26 march 2015 muley sir computer science in env science mahesh joshi

ROLE OF COMPUTERS IN
ENVIORNMENTAL SCIENCE
ROLE OF COMPUTERS IN
ENVIORNMENTAL SCIENCE
M.Sc
[Second Semester]
Presentation

WHAT IS COMPUTER SYSTEM
• A computer system
is defined as
combination of
components
designed to
process data and
store files.
• A computer system
requires hardware,
software and a user
to fully function.
USER HARDWARE
SOFTWARE

HARDWARE
There are three component in hardware:
1. Input devices 2. Output devices
3. Storage devices 4.Processor

Input Devices
• Input devices are any electronic device
that are connected to a computer and
produces input signals such audio, text,
video, graphic.

Output Devices
• Output is the result of data processing
activity when it is presented externally to the
system. The output from a computer can be
printed or displayed form .
• An output device is hardware that is capable of
delivering or showing information to one or
more users.

Storage Devices
• Information and documents are stored
in a computer storage so that it can be
retrieved whenever they are needed later
on.
• Computer storage is the holding of data
in an electromagnetic form for access
by a computer processor.

Computer User
uses the computer for any purposes such as work, business
and entertainment.
TEACHERCHILDRENOFFICIER
STUDENTS PARENT BUSSINESS

1. It is self directing. The user merely feeds all the instructions to the
computer at the start and later proceeds without any need for human
intervention.
2. Ability to store and retrieve information. The computer has the ability
to remember or recall data when finds the need for them.
3. Ability to perform mathematical operations and solve complex formula
at high speed and with great precision. A very fast computer can
perform the addition of 20 million pairs of ten-digit numbers in one
second.
CAPABILITIES OF COMPUTERS

4. Ability to perform logic operation. The computer is capable of
comparing numbers, letters of alphabet and special characters.
Based on the results of comparison, the computer can direct to take
alternative actions.
5. Ability to perform logic operation Large amounts of data can be held
on compact storage devices. This allows organisations to cut down
on office space, rent and/or building purchase costs. Also allows for
cleaner, tidier working environment.
CAPABILITIES OF COMPUTERS

1. It can do only what is designed or programmed to do.
2. It cannot correct input data.
3. It cannot think and cannot derive meanings from objects. The
computer cannot interpret your favorite poem or your present mood
.
4. It can only process jobs expressed in a number of steps leading to a
precisely defined goal.
5. It cannot completely avoid making errors due to power fluctuations,
system malfunctions and human disorders.
LIMITATIONS OF COMPUTERS

6. Setting up a computer-based system costs money. There is the
initial investment of money on hardware and software. Periodically,
updates will be necessary. Maintenance of the system costs
money.
LIMITATIONS OF COMPUTERS
7. Organisations can become
to dependent on computer
based systems. Occasionally
they will malfunction. If the
break down is critical,
business could be lost. A
worst case scenario is the
organisation going bankrupt.

26 march 2015 muley sir computer science in env science mahesh joshi

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26 march 2015 muley sir computer science in env science mahesh joshi