Ti 34 circa 1987

[pier4r]

A quest to get the same ti that my father gave to me and that I destroyed by mistake around 1998. Unfortunately my memory does not help me much aside: was a ti, with solar power, scientific.

I am sure the ti 34 that I got (~1987) for circa 15€ is not, while I thought it was. The keys of my father's ti were not smooth (they had like stripes) , instead the ti34 has smooth surfaces.


Though the calculator is no match for the sharp el506w (from 2002) it is not bad at all. I need to find some relaxing exercises to use it.

https://imgur.com/RnaUOk6

[DavidM]

(11-15-2017 09:16 PM)pier4r Wrote:  https://imgur.com/RnaUOk6

I acquired a TI-34 just like the one in your picture back in '87 (or thereabouts). I wanted to have a cheap unit to use at work that would do basic HEX/BIN math, and the solar power source was convenient. I still have it, but I've noticed that it requires a fair amount of light now to operate. It's convenient (and cheap) for what it does.

Jose has one as well. Just in case you didn't get it, that thread has a link to a scan of the "quick reference card" that originally came with the TI-34.

[pier4r]

Thanks David! I found that thread yesterday too. Was nice (it took away a doubt whether there are batteries inside the device).

I have both the sliding cover and the quick reference, but nice that you posted them.

I still don't get the variables thought. There are letters from A through F but according to the manual (from datamath) no reference is made to them.

[jebem]

I didn't spend too much time with this nice machine, but I believe that the A to F labels are used to type in hexadecimal numbers.
I think it has only a single memory register available for arithmetic operations, hence we just use the STO key without arguments. Of course it also have extra dedicated registers for Statistics.

More detailed info can be found in the Toshiba 7988 SoC processor, as this Texas uses just this chip with a textbook implementation (no extra features added):
http://pdf.dzsc.com/JT7/JT7988Y-AS.pdf

[pier4r]

jebem, thanks. It makes sense for Hex to have A-F .

It is also interesting that TI uses Toshiba chips.

Such "limited" systems are really a nice input to duplicate their functions as programming experience. Something like the hp 50g is overwhelming, or also 'simpler' hp calculators from the past like the hp 67 and others.They have truckloads of functions that takes time to implement, unless one uses already made librarlies like the GNU scientific library.

[Eddie W. Shore]

I can confirm, A-F are hexadecimal digits.

[Dan]

(11-16-2017 10:23 AM)pier4r Wrote:  It is also interesting that TI uses Toshiba chips.

The Canon F-73P I used in school in the 80s has a Toshiba T6711 chip:

http://www.datamath.org/Related/Canon/F-73P.htm