Basics of Computer
                     BASICS OF COMPUTER
INTRODUCTION
Computer is a device that transforms data into 
meaningful information. It processes the input 
according to the set of instructions provided to it 
by the user and gives the desired output quickly.
Source: www.geeksforgeeks.org
FUNCTIONS
• Accept data
• Store data
• Process data as desired
• Retrieve the stored data as and when required
• Print the result in desired format
Source: www.geeksforgeeks.org
DIGITAL COMPUTERS
These are the modern computers which are 
capable of processing information in discrete form. 
In digital technology data which can be in the form 
of letters, symbols or numbers is represented in 
binary form i.e. 0s and 1s.
Source: www.geeksforgeeks.org
ANALOG COMPUTERS 
These computers are used to process data 
generated by ongoing physical processes. A 
thermometer is an example of an analog 
computer since it measures the change in 
mercury level continuously. 
Source: www.geeksforgeeks.org
HYBRID COMPUTERS
These use both analog and digital technology. It 
has the speed of analog computer and the 
accuracy of a digital computer. It may accept 
digital or analog signals but an extensive 
conversion of data from digital to analog and 
analog to digital has to be done. 
Source: www.geeksforgeeks.org
MICRO COMPUTERS
These are also known as Personal Computers. 
These type of digital computer uses a 
microprocessor (a CPU on a single chip) and 
include both desktops and laptops.
Source: www.geeksforgeeks.org
MINI COMPUTERS
These computers can support multiple users 
working simultaneously on the same machine. 
These are mainly used in an organization where 
computers installed in various departments are 
interconnected.
Source: www.geeksforgeeks.org
MAIN FRAMES
These computers are large and very powerful 
computers with very high memory capacity. These 
can process huge databases such as census at 
extremely fast rate. They are suitable for big 
organizations, banks, industries etc. and can 
support hundreds of users simultaneously on the 
network.
Source: www.geeksforgeeks.org
SUPER COMPUTERS
These are fastest and very expensive computers. 
They can execute billions of instructions per 
second. These are multiprocessor, parallel 
systems suitable for specialized complex scientific 
applications involving huge amounts of 
mathematical applications such as weather 
forecasting.
Source: www.geeksforgeeks.org
THANK YOU