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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.
1024 bytes = 1 Kilobyte (KB)
1024 KB = 1 Megabyte (MB)
1024 MB = 1 Gigabyte (GB)
1024 GB = 1 Terabyte (TB)
1024 TB = 1 Petabyte (PB)
1024 PB = 1 Exabyte (EB)
1024 EB = 1 Zettabyte (ZB)
1024 ZB = 1 Yottabyte (YB)
Experiential Learning
#Storage Capacity
Visit your computer lab and find out what storage devices are available and also check how much
storage these devices have. Do this under your teacher's guidance. Make a list in your notebook.
#Lab Activity
Timeline
Storage devices are used to store data and information for future use.
The basic unit for measuring the memory of a computer is byte.
Other units for measuring the computer’s memory are kilobyte, megabyte, gigabyte,
terabyte, and so on.
Choose the correct option.
1. Which of the following is known as the main memory of the computer?
a. Secondary memory b. Read-only memory
c. Primary memory d. Volatile memory
14 Premium Edition-IV

