Skip to content
Why we need secondary storage[memory]To permanently save the files To store huge data (greater than RAM)eg. SD Cards, Pen drives, SSDsDifference Between save and open command SAVE→ RAM to secondary storage OPEN→ Secondary Storage to RAM
Bit (binary digit) A binary digit is logical 0 and 1 representing a passive or an active state of a component in a electric circuit.Nibble A group of 4 bits is called a nibble.ByteA group of 8 bits is called a byte. A byte is the smallest unit which can represent a data item or a character.WordA computer word, like a byte is a group of fixed number of bits, processed as a unit, which varies from computer to computer but is fixed for each computer.The length of a computer word is called word-size or word length. It may be as small as 8 bits or maybe as long as 96 bits. A computer stores the information in the form of computer words.
Basic Organization of Computer
May 6th, 2021
Basic organization of computer
RAM & ROM
RAM stands for Random Access Memory
ROM stands for Read Only Memory
Differences between RAM and ROM
RAM
Differences
ROM
Stores during and after processing
Data and Program
Stored by manufacturer
Stores information temporarily
Content
Stores information permanently
Very fast but uses a lot of power
Processing Time
Fast but uses very little power
Volatility
Volatile
Non-volatile
There are no rows in this table
Difference between Save as Save As
Units of Memory (May 10th)
Powers of 2
Want to print your doc?
This is not the way.
This is not the way.
Try clicking the ··· in the right corner or using a keyboard shortcut (
CtrlP
) instead.