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Flash Drive
The Flash Drive is a small portable data storage device integrated with a USB (Universal
Serial Bus) connector.
Pen Drive
Pen drive acts as a portable hard drive and is easy to use as it is small,
can be carried in a pocket and can be plugged into any computer with a
USB port. Pen drive has storage capacity of up to 1TB.
Pen drive
Memory Card
It is commonly known as multimedia memory card. It is very small
in size usually 1—1.5 inches. These are used in mobile phones and
digital cameras. To read the data stored on a memory card, you
typically need a card reader, although many devices have built-in Memory card
slots for direct access.
i + MEASURING THE COMPUTER’S MEMORY
The basic unit for measuring the memory of a computer is byte. A byte consists of a
group of eight bits, for example, 10001011, i.e., 1 byte equals to 8 bits. A group of 4 bits
is known as a nibble (half byte), for example, 1001, i.e., 1 nibble equals to 4 bits. Other
units for measuring the computer’s memory are kilobyte, megabyte, gigabyte, terabyte,
and so on.
• 1 Kilobyte (KB) equals 1024 Bytes. 1 KB = 1024 B
• 1 Megabyte (MB) equals 1024 KB. 1 MB = 1024 KB
• 1 Gigabyte (GB) equals 1024 MB. 1 GB = 1024 MB
• 1 Terabyte (TB) equals 1024 GB. 1 TB = 1024 GB
1 PB = 1024 TB
• 1 Petabyte (PB) equals 1024 TB.
1 EB = 1024 PB
• 1 Exabyte (EB) equals 1024 PB.
1 ZB = 1024 EB
• 1 Zettabyte (ZB) equals 1024 EB.
1 YB = 1024 ZB
• 1 Yottabyte (YB) equals 1024 ZB.
#Digital Literacy
Let’s CatCh Up
Define the following:
a. Primary memory- _________________________________________________________________________
b. Memory card- _________________________________________________________________________
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iPlus (Ver. 2.1)-IV

