Computer - 1
Computer - 1
Computer - 1
CLASSIFICATION OF COMPUTERS
Based on the size, usage and capability , computers are
classified into 4 main categories.
COMPUTERS
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MICROCOMPUTERS
Microcomputer is also called a personal computer as it is designed to meet the needs of an
individual person.
It uses a single microprocessor for its Central Processing Unit, which performs all logic and
arithmetic operations.
It provides access to a wide variety of applications, such as word processing, photo editing,
presentations, excel, e-mail, using internet, gaming, movies & music.
DESKTOP LAPTOP ,
TABLET PDA/HAND-HELD
COMPUTER NOTEBOOK
DESKTOP COMPUTER
Desktop computers are placed on a desk/table and runs on power
from an electrical wall outlet.
The CPU, memory and hard disk for storage are housed in the
system unit case. It can be placed either in vertical (tower model) or
horizontal (desktop model) position.
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POPULAR DESKTOP BRANDS
All-in-one
All-in-one
desktop
desktop
computers.
computers.
System unit
System unit
case not
case not
needed.
needed.
It usually fits in the lap of a person and hence the name.
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DIFFERENCE BETWEEN LAPTOP & NOTEBOOK
LAPTOP NOTEBOOK
Processing power is higher Processing power is lower
Heavier than a notebook. Lightweight
Weighs in the range of 2 - 4.5 kg Weighs less than 2.5 kg
Screen size is in range of 12-18 inches Always less than 15 inches
Typical laptops battery can last between 6 and 10 Notebook battery can lasts between 7 to 14 hours
hours unplugged.
Has integrated DVD drive Will not have DVD drive
Supports personal work and manage business Usually for personal usage
Price is higher than notebooks Cheaper than laptops
HP, Apple, Acer, Asus, Samsung, Lenovo, Sony, HP, Apple, Samsung, Sony, Toshiba, Dell
Toshiba, Microsoft, Dell, MSI
HP 110 Laptop, 1984 First notebook -NEC UltraLite, 1989 Apple PowerBook, 1991
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POPULAR LAPTOP BRANDS
In the field of education, mainframe In the field of travel, airlines and Indian
devices allow large educational institutes railways use mainframe computer to carry
like universities and colleges to store, out the huge number of bookings or
manage, and retrieve data related to cancellations, updating seat availability.
admissions, courses, teachers, students, The passenger information is stored
and employees. securely in the mainframe.
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MAINFRAME
IBM is the leading
manufacturer of
mainframes.
Others include
Hitachi, Fujistu , HP
Mainframe computers
usually have a very
long life. A mainframe
device can run
smoothly for up to 50
years after its
installation.
It is housed in a cupboard sized cabinet. In the earlier days, these large computers
used to fill an entire room. 13
SUPERCOMPUTER
Supercomputers are the most powerful computers. They are
thousands of times faster than a normal personal computer.
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SUPERCOMPUTERS
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WORLDS FASTEST SUPERCOMPUTER - FUGAKO
Fugako developed by Fujitsu in Japan can carryout 442 quadrillion (1015 ) computations per second.
It cost 1 Billion USD (~7500 crore INR) to build.
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INDIA’S INDIGENEOUS SUPERCOMPUTERS
India faced lot of difficulty in buying supercomputers so PARAM Siddhi-AI
decided to build its own.
The Centre for Development of Advanced Computing (C-DAC)
in Pune, India was established in 1987.
CDAC designed and assembled India’s first supercomputer
PARAM 8000 in 1991. It could perform a billion calculations
per second.
The team was led by Vijay Bhatkar who is known as the Father Vijay Bhatkar
of Indian Supercomputers.
PARAM Siddhi-AI is India’s fastest supercomputer (world rank
of 89)
Supercomputers in India are used at ISRO, and for weather
forecasting, seismic data analysis, aerospace engineering,
scientific research and pharmaceutical development.
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Thank You