Step-by-Step Instructions

1. Basic Calculations

Use the number buttons (0-9) and basic operators (+, -, ×, ÷) for simple arithmetic.

Example: 15 × 3 + 7 = 52

Tip: Press “C” to clear everything or “CE” to clear just the current entry.

2. Using Scientific Functions

Click any scientific function button after entering a number to apply that function.

Example: Enter 45, then click “sin” to calculate sin(45°) = 0.7071

Tip: Toggle between DEG (degrees) and RAD (radians) using the DEG/RAD button.

3. Typing Expressions

Use the text area at the top to type complete mathematical expressions in natural format.

Try: cos(30) + sin(45) * 2
Or: log(100) + ln(e^3)

Tip: You can use parentheses to group operations: (2+3)×(4+5)

4. Memory Functions

Store and recall values using the 5 memory slots (M1-M5).

  • MS: Store current value in selected memory
  • MR: Recall value from selected memory
  • M+: Add current value to selected memory
  • M-: Subtract current value from selected memory
  • MC: Clear selected memory

5. Special Features

ANS: Use your last calculated answer in new calculations

±: Change the sign of the current number (positive/negative)

1/x: Calculate the reciprocal of the current number

%: Calculate percentages

Keyboard Shortcuts

Use your keyboard for faster input: numbers, +, -, *, /, Enter (=), Escape (C), Backspace

Angle Modes

Switch between degrees and radians for trigonometric functions. DEG mode is for angles in degrees, RAD for radians.

Constants

Quick access to mathematical constants: π (pi) ≈ 3.14159 and e ≈ 2.71828