Q.1 What is Computer? Explain its Characteristics and Limitations?
Ans. Definition :– A computer is a fast electronic device, processing the Input data
according to the Instructions given by the Programmer/User and provides the desired
information as an output.
The word 'Computer' is basically derived form the word 'computer', which means to calculate
some thing. But in today's scenario if we told that computer is just a calculation machine, it is not true.
We can do a lot more than calculation. Let's take few examples — Your Bio-Data, Examination
Records, Admission Register, Airlines and Rail Reservation etc. In all these cases you will find apart
form just calculation the computer is managing information and data. So, Computer is electronic
devices (Machine) which accept our data, process them and gave output.
Input Process Output Cloth
Tailoring Wearable Veg Cooking
Eatable
Terminology used in Definition of Computer :–
Ø Data :– Collection of facts or figures.
Ø Information :– Processed data is known Information. Data and
Ø Input :– instructions given to computer. Manipulation of
Ø Process :– data.
Ø Output :– Information obtained after processing of data
,Characteristics of Computer:-
(1) Speed: - A computer is very fast device. It can perform large amount of work in a few seconds. Where
human being worked a particular work for whole day, computer does the same in very short time. Today,
computers can perform 100 million computations in one second. The speed of computers are measured in terms
of microseconds, Nano seconds and even in Pico seconds.
Where 1 second=10-6 micro second
=10-9 nano second
=10-12 Pico second
(2) Accuracy :– The computer is 100% accurate and capable to perform arithmetical calculation and logic
operations with the same accuracy. It can never make mistakes. All mistakes are done by users. The cause
of errors may be due to inaccurate feeding data or due to wrong setting of the programmer. The accuracy
of a computer is Illustrated well by the term GIGO; i.e. Garbage In Garbage Out, which means if faulty
instruction are provided for processing the data, obviously wrong answer will be given.
(3) Diligence :– A computer can operate twenty four hours continuously without taking any rest. It has no
feelings or no emotions, if you work continuously for 3 hours, you feel lack of concentrate but a computer is
free from these and you will get the result you
want with the same speed and same accuracy.
(4) Versatility :– Versatility is one of the most wonderful features about the computer.
One moment, it is preparing the results of a particular examination, the next moment it is busy in preparing
electricity bills, and in between it may be helping an office secretary to trace an important letter is seconds.
It can do multiple works at a same time. It also used in data processing jobs, weather fore casting, ticket
reservation purpose, multimedia designing, animations, accountancy etc.
(5) High Memory :– computer has made more memory or storage capacity than
human beings. It can store millions of data and instructions, which can be retrieved and
recalled even after a number of years. This is not possible in case of human brain.
(6) Automation :– Computers are automatic in operation. It means once the data and
instructions are fed to a computer, human interventions are not required. The computers
manipulate the data according to the instructions and continue doing so till the last instruction is
executed.
(7) Superiority of Manufacture :– Computer hardware is manufactured with the best
materials by the most sophisticated processor. It has superiority of manufacture as compared
to other machines.
(8) Reduce the Paper Work :–
, (9) Solve Complete Problems :– Computer solved those problems which are not solved
by human being computer solved the computer solved the problems in seconds.
Limitations of Computer:-
The main limitations of computers are as follows :–
Dependency :– Fully Dependent upon human beings.
Lack of Intelligence :– Computers do not have their own Intelligence and hence cannot think for example, a
computer can create music but cannot tell its quality. In other words, computer has no brain.
Lack of Detecting Errors :– Computer can detect only syntax error, it cannot detect flaw or error in logic.
Lack of Capability :– It has no Capability to take any decision by itself, like a human being, it cannot judge by itself
for any valid or non-valid data.
No I.Q. :– A computer is not a magical device. It can only perform tasks that a human being can. The difference is
that it performs these tasks with unthinkable speed and accuracy. It possesses no intelligence of its own. It I.Q. is
zero, at least today. A computer cannot take its own decision in this regard.
No Feelings :– Computers have no feelings and no emotion because they are machine.
Lack of Creativity and imagination :– It does not have intuition and cannot draw
conclusion without going through all the intermediate steps.
Experience :– Computers don't learn form experience.
Q. 2 What is Computer? What are various Applications of Computer?
Or
What is Computer? What is the scope or impact of computer in business
application?
Ans. Definition :– A computer is a fast electronic device, processing the Input data
according to the Instructions given by the Programmer/User and provides the desired
information as an output.
Or
The word 'Computer' is basically derived form the word 'computer', which means to calculate
some thing. But in today's scenario if we told that computer is just a calculation machine, it is not true.
We can do a lot more than calculation. Let's take few examples — Your Bio-Data, Examination
Records,Admission Register,Airlines and Rail Reservation etc. In all these cases yo will find apart form
just calculation the computer is managing information and data. So, Computer is electronic devices
(Machine) which accept our data, process them and gave output.
