C.O. 1

1.BASIC FUNCTIONAL UNITS 

#computer .A computer is a electronic and digital device which takes information (data) from user in a particular form and manipulate it to produce a result in the form of information or signal .

# the data given by user is processed by computer according to given path

1.Input: This is the process of entering data and programs in to the computer system by using the input devices.

2. Storage (Memory): The process of saving data and instructions entered into computer using input units permanently is known as storage.which only deleted by user.

Storage are mainly divided into :

# Permanent memory 

# Main memory 

# Cache memory 

3. Processing: The task of performing operations like arithmetic and logical operations is called processing.

The processing carry out in computer into two units :

1.ALV

2.Control units 

1.ALV (Arithmetic Logical Unit) : 

After storing the data the actual processing performed by Arithmetic Logical Unit. Like (addition, subtraction, multiplication, division, logic and comparison.)

2.Control Unit (CU)

The next uint of computer is the Control Unit, which acts like the supervisor seeing that things are done in proper way  .

4. Output: This is the process of producing results from the data for getting useful information.which are displays on the screen of monitor.

# this is the path:

~  BY SAHIL M.