The TI-30 was an exploratory number cruncher made by Texas Instruments. The first TI-30, an expense decreased yet practically equal form of’s TI SR-40 unit, used a LED showcase, was controlled by an omnipresent 9 volt battery, and held about every last bit of its usefulness in one chip, where past mini-computers utilized numerous discrete segments. The TI-30 could perform about all the logarithmic and trigonometric capacities of a HP-21, its essential rivalry at the time. Despite the fact that the Texas Instruments SR-50 spearheaded mathematical documentation with priority and brackets in 1974, the TI-30 made those gimmicks accessible at a more reasonable cost. You can download instruction manual for TEXAS INSTRUMENTS TI-30X IIS from here.