The jt72 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 for real numbers: x! = gamma(x+1)
- 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 banner at the top of the screen to open the user manual in a web browser.
- Developed in the C Programming Language, using functions from the C standard math library, for efficient computation and trustworthy accuracy.
