EVERYDAY SCIENCE

Detailed explanation-1: -In this convention, one thousand megabytes (1000 MB) is equal to one gigabyte (1 GB), where 1 GB is one billion bytes. 1 MB = 1048576 bytes (= 10242 B = 220 B) is the definition used by Microsoft Windows in reference to computer memory, such as random-access memory (RAM).

Detailed explanation-2: -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-3: -byte = 8 bits. 1 kilobyte (KB) = 1024 bytes. 1 megabyte (MB) = 1024 kilobytes. 1 gigabyte (GB) = 1024 megabytes. 1 terabyte (TB) = 1024 gigabytes.

Detailed explanation-4: -1MB is 1, 024*1, 024 bytes. So 1GB = 953MB. 1MB in hard drive advertised size is 1, 000, 000 bytes.

Detailed explanation-5: -The term gigabyte has a standard definition of 10003 bytes, as well as a discouraged meaning of 10243 bytes. The latter binary usage originated as compromise technical jargon for byte multiples that needed to be expressed in a power of 2, but lacked a convenient name.