How To Use Calculator Keys

Basic Calculator Functions

AC - All Clear: Resets the calculator completely
C - Clear: Clears the current entry
+/- - Toggle positive/negative
% - Percentage calculation
= - Equals: Calculates the result

Mathematical Operations

+ - Addition
- - Subtraction
× - Multiplication
÷ - Division
SIN - Sine function
COS - Cosine function
TAN - Tangent function
√ - Square root
x² - Square (x to power of 2)
x^y - Power (x to power of y)
log - Logarithm base 10
ln - Natural logarithm

Memory Functions

MC - Memory Clear
MR - Memory Recall
M+ - Memory Add
M- - Memory Subtract
MS - Memory Store

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1. Basic Calculator Functions

These are the fundamental keys found on most calculators that allow you to perform basic calculations and clear entries.

2. Mathematical Operations

These keys perform various mathematical operations from basic arithmetic to trigonometric functions and logarithms.

3. Memory Functions

Memory functions allow you to store values temporarily for later use in calculations. This is particularly useful for complex, multi-step calculations.

4. Special Functions

Some scientific calculators include special functions like:

DEG/RAD/GRAD - Angle mode selection
π - Inserts the value of pi (3.14159...)
e - Inserts Euler's number (2.71828...)
n! - Factorial calculation
10^x - Power of 10
e^x - Exponential function

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between AC and C keys?
A: AC (All Clear) resets the entire calculator, while C (Clear) only clears the current entry.

Q2: How do I use memory functions effectively?
A: Store intermediate results in memory when performing multi-step calculations to avoid having to write them down.

Q3: Why does my calculator give wrong trig results?
A: Check if your calculator is in DEG (degrees) or RAD (radians) mode - this affects trigonometric calculations.

Q4: What does the 'Inv' or 'Shift' key do?
A: These keys access secondary functions (usually shown above the primary key functions).

Q5: How do I calculate exponents that aren't squares?
A: Use the x^y or y^x key - enter the base, press this key, then enter the exponent.