Computer System

Chapter Two

2.1.3 Storage Capacity

At the end of this topic, students should be able to:

a) Differentiate various storage capacity

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Storage Capacity

• Capacity is the number of bytes a storage mediumcan hold

2Page 354Figure 7-2

Equal to

1,024 bytes

1,024KB

1,024MB

1,024GB

1,024TB

1,024PB

1,024EB

1,024ZB

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Capacity Storage Measured in

• Kilobyte = 1,024 bytes• Megabyte = 1,024 Kilobyte• Gigabyte = 1,024 Megabyte• Terabyte = 1,024 Gigabyte• Petabyte = 1,024 Terabyte

Conversion unit of Capacity Storage

1200 MB = 1200 / 1024= 1.17 GB

1200 MB = 1200 / 210

=

1.17 GB

1 GB = 1 x 1024 x 1024= 1 048 576 KB

1 GB = 1 x 210 x 210

= 1 048 576 KB

OR

OR

PB EB ZB YBTB

GB

MBKBBit (b) Byte (B)

÷ 8

÷ 210 ÷ 210 ÷ 210 ÷ 210 ÷ 210 ÷ 210 ÷ 210 ÷ 210

x 210 x 210 x 210 x 210 x 210 x 210 x 210 x 210x 8

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