Documentation

Key Reference

Complete reference for every key on the TI-84 Calculator Online.

F-Keys (Top Row)

KEY FUNCTION KEYBOARD

Y= Opens function editor —

WINDOW Set graph window parameters —

ZOOM Zoom in/out on graph —

TRACE Trace along a graphed function —

GRAPH Display the graph —

Control Keys

KEY FUNCTION KEYBOARD

2nd Activates secondary (blue) function of next key pressed Glows blue when active

MODE Toggle DEG/RAD. 2nd+MODE clears screen —

DEL / INS Delete character at cursor. 2nd+DEL = insert mode Backspace on keyboard

CLEAR Clear expression. Double-press clears history Escape key

ENTER Evaluate expression Enter / Return key

ON Reset / power. 2nd+ON = off mode —

Navigation (D-Pad)

KEY FUNCTION KEYBOARD

▲ Up Scroll back through calculation history Arrow Up

▼ Down Scroll forward through history Arrow Down

◄ Left Move cursor left Arrow Left

► Right Move cursor right Arrow Right

Center — —

Math Functions

KEY FUNCTION KEYBOARD

x² Square the current value —

2nd + x² √( — Square root —

^ Raise to power. Example: 2^8 —

2nd + ^ Insert π (~3.14159) —

log Base-10 logarithm —

ln Natural logarithm —

STO Store answer to memory —

2nd + STO RCL — Recall from memory —

Trigonometry

KEY FUNCTION KEYBOARD

sin Sine function —

2nd + sin sin⁻¹ — Inverse sine (arcsine) —

cos Cosine function —

2nd + cos cos⁻¹ — Inverse cosine —

tan Tangent function —

2nd + tan tan⁻¹ — Inverse tangent —

Number Keys

KEY FUNCTION KEYBOARD

0 – 9 Digit input Keyboard 0-9

. Decimal point Period key

(-) Negative sign (not minus) —

( ) Parentheses for grouping ( and ) keys

÷ × − + Arithmetic operators / * - + keys

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