TI-84 Andy Lew

Andrew Hamrick

WHAT IS GOING TO BE COVERED

• History of the TI 84 series • Overview of TI-83+/TI-84+/TI-NSpire • Zilog Z80 processor • Programmability • Projects

HISTORY OF THE TI-84 Texas Instruments pre 1990 - known for semiconductors 1990 - introduced their first graphing calculator, the TI-81. 1990 - led to an increase in popularity of graphing calculators 1990 - and since their first release, many models were launched 2004 - TI-84 release - Remains the most popular graphing calculator by TI

TI-83+ • Released 1999 • 96 x 64 display • Zilog Z80

• 6MHz clock • 32 KB ram • Price: $91.46 • Successor: TI-84+

TI-84+ • Released 2004 • 96 x 64 display • Zilog Z80 processor

• 15MHz • 128 KB ram • Price: $99.99 • Successor: TI-Nspire

TI-NSPIRE • Released 2011 • 320 x 240 color display • Texas Instruments ET-NS2010B processor • 100 MB ram • Price: $130

ZILOG Z80 • 8 bit processor

• Technically 16 bit • 252 out of 256 opcodes

• No multiply • Arithmetic

• 8 and 16 bit • Input and output • Ld into registers from memory

• can also load from themselves (nop) • Very common in the time

• used in the Gameboy and Gameboy color • use in some desktop computers

PROGRAMMABILITY

• Native asm support • Abundant documentation for zilog z80

• C compiliers • Serial I/O port

• Generic input and output • Internet browser

• Multitude of games

Community

• Widely used in education • Most people at least used one in high school • Large community • Many projects

• Resulting in some impressive projects • Internet Browser

• uses the usb port to stream data • Fat16 usb driver • Super Smash Bros

• Fox is the only playable character….

INTERNET BROWSER • Gossamer 1.0 • USB port for data • shows a “text version” of most

websites • loaded elsewhere and shown

on the calculator • Also works with the TI-83

SUPER SMASH BROS. • Can run in 6MHz mode for simple

background or 15 MHZ for a more complicated background

• Open source • Compatible with the TI-83 and TI-84 • USB port

REFERENCES

• https://hackaday.com/tag/ti-84/ • http://www.ticalc.org/archives/files/fileinfo/439/43966.html

Images • https://upload.wikimedia.org/wikipedia/commons/4/4d/TI-83.png • https://images-na.ssl-images-amazon.com/images/I/71RH7Vj8FUL._SY355_.jpg • https://upload.wikimedia.org/wikipedia/commons/2/28/TI-nspire_CX.jpg • http://thumbs4.picclick.com/d/w1600/pict/282203036151_/Texas-Instruments-TI-84-

Plus-TI-84-Calculator-Yellow.jpg • http://www.geek.com/wp-content/uploads/2011/07/graphing-calcultor-browser-

478x352.png