5 Parts of a Computer 1. Parts of a computer 2. MonitorA monitor or display (sometimes called a visual display unit) is a piece of electrical equipment which displays images generated by devices such as computers, without producing a permanent record.The size of a display is usually given as the distance between two opposite screen corners. One problem with t.
The basic parts of a desktop computer are the computer case, monitor, keyboard, mouse, and power cord. Each part plays an important role whenever you use a computer. Watch the video to learn about the basic parts of a desktop computer.

The major components of general-purpose computer system are Input Unit, main/internal Memory or Storage Unit, Output Unit, Central Processing unit. The CPU is further includes Arithmetic logic unit (ALU) and control unit (CU). All the units also referred to as “The functional units”.

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The following points highlight the five main components of a computer. The components are: 1. Input Unit 2. Memory or Storage Unit 3. Arithmetic and Logic Unit 4. Output Unit 5. Control Unit.

Component # 1. Input Unit:

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This unit transfers the information from outside to the memory or storage unit by any of the following methods:

(i) Punched cards which are passed through a punched card reader;

(ii) Punched paper tape, which is passed through a punched card reader;

(iii) Magnetic tape or disc which is passed through a magnetic tape or disc reader. A magnetic tape works like a domestic tape recorder. There are two reels and a mechanism for reading and writing data. Like domestic tape recorder, data recorded on the tape may be retained permanently or may be erased by recording other data over it. The tape is usually ½ in width and of varying length and is made of plastic material.

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Magnetic tapes work faster than punched cards and, like the punched cards, are used not only as an input device but also are used for storage and for recording output. Corrections can also be easily made on magnetic tape. Another additional advantage is that additional data can be inserted in this input unit which is not possible in punched paper tape or punched card after the tape or card has been punched.

Component # 2. Memory or Storage Unit:

A series of figures are stored in this unit and are released at electronic speed for calculations. This unit retains temporarily results of sub-calculations till further processing. This unit also serves the purpose of a store for final results of calculations before passing them to the output unit.

The cost of a computer and the size of the problem which it can handle depend upon its internal storage capacity. The term buffer is also used for a storage area in a computer which temporarily holds data after input or for output.

Component # 3. Arithmetic and Logic Unit:

Required calculations and logical operations are done in this unit by taking the necessary information from the memory unit. The arithmetic unit has the ability of performing all the ordinary operations of addition, subtraction, multiplication and division at a very high speed.

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The logic unit is used to make decisions where the instructions given to the computer require a decision to be made. Such a decision is of ‘yes’ or ‘no’ type.

Component # 4. Output Unit:

This unit turns out the end product, i.e., result, report or the final information to be obtained from the computer, e.g., economic order quantity of inventory, variances etc. This unit transfers the final information to an outside document like printed paper, punched card or magnetic tape.

Component # 5. Control Unit:

This unit is also called programme controller and is the most complex unit. It is the nerve centre because each unit of the computer works under the supervision of this unit.

Once the figures are fed into the input unit, the control unit takes complete charge and handles the figures as instructed by the computer programme. Physically the main component of the computer is the Central Processing Unit (C.P.U.). It is also known as Central Computer.

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This central processing unit contains the following units:

(i) Control Unit.

(ii) Memory or Storage Unit.

(iii) Arithmetic and Logic Unit.

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Hardware and Software:

The Physical Computer System, i.e., the computer itself, as a machine, key board, mouse, printer, and related equipment used in an electronic data processing system are called hardware. All the other materials utilized in selecting, installing and operating the electronic data processing system (except the operating personnel) are known as software.

Software includes not only the computer programmes (the sequence of instructions given to the computer) but everything about the Electronic Data Processing System which helps the Computer machine and its equipment’s to perform their functions. Software is an integral part of hardware; one cannot function without the other.

COMPONENTS OF A COMPUTER SYSTEM

The five classic components of a computer are input, output, memory, datapath, and control. Datapath and control are combined and called as the processor. The figure 1.1 shows the standard organization of a computer. This organization is independent of hardware technology.

The organization of a computer, showing the five classic components.

1.Input writes data to memory

2.Output reads data from memory

3.Memory stores data and programs Desi boyz full movie.

4.Control sends the signals that determine the operations of the datapath, memory, input, and output.

5.Datapath performs arithmetic and logic operations

Fig.1.1 The organization of a computer

Two key components of computers:

1.Input devices, such as the keyboard and mouse,

2.Output devices, such as the screen.

·Input device - A mechanism through which the computer is fed information, such as the keyboard or mouse.

·Output device - A mechanism that conveys the result of a computation to a user or another computer.

As the names suggest, input feeds the computer, and output is the result of computation sent to the user. Some devices, such as networks and disks, provide both input and output to the computer.

Input Device

The most commonly used input device is a keyboard. Whenever the user presses a key the control signal be sent to the processor. The processor respond for that by displaying the corresponding character on the display.

The next commonly used input device is a mouse.The original mouse was electromechanical and used a large ball. When it is rolled across a surface, it would cause an x and y counter to be incremented. The amount of increase in each counter told how far the mouse had been moved.

The electromechanical mouse has been replaced by the optical mouse. The optical mouse is actually a miniature optical processor including an LED to provide lighting, a tiny black-and-white camera, and a simple optical processor. The LED illuminates the surface underneath the mouse; the camera takes 1500 sample pictures a second under the illumination. Successive pictures are sent to a simple optical processor that compares the images and determines whet

Five Classic Components Of A Computer