Without the extensive use of computers, preset era cannot offer us numerous miracles. Really, computers have changed our life completely. Everybody should learn how to use computers.
Sunday, June 13, 2010
Limitations of computer
A.It cannot think since they do not have a brain of their own.B.It cannot change the steps while performing tasks.C.It cannot memorize as long as they are not given the instruction to store in the secondary storage.
Computer Application areas
1. Education
A.It used as a teaching learning tool.
B.It is used in a result processing.
C.Exam preparation such as questing preparation etc.
2. Health and Medicine
2. Health and Medicine
A.Research in health.
B.Development of Health Net of doctors and Hospitals
C.CT Scanning and Ultra sound
D.Record Kipping of patients
3. Banking and Finance Company
3. Banking and Finance Company
A.Audit record keeping, finding dividend of investors.B.Electronic Monet Transfer
C.Note calculation Mechanism
4. Hotel Management
4. Hotel Management
A.Personnel management
B.To keep inventory report
C.Documentation
D.AirlineCorporation
E.Ticket booking/reservation
F.Ticket cancellation
G.Account and administration
5.Agriculture Development
5.Agriculture Development
A.Agro census
B.Research and development manpower development and supervision
Obstacles faced in computer implementation
A.Lack of knowledge of computers from high ranking offices.B.Suspect on loss of data.C.Hesitation in giving fair information to the public.D.Difficult to meet the additional cost and expense.E.No interest in changing towards new technology.F.Lick of trained computer personnel or manpower.
Impact of Computer
Positive
A.Work can be performed quickly B.More information can be stored in a small space.C.Data access is easy and its processing is at great speed.D.Documents can be kept secretly.E.Computers can be used for various proposes.
Negative
Negative
A.It is expensive.B.Accidental loss of may create big problem.C.Data piracy may bring negative impact on the organization.D.Use of computer leads to increased unemployment.E.Huge data and information can be lost due to hard disk crash and other damages.
Types of Computer
1. On the basis of work. Analog computer.Digital computer C.Hybrid computer
2. On the basis of size. Mainframe computer.Mini computers.Microcomputer
3. On the basis of brand A.IBM PCB.IBM CompatibleC.Apple/Macintosh
4. On the basis of Model.XT Extended Technology.AT Advanced TechnologyC.PS/2 Personal System -2
Note:-
Analog computers It woke on the principle of continuous change in the physical values. Presley and Fcit two are Examples of analog computers. They are specially designed computers.
Digital computers It woke on the principle of two states: 0and 1. The data are represented as 0 and 1 in digital computers.
Hybrid computers It has the good quality of analog and digital. They can convert analog data into digital or vice-verse. They are specially designed computers such as flight simulator.
Mainframe computers They are large in size with parallel processing, multitasking and multiprogramming capacities.
Minicomputers They are smaller than mainframe and larger the micros.
Microcomputers They are smallest computers. They are small, robust, with latest processor, high speed and huge storage capacity. Laptop and Notebook are also microcomputers.
IBM PC They are the computers manufactured by IBM Company.
IBM Compatible computers They are developed by other companies on the same principle and technology of IBM.
Apple/Macintosh computers They are manufactured on CMOS technology.
XT computers They have become obsolete.
AT computers They are improving with new technology. Pentium processors are the latest processors used in AT machines.
PS/2 model computers They are manufactured by IBM with different architectural design which is considered much faster and virus resistance.
2. On the basis of size. Mainframe computer.Mini computers.Microcomputer
3. On the basis of brand A.IBM PCB.IBM CompatibleC.Apple/Macintosh
4. On the basis of Model.XT Extended Technology.AT Advanced TechnologyC.PS/2 Personal System -2
Note:-
Analog computers It woke on the principle of continuous change in the physical values. Presley and Fcit two are Examples of analog computers. They are specially designed computers.
Digital computers It woke on the principle of two states: 0and 1. The data are represented as 0 and 1 in digital computers.
Hybrid computers It has the good quality of analog and digital. They can convert analog data into digital or vice-verse. They are specially designed computers such as flight simulator.
Mainframe computers They are large in size with parallel processing, multitasking and multiprogramming capacities.
Minicomputers They are smaller than mainframe and larger the micros.
Microcomputers They are smallest computers. They are small, robust, with latest processor, high speed and huge storage capacity. Laptop and Notebook are also microcomputers.
IBM PC They are the computers manufactured by IBM Company.
IBM Compatible computers They are developed by other companies on the same principle and technology of IBM.
Apple/Macintosh computers They are manufactured on CMOS technology.
XT computers They have become obsolete.
AT computers They are improving with new technology. Pentium processors are the latest processors used in AT machines.
PS/2 model computers They are manufactured by IBM with different architectural design which is considered much faster and virus resistance.
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