Memory Storage Units Explained

Understanding memory storage units is crucial for comprehending digital data sizes. These units are based on powers of 2, specifically $2^{10}$ or 1024, because computers operate using binary (bits and bytes).

Let's define the memory units provided in the question:

• Kilobyte (KB): A Kilobyte is approximately one thousand bytes. More precisely, 1 KB is equal to $2^{10}$ bytes, which is 1,024 bytes.
• Megabyte (MB): A Megabyte is approximately one million bytes. It is also equal to 1,024 Kilobytes (KB). Therefore, 1 MB = $2^{10}$ KB = $2^{20}$ bytes = 1,048,576 bytes.
• Gigabyte (GB): A Gigabyte is approximately one billion bytes. It is equal to 1,024 Megabytes (MB). So, 1 GB = $2^{10}$ MB = $2^{30}$ bytes = 1,073,741,824 bytes.

Comparing Memory Sizes

To determine the correct decreasing order of memory sizes, we need to compare them from the largest to the smallest. Based on the definitions above, the hierarchy from smallest to largest is:

Byte < Kilobyte (KB) < Megabyte (MB) < Gigabyte (GB) < Terabyte (TB) and so on.

We can summarize the relationship between these units as follows:

Decreasing Order of Memory

From the table and definitions, it is clear that Gigabyte (GB) is larger than Megabyte (MB), and Megabyte (MB) is larger than Kilobyte (KB).

Therefore, when arranging the given memory sizes in decreasing order, we start with the largest unit and proceed to the smallest unit:

1. Gigabyte (GB)
2. Megabyte (MB)
3. Kilobyte (KB)

This sequence corresponds to 1 GB, 1 MB, 1 KB.