The jt72 programmable scientific calculator is designed as a practical engineering tool for quickly performing calculations that involve real numbers.

Design Points

Quick, simple, and easy to use.
Efficient entry system. Calculations are performed with minimal keystrokes.
Almost all operations are immediately accessed without having to press a shift or function key.
Keys that perform similar functions are grouped together and color coded.
Record/play programming is simple and easy to learn, use, and remember.
Minimalist user interface design that avoids visual clutter.

Features

Numeric Display
Floating-point, scientific notation, and engineering notation formats.
15-digit internal precision, displayed at up to 14 digits with rounding.
Right or left justification (tap and hold the display to switch).
Tap the display to copy it to the Android clipboard.
Status line with extra information about error conditions and calculator state.

All common math functions, including
Arithmetic operators
Percent and percent change
Powers and roots
Hypotenuse (Pythagorean Theorem function)
Logarithmic and exponential functions
Trigonometric functions in degrees, radians and gradians
Permutations and combinations
Factorial
Random number generator

Two-location memory
M+ (add to memory) and M- (subtract from memory)
First memory is a statistics memory with average function.

Conversions
Degrees to or from radians
Imperial/metric unit conversions

Programming
Record/play programming
Top row keys (A-F) are dedicated to running programs.

Dual-function clear key
During numeric entry, erases previous character.

Easy-access manual: Tap the jt72 scientific banner at the top of the screen to open the user manual in a web browser. http://jayts.com/jt72/manual

Developed in the C Programming Language, using functions from the C standard math library, for efficient computation and trustworthy accuracy.

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