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Memory Card
A Memory Card is commonly known as a multimedia memory card. It is
very small in size, usually 1–1.5 inches. These are used in mobile phones
and digital cameras. You need to have a card reader to read the stored
data on the memory card.
Technology Literacy
byte Quest Experiential Learning
Identify the following and write their names:
1. 2.
3. 4.
Measuring the Computer’s Memory
The basic unit for measuring the memory of a computer is the byte. A byte consists of a
group of eight bits, for example, 10001011, that is, 1 byte equals 8 bits. A group of 4 bits is
known as a nibble (half a byte), for example, 1001, that is, 1 nibble equals 4 bits.
Other units for measuring the computer’s memory are Kilobyte, Megabyte, Gigabyte,
Terabyte, and so on.
8 bits 1 Byte 1024 Bytes 1 Kilobyte (KB)
1024 Megabytes 1 Gigabyte (GB) 1024 Kilobytes 1 Megabyte (MB)
1024 Gigabytes 1 Terabyte (TB) 1024 Terabytes 1 Petabyte (PB)
1024 Exabytes 1 Zettabyte (ZB) 1024 Petabytes 1 Exabyte (EB)
1024 Zettabytes 1 Yottabyte (YB) 1024 Yottabytes 1 Brontobyte
1024 Brontobytes 1 Geopbyte
Data Storage and Memory 11

