AC
All Clear (AC)
Completely wipes out the active expression screen and resets temporary memory registers.
Modes & Trig
Mode Selection, Fractions & Trigonometry
MODE Button
Switch between computation modes including standard math, statistics (SD/REG), table generation, and equations.
Sin, Cos, Tan & Angles
Compute trigonometric functions. Ensure your angle mode is correctly configured to Degrees (DEG), Radians (RAD), or Gradians (GRA).
Fraction to Decimal (S⇔D)
Instantly convert outputs back and forth between exact fractional forms and decimal values with a single tap.
Practical Tutorials
Step-by-Step Problem Solving Guides
EQ
Solving Quadratic Equations
To solve ax² + bx + c = 0, press MODE until you find EQN, select option 3 for quadratic equations, enter coefficients a, b, and c, then press equals to find both roots.
SD
Calculating Standard Deviation
Switch to STAT mode (Option 1: 1-VAR), input your dataset values pressing [DATA] or [M+] after each entry, then access Shift + STAT menu to extract mean and standard deviation.
MAT
Matrix Operations
Navigate to Matrix mode, define Matrix A and Matrix B dimensions (e.g., 2 × 2), input element values, and execute matrix multiplication or addition via the matrix calculation editor.
Shortcuts
Desktop Keyboard Reference Guide
| Key / Trigger | Function / Action |
|---|---|
0 - 9 & . |
Enter numbers and decimal points directly from keyboard |
+, -, *, / |
Perform basic arithmetic operations (addition, subtraction, multiplication, division) |
Enter or = |
Evaluate and compute final mathematical expression answer |
Backspace |
Erase the last typed character or operator |
Help Center
Frequently Asked Questions
Press SHIFT once before tapping another key to activate its yellow secondary function. Similarly, press ALPHA to type variables or access red letters on the calculator keypad.
Access the mode settings menu to toggle your angle units between DEG, RAD, or GRA depending on your calculus or trigonometry assignment requirements.
Yes, use the dedicated S⇔D conversion toggle key to transform fractional values into clean decimal numbers instantly.