A graphing calculator you touch.

ABA-T1 brings a computer algebra system, twenty apps – function plots, statistics, geometry, 3D, finance, spreadsheet – a programming language and Python into one calculator. Tap the keys, drag the graph, pinch to zoom, or type on your keyboard.

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The ABA-T1 device showing a plot of x times sine of x

Everything in one device

Each app has a symbolic, a plot and a numeric view, its own setups and can be saved as a copy. Results stay exact where they can and are marked as numeric where they cannot.

The home view with fractions, a root, a complex product and a binomial coefficient

Home and RPN

Textbook entry with exact fractions and roots, complex numbers, units, based integers and an RPN stack – with a history you can scroll back through.

The CAS view with a factorisation, a derivative, an integral and the solutions of a quadratic equation

Computer algebra

Factor, expand, solve, differentiate and integrate symbolically. Every answer is checked numerically before it is shown.

The function app plotting x times sine of x with the trace cursor

Function plotter

Ten functions, trace, zoom by pinch or menu, roots, extrema, intersections and areas – as numbers you can trust.

Advanced graphing with a ring between two circles and a half plane with a dashed border

Advanced graphing

Equations and inequalities in X and Y, drawn with interval arithmetic: shaded only where the relation surely holds.

A histogram of twenty values in the statistics app

Statistics and inference

Histograms, box plots and eight more charts, eleven regression models, hypothesis tests and confidence intervals.

A 3D surface of sine x times cosine y inside its bounding box

3D graphing

Surfaces z = f(x, y), shaded by height, rotated by dragging and zoomed by pinching – no special graphics hardware needed.

A triangle with its circumcircle and the midpoint of one side

Dynamic geometry

Points, lines, circles and conics that follow when you drag – with live measurements of lengths, angles and areas.

The program editor with a Collatz step counter

Programs

A structured language with EXPORT functions, an editor with highlighting, a debugger with breakpoints, user keys and your own apps.

The Python shell with a sum, a list comprehension and pi

Python

MicroPython in the calculator: a shell, scripts, math and cmath, drawing on the screen and access to the calculator variables.

Programming and your own apps

The calculator language

  • EXPORT functions callable from the home view, LOCAL variables, IF, CASE, FOR, WHILE, REPEAT
  • Lists, matrices, strings and the full function catalogue
  • PRINT, INPUT, MSGBOX, CHOOSE, GETKEY and graphics on ten screens
  • Editor with highlighting and templates, debugger with breakpoints, On stops a program

Python

  • MicroPython running in the calculator, offline
  • math, cmath, random, json – plus calc for the calculator variables
  • graphic: pixels, lines, rectangles and text on the screen
  • Shell with history, scripts with error lines

Get it

Use ABA-T1 right away in the browser – it installs as an app and works offline – or download the desktop version for macOS, Windows and Linux from the releases. The source code is on GitHub under the MIT license.