here is a cheap but adequate scientific calculator from
texas instruments. the 30 model dates way back to the original ti-30.
many other variations existed like the ti-30s and
the ti-30 lcd
this machine is in current production and stands as
typical of todays offerings. machines now, like this and the hp30s
are made by third parties and not by hp or ti themselves.
this one has the expected set of functions, but the buttons are rather
poor. this is a pity because for a little extra cost, a lot more could be
achieved in physical build. i like the 2 line display. the use of one dot
matrix and one line segmented display works well for clarity (unlike the fx-5500l
which has 2 lines of dot matrix).
the ti-30 lineage was and still is
mainly aimed at the educational market. ti have some materials and