Professional financial calculator and 2003 TI-1706SV arithmetic calculator. TI-36X II (1999) (2-Line Displays) A prominent new feature is 2-line display, which includes a row of 11-character, 5x7-cell characters, used to display expressions entered by user. To complement the 2-line display, it also stores multiple expressions. The interface was streamlined to use shift menus to access most scientific functions. An expression can have up to 88 characters or items. Internal precision was increased to 13 digits, while registers were increased to 5 for memory and 2 for expressions (up to 47 characters or items). New arithmetic features include integer division. New unit conversions (meter-foot, meter-yard, kilometer-mile, liter-UK gallon, kilometer per hour-meter per second), and 8 more physical constants were added (total 16 constants, 10 conversion pairs). Pi constant was also added. New 2-variable statistic regression models include natural logarithm, exponent, power. Up to 42 sample points or pairs can be stored. In base calculation, binary base was removed. Complex function was restored. Supported functions include conjugate, real/imaginary component, absolute value. Other new functions include integral calculation (Simpson's Rule, max 99 intervals), random number generators (0-1 real, integer). Stacks were increased to 23 pending operations, 8 pending values. Cosmetic changes include a D-pad and a restyled case. 2004 It was a cosmetic redesign of the 1999 model. Changes include new coloured keys and screen frame. It was manufactured by Nam Tai Electronics. TI-36X Pro (2011) (Multi-Line Displays) 2011 brought a significant overhaul to the TI-36 series called the TI-36X Pro. This model incorporates the multi-line dot matrix display already used in the TI-30 and 34 MultiView series calculators. This display allows the calculator to perform numeric derivatives and integrals in a way similar to the much more advanced TI-83 series graphing calculators. Maximum expression length is reduced to 80 characters. Registers were increased to 8 for memory, 1 for formula (44 characters), and can store up to 3 list formulas (up to 42 characters or items). Physical constants are increased by 4 to 20, conversion sets are increased to 40 (20 pairs). Binary mode is restored for Base calculation. Other new functions over TI-36X II include: Math: Least common multiple, Greatest common divisor, Prime factors (from TI-Collège Plus), Summation, Product Number functions: Rounded value, iPart(Integer part of a number), fPart(Fractional part of a number), int(Greatest integer smaller or equal to the number), min(Minimum of two numbers), max(Maximum of two numbers), mod(Modulo) Calculus: