Introduction to Computer , types of computer,classification of computer What computer can do and cant do
PRESENTATION # 01
SUBMITTED TO :
SIR UBAID ULLAH
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TYPES OF COMPUTERS
CLASSIFICATION OF COMPUTERS
CHARACTERISTICS OF COMPUTERS
WHAT COMPUTERS CAN DO
WHAT COMPUTER CAN’T DO
A computer is a programmable machine . The two
principle characteristics of a computer are :
It responds to a specific set of instructions in a
well-defined manner .
It can execute a prerecorded list of instructions
Classification of Computer
When we study on the basis of their
Speed of execution.
Power of computational process.
Then classified into following types.....
Process data at very high speed.... MIPS (
million instreaction in per second ).
Control data more then 1000 users.
Process hundred different program at a time.
Major manufacture compny.
Same as mainframe
Smaller in size
Less speed and capacity
First interduced in 1960s
Major manufacturers compny
CHARACTERISTICS OF COMPUTER
Word length :
A digital computer operates on binary digits – 0 and 1 .
The number of bitsthat a computer can process at a time in parallel
is called its word length .
Computers can calculate at very highspeed, for example it can
execute millions of instructions per second .
The accuracy of a computer systemis very high . Errors
in hardware can occur , but error detecting and
correcting techniques will prevent false result .
Capability of storing and
retrieving hugeamounts of
data in a fast and efficient
manner is one of the
Computer can perform every difficult task flawlessly
and execute the programs in the correct sequence .
Computer is a versatile machine . It is
capable of performing almost any
task , provided the task can be
reduced to a series of logical steps .
WHAT COMPUTER CAN DO?
an important role
in our daily life.
Now a days
computer is used
different tasks .
solve any type of
gives us right
answer and can
operations in a
amount of data
Computer can also
be the source of
We can entertain
In offices Computers can be used for
preparing letters , documents and reports.
In Hotels Computer are can be used for
advance booking of rooms , preparing bills and
providing enquiry services.
In Railways computer are can be used to do
rail reservation, printing of tickets and
preparation of reservation charts.
Doctors can use computers for diagnosing
illness and treatment of diseases.