stop by in Paderborn... Regards, Joerg

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