1. Mobili-Calculator Mobili-Calculator Project presentation Saar Nakibli Shahar Ben Ezra Supervisor: Assaf Solomovitch Software Systems Lab Department of Electrical Engineering Technion - Israel Institute of Technology

2. Outline Description Project Goals Class Diagram Scientific Calculator Matrix Calculator Base Convertor Target Audience Working Environment Project Extensions

3. Description Mathematical tool for your mobile phone  Scientific Calculator  Matrices operations  Base convertor Simple yet complex User friendly

4. Project Goals Learning the Java language and the J2ME components Learning OOP concepts Interoperability of computer-mobile device Gain experienced with building mobile device applications Build an efficient tool for first year students

5. Class Diagram CalculatorMidlet FormMatrixCalculator FormBaseCalculator FormSciCalculator ExpressionMatrix FormOperSelector SoundPlayer FormAbout

6. Scientific Calculator

7. This is the core of our application Convenient interface – User friendly User can choose operations in operation window  + - * / ( ) ^  sin cos tan  exp lan  ANS Enable/Disable sounds  reads out loud the result as a number! Expression parser algorithm  Described next…

8. Expression Parser Algorithm Expression :: + - Term :: * / ^ Factor :: ( ) Factor Term ExpressionFactor

9. Matrix Calculator

10. Input Matrix:  Any size you want  Syntax rules! Operations:  transpose  Inverse (only for square matrix)  Determinant (only for square matrix) All Matrix operations were developed by us.  Java doesn't know matrix operations

11. Base Convertor

12. Converts numbers between bases. Utilizes the “ItemStateListener” interface.

13. Target Audience Freshmen engineering students. Students at general Visually impaired people  Our calculator can talk!

14. Working Environment First Priority: Nokia 6120 Any mobile phone with JVM that supports:  MIDP 2.0  CLDC 1.1

15. Project Extensions Add more calculus features  Equation solver  Function plotter  Derivatives & integrals Upgrade to “Visually impaired Calculator”  User need not to see the screen.  Every operation is read out loud. Support other working environments  All Nokia phones  All mobile phones

16. Thank you Thank you for your Attention Happy Hanukah!