Question 1

How do you convert hex to decimal?

Accepted Answer

Multiply each digit by power of 16. 2A = 2×16 + 10 = 42. FF = 15×16 + 15 = 255.

Question 2

Where is hexadecimal used?

Accepted Answer

Memory addresses, color codes (#FF0000), MAC addresses, and low-level programming.

Question 3

Why do computers use binary?

Accepted Answer

Electronic circuits have two states: on/off, high/low voltage. Binary (0 and 1) maps directly to these states, making digital logic simpler and more reliable.

Question 4

Why is hexadecimal used in programming?

Accepted Answer

Hex is compact: each digit represents 4 binary bits. A byte (8 bits) is exactly 2 hex digits (00-FF), making memory addresses and color codes readable.

Hexadecimal to Decimal Converter

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