Manual of Ti 84 Online Calculator

Here is the short manual of the Ti 84 Calculator. Some important steps and guidelines are given below

Step 1: Display Screen Area

• Location: Top white rectangular section.
• Purpose: Shows results, graphs, menus, and messages like “RAM Cleared.”
• Tip: The top status bar displays calculator mode — NORMAL / FLOAT / AUTO / REAL / RADIAN/MP.
• Use: View entered equations, solutions, tables, or graphs here.

Step 2: Function Row (Blue Labels f1–f5)

• Keys: Y=, window, zoom, trace, graph
• Purpose: These five keys control the graphing interface.
  • Y= – Open function editor to enter equations.
  • Window – Adjust Xmin, Xmax, Ymin, Ymax.
  • Zoom – Quickly fit graphs or standardize view.
  • Trace – Move along graph to view coordinates.
  • Graph – Draw the entered functions.

Step 3: Secondary Function Keys

• Blue [2nd] key – Activates the blue text above keys.
• Green [ALPHA] key – Activates green text (letters & variables).
• Note: The small text color matches the activating key color.
  • Example: Press [2nd] → [MODE] = QUIT.
  • Example: Press [ALPHA] → [X,T,θ,n] = Type variable.

Step 4: Mode & Settings Section

• Keys: MODE, DEL, STAT
• Purpose:
  • MODE – Change between Degree/Radian, Normal/Sci, Func/Par/Pol.
  • DEL – Delete characters or list items.
  • STAT – Open statistics menu (lists, 1-Var Stats, regressions).

Step 5: Navigation Pad (Arrow Keys)

• Up / Down / Left / Right arrows
• Used for:
  • Moving in menus or the graph window
  • Scrolling through history or lists
  • Tracing points on a graph
• Center: No key — directional navigation only.

Step 6: MATH, APPS, PRGM, VARS, CLEAR Row

• MATH – Opens math menu (fractions, roots, solver).
• APPS – Access installed applications.
• PRGM – Programming editor (create or run programs).
• VARS – Access stored variables, window settings, and stat variables.
• CLEAR – Clears the current entry or home screen.

Step 7: Trigonometric & Power Keys

• Left Section (black area):
  • x⁻¹, x², √x, 10^x, e^x, log, ln

• Middle Section:
  • sin, cos, tan (and inverse via [2nd])
  • Parentheses ( ), exponent ^, π constant.
• These are used for algebra, trigonometry, and scientific computations.

Step 8: Numeric Keypad

• Keys: 0–9
• Includes:
  • . (decimal point), (-) (negative sign), , (comma)
  • EE – Enters scientific notation ×10ⁿ
  • Tip: For π, press [2nd] → ^ key.

Memory & List Keys

• L1, L2, L3, L4, L5, L6 – Access lists for statistics.
• STO▶ – Store a value into a variable (e.g., 5 STO▶ A).
• [2nd] → MEM – Access memory management & reset.

Step 9: Bottom Row — Control & Entry

• [ON] – Power ON/OFF.
• [0] – Zero key (also used for letter “O” in Alpha mode).
• [.] – Decimal point.
• [(-)] – Negative sign (not subtraction).
• [ENTER] – Executes commands or calculations (green label entry/solve).

Step 10: Using [2nd] and [ALPHA] Efficiently

• Press [2nd] once → activates blue functions for the next key only.
• Press [ALPHA] once → type one letter; press twice → alpha lock (A-lock ON).
• Example:
  • [ALPHA] → [APPS] → types “A”.
  • [2nd] → [GRAPH] → opens Table.

Step 11: Example — Plot a Graph

1. Press [Y=]
2. Enter X² + 2X + 1
3. Press [GRAPH] to view parabola.
4. Use [TRACE] to move along the curve.
5. Adjust range via [WINDOW].

Step 12: Resetting the Calculator

1. [2nd] → [MEM] → 7:Reset
2. Choose All RAM → ENTER → Confirm
3. Screen will show RAM Cleared (as in uploaded image).