Ans. Definition :– A computer is a fast electronic device, processing the Input data
according to the Instructions given by the Programmer/User and provides the desired
information as an output.
The word 'Computer' is basically derived form the word 'computer', which means to calculate
some thing. But in today's scenario if we told that computer is just a calculation machine, it is not true.
We can do a lot more than calculation. Let's take few examples — Your Bio-Data, Examination
Records, Admission Register, Airlines and Rail Reservation etc. In all these cases you will find apart
form just calculation the computer is managing information and data. So, Computer is electronic
devices (Machine) which accept our data, process them and gave output.
Input Process Output Cloth
Tailoring Wearable Veg Cooking
Eatable
Terminology used in Definition of Computer :–
Ø Data :– Collection of facts or figures.
Ø Information :– Processed data is known Information. Data and
Ø Input :– instructions given to computer. Manipulation of
Ø Process :– data.
Ø Output :– Information obtained after processing of data
,Characteristics of Computer:-
(1) Speed: - A computer is very fast device. It can perform large amount of work in a few seconds. Where
human being worked a particular work for whole day, computer does the same in very short time. Today,
computers can perform 100 million computations in one second. The speed of computers are measured in terms
of microseconds, Nano seconds and even in Pico seconds.
Where 1 second=10-6 micro second
=10-9 nano second
=10-12 Pico second
(2) Accuracy :– The computer is 100% accurate and capable to perform arithmetical calculation and logic
operations with the same accuracy. It can never make mistakes. All mistakes are done by users. The cause
of errors may be due to inaccurate feeding data or due to wrong setting of the programmer. The accuracy
of a computer is Illustrated well by the term GIGO; i.e. Garbage In Garbage Out, which means if faulty
instruction are provided for processing the data, obviously wrong answer will be given.
(3) Diligence :– A computer can operate twenty four hours continuously without taking any rest. It has no
feelings or no emotions, if you work continuously for 3 hours, you feel lack of concentrate but a computer is
free from these and you will get the result you
want with the same speed and same accuracy.
(4) Versatility :– Versatility is one of the most wonderful features about the computer.
One moment, it is preparing the results of a particular examination, the next moment it is busy in preparing
electricity bills, and in between it may be helping an office secretary to trace an important letter is seconds.
It can do multiple works at a same time. It also used in data processing jobs, weather fore casting, ticket
reservation purpose, multimedia designing, animations, accountancy etc.
(5) High Memory :– computer has made more memory or storage capacity than
human beings. It can store millions of data and instructions, which can be retrieved and
recalled even after a number of years. This is not possible in case of human brain.
(6) Automation :– Computers are automatic in operation. It means once the data and
instructions are fed to a computer, human interventions are not required. The computers
manipulate the data according to the instructions and continue doing so till the last instruction is
executed.
(7) Superiority of Manufacture :– Computer hardware is manufactured with the best
materials by the most sophisticated processor. It has superiority of manufacture as compared
to other machines.
(8) Reduce the Paper Work :–
, (9) Solve Complete Problems :– Computer solved those problems which are not solved
by human being computer solved the computer solved the problems in seconds.
Limitations of Computer:-
The main limitations of computers are as follows :–
Dependency :– Fully Dependent upon human beings.
Lack of Intelligence :– Computers do not have their own Intelligence and hence cannot think for example, a
computer can create music but cannot tell its quality. In other words, computer has no brain.
Lack of Detecting Errors :– Computer can detect only syntax error, it cannot detect flaw or error in logic.
Lack of Capability :– It has no Capability to take any decision by itself, like a human being, it cannot judge by itself
for any valid or non-valid data.
No I.Q. :– A computer is not a magical device. It can only perform tasks that a human being can. The difference is
that it performs these tasks with unthinkable speed and accuracy. It possesses no intelligence of its own. It I.Q. is
zero, at least today. A computer cannot take its own decision in this regard.
No Feelings :– Computers have no feelings and no emotion because they are machine.
Lack of Creativity and imagination :– It does not have intuition and cannot draw
conclusion without going through all the intermediate steps.
Experience :– Computers don't learn form experience.
Q. 2 What is Computer? What are various Applications of Computer?
Or
What is Computer? What is the scope or impact of computer in business
application?
Ans. Definition :– A computer is a fast electronic device, processing the Input data
according to the Instructions given by the Programmer/User and provides the desired
information as an output.
Or
The word 'Computer' is basically derived form the word 'computer', which means to calculate
some thing. But in today's scenario if we told that computer is just a calculation machine, it is not true.
We can do a lot more than calculation. Let's take few examples — Your Bio-Data, Examination
Records,Admission Register,Airlines and Rail Reservation etc. In all these cases yo will find apart form
just calculation the computer is managing information and data. So, Computer is electronic devices
(Machine) which accept our data, process them and gave output.
