Casio - fx-8700G

Description

Brand: Casio
Model: fx-8700G
Type: Graphical programmable scientific calculator
Batteries: CR 2032 x 3 + CR 2025 x 1 (Memory backup)
Lifetime: Introduced: ca. 1990
Terminated: unknown
Notes: Although at first glance this calculator seems simpler than other Casio's like the Casio fx-7000G, but thanks to this calculator's menu keys it has a lot to offer. If you like this calculator also take a look at one of its successors, such as the Casio fx-9700GE.

This calculator (as do many other Casio scientific calculators) uses one and the same key for both the constant π as well as exponents. This works as follows. When you first enter digits, the "EXP"-key will enable you to enter the numbers exponent, otherwise it will enter the constant π.

The calculator has quite some memory (15000 steps).

The menu keys take a little getting used to, even more because the display width is different from the added with of the six function keys. The menu function for F1 for instance doesn't appear directly above the key.

Other that that the menu-operated functions of this calculator work really well. Take for instance the built-in matrix operations. There's a menu entry for entering data into matrixes A and B, and menu's to perform matrix operations, which will be stored in matrix C. There's also a full blown text editor in this calculator, which even includes search functions.

I found this calculator on a flee market in Paris in 1999, and it's rather worn. Somehow this calculator's paint comes off easily. I was pleasantly surprised to find it in working order. With working batteries even!

Some drawbacks, to switch it off you have to use "shift-on", and another drawback is the fact that it requires four expensive batteries. And the fact that some of the functions are only available using the menu keys, but that's probably just a matter of getting used to.

Another flaw with this calculator (and many of the other Casio models in this series) is the so called protective cover, which in many cases does more damage than it does good. When sliding the cover on and of the display can easily get damaged, and almost all of these Casio's have scratches on the display. In my opinion this is a very stupid design flaw. Users beware!

The funny thing with calculators bought on street markets is that sometimes the calculator's memory contains the strangest things. Like in this case.

The built-in text editor contained a file named "GRENDEL" with the following contents:

       ,
      I m easy like
      Sunday morning..

      Hi Lenny, I just
      wanted to do
      something else
      than this stupid
      math exercise I
      just can t get
      the hang of. So
      I decided to
      write a really
      cool and
      interesting note
      with a really
      cool name like
      GRENDEL, that
      will get erased
      real quick
      because I have
      absolutely
      nothing of great
      interest to say.
      Well, I guess I
      should stop my
      stupidities here
      so bye, and see
      around...

      Anonymous
      
And there was also a program with the following contents:

      6x5 KOALA,MA GEISHA
      MA FLEUR AU JASMIN

      BONNES VACANCES TU
      VAS ME MANQUER

      TOI-NON-PLUS
      

Picture:  Casio fx-8700G picture

©2009 Ernst Mulder