Texas Instruments TI-30X IIS Scientific Calculator
The TI-30X IIS is a hybrid-powered (IIB is battery-only equivalent), quite simple calculator. Like the TI-34, it has 88-character support and a 10+2 normal display. Its appearance is more conventional and it has basically the same features at the TI-34. Like the TI-34, this is a bog standard scientific calculator with no textbook display support. It supports up to 23 levels of parentheses and has many built-in functions.