texas instruments first complete scientific calculator
introduced early 1974 for $169.95.
was superseded by the sr50a and later the sr50-II. the sr50a is said to
have been improved in accuracy, although the original does pretty well
nevertheless. like a lot of ti machines, it operates internally to 13
digits. this gives it a significant edge over most others and
significantly more accurate than the hp35 with which it was to compete at the
time. the competition for scientific models continued to intensify quickly
bringing prices down.
ti were adept at producing cost effective and popular models. hewlett
packard were the leaders at the high end, but not everyone could afford
their models. later models like the ti-30 brought
the cost of a scientific calculator into everyone's price range.