Full form of computer

Computer is not a shortened form it’s actually derived form a Greek\Latin\French (whichever)

word “computer” meaning let’s calculate.

              All computers contain a central processing unit that interprets and

executes instructions; input device, such as keyboard and a mouse, through

which data

                   C    =    Commonly

                   O    =    Operatable

                   M   =     Machine     

                   P    =     Particularly

                   U   =      Used for

                   T   =      Trade

                   E   =       Education/Entertainment &

                   R   =       Research

                                                                                                   Ref.: stealing your women and horses since 1843 

TYPE OF COMPUTERS

Thus on the basis of different types of inputs, computers can accept, they can be classified in following categories:

1)ANALOG COMPUTERS

2)DIGITAL COMPUTERS

3)Hybrid Computer

ANALOG COMPUTERS

Analog is Greek words which means establishing similarities between two quantities its tasks by measuring continuous of physical variables such as pressure. Voltage, acceleration, power, force, viscosity, temperature etc. are represented by electric current or voltage signals.

When physical parameter is continuously

varying, its analogous electrical parameter also will be continuously varying.

Such a continuously varying electrical voltage is fed as in put to the analog

computer which are then manipulated using various electronic modules such as inverters, comparators, multipliers, integrators etc. and the results are obtained.

This results are measured and disposed.

DIGITAL COMPUTERS:

A digital computer is machine that stores data in a numerical format and

performs operations on that data using mathematical manipulation. This type of computer typeically includes some sort of device to store information, some

method for input and output of data, and components that data. Digital computers

are almost always electronic but do not necessarily need to be so.

       There are two main methods of modeling the world with a computing machine analog computers use some physical phenomenon, such as electrical voltage, to

model a different phenomenon, and perform operations by directly modifying the

stored data. A digital computer, however , stores all data as numbers and performs

operations as the ones and zeroes that make up these numbers are easily represented with simple on-off electrical states.

               Basically computer means digital computer. The world comes from the

word digit. Digital computer uses symbol, number as input. Mainly digital computer based on mathematical method and gives a proper result.

Hybrid Computer (Analog + Digital) 

         Hybrid computers are computers that are designed to provide functions and features that are found with both analog computers and digital computers. The idea behind this combined or hybrid computer model is to create a working unit that offer the best of both types of components with most designs, the analog components of the equipment provide efficient processing of differential equations, while the digital aspects of the computer address the system.

 

By creating this type of integrated computer, the benefits of both analog and digital computing are readily available. A hybrid computer is extremely fast when it comes to meaning equipment, even when those calculations, are extremely complicated. This advantage is made possible by the presence of the analog components inherent within the design of equipment.

A)General Purpose

B)Special Purpose 

General Purpose Computers: 

        The digital computers which are designed to do variety of application through 

the use of stored program are called the General Purpose Computers. The 

instructions needed to perform a particular task are not wired permanently into

the internal storage. They are reds from an input device & placed into the internal memory until they are needed.

        Though, their versatility is accomplished with a loss of speed & efficiency,

these have an upper edge because of their lower cost & better services. The personal computers available in market are mostly general purpose computers. Example are: Payroll, Sales, analysis etc.