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Author Topic: Your dream calculator (maybe real sooner than you thought)  (Read 12229 times)

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Offline xlibman

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Aren't Classpad calcs prohibitively expensive, though? When I tried to build my calculator collection in 2009, the cheapest available ClassPad 300 and 300+ on Ebay were $310 in used condition without the instructions/cable/box... (three times what I paid my Clickpad Nspire with the 84+ keypad)
Bought a class pad in mint condition. Was fully working. Got it for 30€. However, the internals were all ripped out (except for the keypad PCB which is reused) to make space for the RPi and new Screen.
Ah I see. Personally I don't like destroying working calcs, but the thing is that the Classpad is so slow to do anything and banned at so many tests that it's not like many people probably want one anymore. Hopefully your project comes to fruition in the future, although if you ever decided to mass produce this calc then you would probably need to replace the Classpad case for public release.
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Offline grosged

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Are ClassPad still slow when running asm programs ?

Offline xlibman

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They must be much faster. There aren't many of those programs, though, since the calculators were not very popular. It's the BASIC interpreter that was poorly implemented.
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Offline Krillan

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Some time ago I read from a sh 4 cpu in the cp 400 which runs with about 50 or 60 mhz, switched to the half frequency that it could run.

They must be much faster. There aren't many of those programs, though, since the calculators were not very popular. It's the BASIC interpreter that was poorly implemented.

Offline Krillan

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Hm, sorry that I say it, but... getting a cheap thing with a good dsiplay, a cpu with about some 100 mhz cycle and enough ram let's me thin at an older smartphone. Ok, building your own machine is a nice training in hard- and software, ok. But all thights I had about building a tablet with raspberry 3 or anything like this did lead me to used tablets at the bay... sorry about this sacrilegic words...

Offline c4ooo

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You should use the edit button to modify your post instead of posting twice in a row ;)

Offline xlibman

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Hm, sorry that I say it, but... getting a cheap thing with a good dsiplay, a cpu with about some 100 mhz cycle and enough ram let's me thin at an older smartphone. Ok, building your own machine is a nice training in hard- and software, ok. But all thights I had about building a tablet with raspberry 3 or anything like this did lead me to used tablets at the bay... sorry about this sacrilegic words...
I think his goal is to build an actual calculator. :P
  • Calculators owned: TI-84 Plus C Silver Edition, TI-84 Plus CE, Casio fx-CG10
  • Consoles, mobile devices and vintage computers owned: Samsung i5510, Nintendo Switch, Playstation TV

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Retired Omnimaga admin (2001-11) and editor (2012-14)

 


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