How do I use the SHIFT and ALPHA buttons?

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.

Casio Scientific Calculator Complete Guide & Button Functions Manual

Core Navigation

Primary Calculator Buttons & Basic Operations

All Clear (AC)

Completely wipes out the active expression screen and resets temporary memory registers[cite: 3].

DEL

Delete (DEL)

Acts as a backspace button to remove single characters or numbers step-by-step from your formula[cite: 3].

Ans

Previous Answer (Ans)

Instantly recalls the final value of your previous calculation to use in current mathematical expressions[cite: 3].

Advanced Controls

SHIFT, ALPHA, CALC & SOLVE Functions

SHIFT Button

Unlocks yellow secondary functions printed above keys, such as inverse trigonometry (sin⁻¹, cos⁻¹) and cube roots[cite: 3].

ALPHA Button

Unlocks red uppercase letters (A through Z) used for storing custom variables and writing algebraic equations[cite: 3].

CALC & SOLVE Keys

Use CALC to evaluate expressions for specific variable values, and SOLVE to find roots for unknown variables[cite: 3].

Modes & Trig

Mode Selection, Fractions & Trigonometry

MODE Button

Switch between computation modes including standard math, statistics (SD/REG), table generation, and equations[cite: 3].

Sin, Cos, Tan & Angles

Compute trigonometric functions. Ensure your angle mode is correctly configured to Degrees (DEG), Radians (RAD), or Gradians (GRA)[cite: 3].

Fraction to Decimal (S⇔D)

Instantly convert outputs back and forth between exact fractional forms and decimal values with a single tap[cite: 3].

Practical Tutorials

Step-by-Step Problem Solving Guides

Solving Quadratic Equations

To solve $ax^2 + bx + c = 0$, 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 ($x_1, x_2$).

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 ($\bar{x}$) and standard deviation ($\sigma_x$).

MAT

Matrix Operations

Navigate to Matrix mode, define Matrix A and Matrix B dimensions (e.g., $2 \times 2$), 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[cite: 3]
`+`, `-`, `*`, `/`	Perform basic arithmetic operations (addition, subtraction, multiplication, division)[cite: 3]
`Enter` or `=`	Evaluate and compute final mathematical expression answer[cite: 3]
`Backspace`	Erase the last typed character or operator[cite: 3]

Help Center

Frequently Asked Questions

Press SHIFT once before tapping another key to activate its yellow secondary function[cite: 3]. Similarly, press ALPHA to type variables or access red letters on the calculator keypad[cite: 3].

Access the mode settings menu to toggle your angle units between DEG, RAD, or GRA depending on your calculus or trigonometry assignment requirements[cite: 3].

Yes, use the dedicated S⇔D conversion toggle key to transform fractional values into clean decimal numbers instantly[cite: 3].

Casio Scientific Calculator Complete Button Manual

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