There are different types of computers classified based on their size and purpose. Supercomputers are the largest and most powerful for complex scientific tasks. Mainframes are critical for large organizations to process huge volumes of transactions simultaneously. Minicomputers are mid-sized and used to be more common for industrial control and scientific applications. Personal computers or microcomputers include desktops, laptops, tablets, and smartphones, and vary greatly in size but have processors contained on a single chip. Each computer type is suited for different tasks depending on required processing power, memory, and number of users.

1. Types of
Computer

2.  Computers are available in different
shapes, sizes and weights, due to these
different shapes and sizes they perform
different sorts of jobs from one
another.
 They can also be classified in different
ways. All the computers are designed
by the qualified computer architectures
that design these machines as their
requirements.

3.  A computer that is used in a home differs in size
and shape from the computer being used in a
hospital. Computers act as a server in large
buildings, while the computer also differs in size
and shape performing its job as a weather
forecaster.
 A student carrying a laptop with him to his
college is different in shape and size from all the
computers mentioned above

4. Classification of Computers by Size
Supercomputers
Mainframe computers
Minicomputers
Personal computers (PCs) or Microcomputers

5. Supercomputer
 a powerful computer that can process large amounts of
data and do a great amount of computation very
quickly.
Supercomputers are used for areas related to:
• Science
• Engineering
• Education
• Defense
• Aerospace
IBM Blue Gene P
Titan or OLCF-3 was a supercomputer built by Cray at
Oak Ridge National Laboratory

6. Supercomputers are useful for applications involving very large databases or
that require a great amount of computation.
Supercomputers are used for complex tasks, such as:
• Weather forecasting
• Climate research
• Scientific simulation
• Oil and gas exploration
• Quantum mechanics
• Cryptanalysis
Blood Flow
Weather Forecast

7. Some of the fastest computer in the
World
Fujitsu Fugako

8. Mainframe
Computer
 are high-performance computers with
large amounts of memory and
processors that process billions of
simple calculations and transactions in
real time. The mainframe is critical to
commercial databases, transaction
servers, and applications that require
high resiliency, security, and agility.
 Capable of simultaneously processing
for hundred or thousand of users.

9. How do mainframes work?
 Support massive simultaneous transactions and
throughput (I/O) with built-in capacity on demand and
built-in shared memory for direct application
communication
 Deliver the highest levels of security with built-in
cryptographic cards and innovative software; the
latest IBM Z® systems can execute up to 1 trillion secure
web transactions per day and manage privacy by policy.
 Offer resiliency through multiple layers of redundancy
for every component (power supplies, cooling, backup
batteries, CPUs, I/O components, cryptography modules)
and testing for extreme weather conditions.

10. Who uses mainframes?
 Almost everyone uses a mainframe , if you have
used an automated teller machine (ATM), you
have used a mainframe.
 Mainframe plays a central role in banking, finance,
health care and other private enterprises.

11. Uses of Mainframe:
:
1. E-Business and E-Commerce- Both e-business and e-
commerce use mainframe computers to perform business
functions and exchange money over the Internet
2. Health Care -anytime you go to the doctor, schedule
surgery, refill a prescription or inquire about your health
insurance benefits, this information is being accessed from
a mainframe computer.
3. Military Use- All branches of the armed forces use
mainframes for communication among ships, planes and
land; for prediction of weather patterns; and for tracking
strategic locations and positions using a Global Positioning
System.
4. Academics and Research- Public and private libraries, as
well as colleges and universities, use mainframe computers
for storage of critical data.

12. Minicomputer
Computer that is smaller, less expensive, and less powerful than
a mainframe or supercomputer, but more expensive and more powerful
than a personal computer. Minicomputers are used for scientific and
engineering computations, business-transaction processing, file handling,
and database management, and are often now referred to as small or
midsize servers.
PDP-11 an early Minicomputer
A minicomputer may also be called a mid-range
computer.

13. Primary uses of Minicomputer
1. Process control
Minicomputers are primarily used by the companies for the manufacturing
control of the process. Process Control has two primary functions- data acquisition and
feedback.
Ex:- factories make use of minicomputers to control the manufacturing process. If any
problem appears in any part of the process, then it recognizes the change and made
required adjustments.
2. Data management
Minicomputers that we use for the data management can do any task regarding
data like it can take, restore or generate data.
3. Communication
Minicomputers act as an interface between the human operator and a larger processor.
The user can run operations such as error checking with the help of minicomputer and then can
use the device for making adjustments also.
The other uses are as follows:
• They are also used for scientific computations.
• Used for business-transaction processing.
• Used for database management.
• Used for file handling
• Used for engineering computations.
IBM’s AS/400e

14. Microcomputer
 Microcomputer, an electronic device
with a microprocessor as its central
processing unit (CPU). Microcomputer
was formerly a commonly used term for
personal computers, particularly any of a
class of small digital computers whose
CPU is contained on a single integrated
semiconductor chip. Thus, a
microcomputer uses a single
microprocessor for its CPU, which
performs all logic and arithmetic
operations

15. Types of Microcomputer
Desktop Computer Laptop Netbook
All-in-One PC
Tablet Smartphone

16. Types of Microcomputer
Tabletop
Wearable Computer
(ex. Smartwatch)
Raspberry Pi
Piso Wifi Vendo Machine

17. Thank You