Introduction to Computer

  Computers are now affecting every of human activity are bringing about many changes in Government, Education, Industry, etc. The computers we see today is quite different from the one made in the beginning. The number of applications of a computer has increased the speed and accuracy of calculation has increased. computers are presently usedApplications of Computers:There are 2 types of applications of Computers for Business Purpose and...

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History of Computers

HISTORY & CLASSIFICATION OF COMPUTERS: The computers evolved as a result man search for fast and accurate calculating devises.  The work of the computers depend upon many others factor such as acceleration of technology growth in the early 1900’s. Charles Babbage begin too is work on the analytical machine, which provide to be proto type of the modern computer. This concept is opened up avenues for the future development of computers....

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Generations of Computers

History of Computer Generations: The evolution of computer started from 16th century and resulted in the form that we see today. The present day computer, however, has also undergone rapid change during the last 50 years. Generations in computers means a change or improvement in the technology over a period of time.  There are 5 Generations of computers they are:First Generation -> 1940-1956Second Generation -> 1956-1963Third Generation -> 1964-1971Fourth Generation -> 1971-PresentFifth Generation -> (Present and Beyond)  -...

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Memory Types

MEMORY UNIT AND IT'S TYPES: There are two types of computer memory (1) Primary (2) Secondary. Primary memory is accessible directly by the processing unit. RAM is an example of primary memory. RAM stores data temporarily. RAM will loose its contents when the power is switched off or if there is power failure. Secondary memory is located outside the computer. Primary  memory is more expensive than secondary memory. Secondary storage devices to store large quantity of data for future use.   Memory Unit : It is a device that...

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Types of Computers

 Computers can be classified into two types: (i) Digital Computers(ii) Analog ComputersDigital Computers:The digital computer is a digital system that performs various computational tasks. The word digital implies that the information in the computer is represented by variables that take a limited number of discrete values.Digital Computers work on the principle of counting of numbers. The internal architectural design of computers differs...

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Computer Parts

I think that the Personal Computer is really a collection of separate items working more pleasant and efficient. Let's take a look at each of these parts.   (1) Motherboard (2) CPU (Processor) (3) RAM (Memory) (4) Hard Drive (5) CD - Rom (6) Floppy Drive (7) Key Board (8) Mouse (9) Speakers (10) Monitor Basic Components : (1) System Unit (CPU) (2) Monitor (3) Key Board (4) Floppy Drive / Hard Drive Optional...

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Storage Devices

Secondary storage is also known as auxiliary memory or external memory or back up storage. The secondary storage devices are used in most computer systems to supplement the limited storage capacity of the primary memory section. This is similar to our keeping a diary or a note book when our memory is incapable of storing many facts and figures. We refer to our diary whenever we need the data. Secondary Storage Devices are 1. Magnetic tape 2....

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System Unit

  SYSTEM UNIT: The brain behind everything that takes place in pc is contained within the system unit. (a) Central Processing Unit (CPU): The Microprocessor or CPU is the computer's most important component. It does all the thinking for the p.c. and runs the programs. (b) Ram (Random Access Memory) : When a computer is switched on and is running a program, RAM is used for purpose of holding the program and its data, but when...

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Hardware & Software

The term hardware refers to the physical components forming the computer which are nothing but input, output, storage and processing units and additional accessories. The term of software refers to programs which are invisible to the eye and which are essential to be made use by the user to run on the computers either to run the system or to run his job. Software is a set of programs and the program is a set of the instructions. An instruction...

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