TI calculators

The TI-89 is Texas Instruments' second-most recent calculator, and consequently does not have as many programs as its sibling models. However, an enormous number of functions are contained within the operating system itself, reducing the number of programs that need to be written. Another source of confusion in programming for the TI-89 is the fact that there are at least four different versions of software out there, as TI has made modifications to the Advanced Mathematics Software since the introduction of this calculator. These changes often include changes to rom calls, causing many problems for assembly programmers. However, at this point I only program in BASIC, which should work on all versions of hardware and software.

Area of a Circular Segment

This program computes the area of a circular segment(the area between a chord and the arc it spans).

Atom

A program that displays the relevant properties for chemistry of electrons, neutrons, and protons.

Atomic Theory

This is a program that tells the characteristics of the following atomic theories: Aristotelian, premodern (around the 1700s), Dalton's, and modern.

Chemical Bonds

This is a program that tells the characteristics of the following chemical bonds: nonpolar-covalent, polar-covalent, ionic, and metallic.

Electron Configuration

This is a program that tells the principles/rules that govern electron configurations and the order of the levels of energy levels (s-f).

Hero's Formula

This program computes the area of a triangle given the lengths of the sides.

Ions

This is a program that tells which monatomic and polyatomic ions have which charge.

Molality

The concentration of a solution expressed in moles of solute per kilogram of solvent.

Molarity

The concentration of a solution expressed in moles of solute per liter of solvent.

Quadratic Formula

This program computes the roots of a quadratic equation if it is not factorable.