COMPUTER FUNDAMENTALS

COMPUTER HARDWARE

COMPUTER MEMORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A kilobyte (kB) is ____ bytes or 2^10 bytes
A
1, 008
B
1, 000
C
1, 024
D
1, 224
Explanation: 

Detailed explanation-1: -The term ‘kilobyte’ has traditionally been used to refer to 1024 bytes (210 B). The usage of the metric prefix kilo for binary multiples arose as a convenience, because 1024 is approximately 1000.

Detailed explanation-2: -Traditionally, 1 kilobyte is used to express 1024 bytes (210 B). The concept of metric kilos is used here because 1024 is close to 1000 for convenience. Today, this notation format is used in many places. Example: Microsoft Windows.

Detailed explanation-3: -Thus the kibibyte, symbol KiB, represents 210 = 1024 bytes. These prefixes are now part of the International System of Quantities.

Detailed explanation-4: -A kilobyte (KB) is 1, 024 bytes, not one thousand bytes as might be expected, because computers use binary (base two) math, instead of a decimal (base ten) system. Computer storage and memory is often measured in megabytes (MB) and gigabytes (GB).

Detailed explanation-5: -Originally, a byte was considered a collection of 8 bits, the smallest number of bits that were able to express a number, letter or character within binary. A kilobyte is approximately 1, 000 bytes (specifically, 2 to the 10th power or, in decimal form, 1, 024 bytes).

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