(   )
                          (    )
                           (    )
                          (    )
                            )  )
                           (  (                  /\
                            (_)                 /  \  /\
                    ________[_]________      /\/    \/  \
           /\      /\        ______    \    /   /\/\  /\/\
          /  \    //_\       \    /\    \  /\/\/    \/    \
   /\    / /\/\  //___\       \__/  \    \/
  /  \  /\/    \//_____\       \ |[]|     \
 /\/\/\/       //_______\       \|__|      \
/      \      /XXXXXXXXXX\                  \
        \    /_I_II  I__I_\__________________\
               I_I|  I__I_____[]_|_[]_____I
               I_II  I__I_____[]_|_[]_____I
               I II__I  I     XXXXXXX     I
            ~~~~~"   "~~~~~~~~~~~~~~~~~~~~~~~~

Sat, 29 Jul 2017

HP-15C Calculator

I still have an HP-15C I bought new in 1987. I don't use its programmable features anymore, but just as a desktop calculator (after getting used to RPN, I could never get the hang of 'normal' algebraic entry again). These are probably the slide rule of my generation - every computer science and engineering student had one.

The good thing about these models is that they last forever (clearly), and the keys have this great, solid feel to them when pressed. I still have some of the programs I wrote in the back of the manual, written as a sequence of keypresses. At the time I was a sophomore in a computer science curriculum at UMASS, Amherst, so the programs were probably due to my discrete math class, although I have no memory of writing them now 30 years later.

read more after the break...

posted at: 17:24 | path: / | permalink | calculator, hp15c, retro