ti 30xiib

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 documentation here.