Page 22 - Computer Class 07

2 2 2 Computer MemoryComputer MemoryComputer Memory

Read these difficult words given below carefully. Read these words only once. Now, tell
the spellings of these words to your benchmate one by one. Make sure that the

spellings must be covered while telling to your benchmate.

Omnipotent Onomatopoeia Palatable

Pandemonium Panorama Partiality

Pastime Patriarch Pediatrician

Peril Perjury Philanthropist

Picturesque Pittance Playwright

Poignancy Poignant Potpourri

What you observed now?

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Do you remember all these spellings?

Yes No

Memory is the process of taking in information from the world around us, processing it,
storing it and later recalling that information, sometimes many years later.

Memory is required in computers to store data and instructions. Memory is physically
organised as a larger number of cells that are capable of storing one bit each. Logically they
are organised as groups of bits called words that are assigned an address. Data and

instructions are accessed through these memory address. The speed with which these
memory addresses can be accessed determines the cost of the memory. Faster the memory
speed, higher the price.

Computer memory can be said to be organised in a hiearchical way where memory with the

fastest access speeds and highest costs lies at the top whereas those with lowest speeds and
hence lowest costs lie at the bottom. Based on this criteria, memory is of two types—
primary and secondary.

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