I don't get it... HP 50G
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From: lfmorrison on 27 Jul 2006 10:44 Raymond Del Tondo wrote: > So obviously they weren't able to get 5 volts out of 4x1.5 volts > batteries;-) Huh? The voltage of their 3xAA batteries was never even the limiting factor in previous models. Some other design consideration must have always been at play. There are RS232 transceiver chips available which are capable of tolerating fully compliant RS232 inputs (aka +/-12V typ, +/-25V max) and capable of producing perfectly compliant RS232 outputs (+/- 6V typ, +/- 5V minimum) using as little as a single 1.8 volt power supply. - Luke
From: Steen Schmidt on 1 Aug 2006 05:29 Anssi Saari wrote: > Well, they could still provide an interface for native ARM apps. There exist provisions for running native ARM code on the HP49G+/50G. Regards Steen
From: Michael Kuyumcu on 2 Aug 2006 02:06 I have seen and used a prototype of the TI-nspire already. The prototypes had a battery life of about 3 hours (in on mode). The CAS is still very buggy. The dynamics geometry application works smoothly, but neither very elegant nor transparent. Pull down menu handling is a curse on the nspire. If you speak German, you can read a rather extensive review on http://noemanetz.de Click on CIMS-SH on the menu bar to the left. Michael Kuyumcu timite_h wrote: > Welcome to the club. > > >I was hoping for a higher resolution screen. I > > would soil myself in excitement if they released a qvga grayscale model > > (or even full vga) and ran it in native ARM. Even the wikipedia entry > > said: "it does not feature any significant technological advancements > > over the 49G+"(2). > > When you think that Casio the ClassPad has a 160*240 screen and the > upcoming TI-NSpire will have a 320*240 grayscale levels screen. > The HP50G screen seems ridiculous in comparison. > Moreover the TINspire is certainly much faster than the TI89TI which is > as fast as the HP49G+ for many things. > It wouldn't surprise me if HP lose all the market share they have in > the educational calculator market in a close future.
From: KonanYao on 5 Aug 2006 12:34 Sweet. Could you do a summary of the review in English please ? Btw do you know if the NSpire: *Is much faster than the TI89TI *has 3D plotting abilities *Has tree directory structure memory management *Programming abilities Thanks in advance. Michael Kuyumcu a écrit : > I have seen and used a prototype of the TI-nspire already. The > prototypes had a battery life of about 3 hours (in on mode). The CAS is > still very buggy. The dynamics geometry application works smoothly, but > neither very elegant nor transparent. Pull down menu handling is a > curse on the nspire. If you speak German, you can read a rather > extensive review on > > http://noemanetz.de > > Click on CIMS-SH on the menu bar to the left. > > Michael Kuyumcu > > > > > timite_h wrote: > > Welcome to the club. > > > > >I was hoping for a higher resolution screen. I > > > would soil myself in excitement if they released a qvga grayscale model > > > (or even full vga) and ran it in native ARM. Even the wikipedia entry > > > said: "it does not feature any significant technological advancements > > > over the 49G+"(2). > > > > When you think that Casio the ClassPad has a 160*240 screen and the > > upcoming TI-NSpire will have a 320*240 grayscale levels screen. > > The HP50G screen seems ridiculous in comparison. > > Moreover the TINspire is certainly much faster than the TI89TI which is > > as fast as the HP49G+ for many things. > > It wouldn't surprise me if HP lose all the market share they have in > > the educational calculator market in a close future.
From: Scotty on 5 Aug 2006 21:15
On 5 Aug 2006 09:34:22 -0700, KonanYao(a)gmail.com wrote: >Sweet. >Could you do a summary of the review in English please ? >Btw do you know if the NSpire: >*Is much faster than the TI89TI >*has 3D plotting abilities >*Has tree directory structure memory management >*Programming abilities >Thanks in advance. > I read on TI's newsgroup that the nSpire's directory structure would be something like grouping options (I can try to find the reference, but this is somewhat OT to HP calcs). That is, for a class of problems, it would provide grouping for variables, spreadsheets, graphs, etc. I hate the Voyage 200's one-level nest, all lower-case 8-character limitations. --Scott |