Computer Outpt Devices

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G. L. Bajaj Institute of

Management and Research

Greater Noida

TERM PAPER
ON
DETAIL STUDY OF OUTPUT DEVICES
OF COMPUTER

Submitted to:
Submitted by:
Prof. Loveleen Gaur.25. Monika Priyadarshni.
GLBIMR26. Md. Altaf Hussian Khan.
GREATER NOIDA27. Naman Jain.
28. Naveen kumar.
29. Nikhil Kumar.
30. Prakash Pandey.

ACKNOWLEDGEMENT

We would like to express our gratitude to all those who gave us the possibility to complete this term paper. We want to thank to Prof. Loveleen Gaur for giving us assistance, to do the necessary research work. We have furthermore to thank who supported us in our research work. We want to thank for all their help, support, interest and valuable hints.

TABLE OF CONTENTS

Page No.

1. INTRODUCTION4

2. output devices5

3. Hard copy output6

a. PRINTER6

b. PLOTTER25

4. Soft copy output30

a. LCD MONITOR30

b. CRT MONITOR34
C. Projector42

5. Audio output.47

a. SPEAKER 47

6. SUMMARY57

BIBLIOGRAPHY58

1. Introduction
A computer words comes from ‘compute’, which means ‘to calculate’.

What is computer?

Computer is an electronic device, which can deal both arithmetical and logical operation. Even though the size, shape, performance, reliability and cost of computers have been changing over the years. All computer systems perform the following five basic operations for converting raw input data into useful information and presenting it to a user: • Inputting Process of entering data and instructions into a computer system. • Storing Saving data and instructions to make them readily available for initial or additional processing as and when required. • Processing Performing arithmetic operations (add, subtract, multiply, divide etc.) or logical operations (comparisons like equal to, less than, greater than, etc.) on data to concert them into useful information. • Outputting Process of producing useful information or results for a user, such as printed report or visual display. • Controlling Directing the manner and sequence in which the above operations are performed.

Fig 1.1 Basic computer Operations

So, over here we are talking about output devices.

2. Output Devices

Output devices perform the reverse operation of that of an input device. It supplies information obtained from data processing to outside world. Hence, it links a computer with its external environment. As computer work with binary code, results produced are also in binary form. Therefore, before supplying the results to outside world, the system must convert them to human acceptable form. Units called out put interfaces accomplish this task. Output interfaces match the unique physical or electrical characteristics of output devices to the requirements of an external environment.

An output unit performs following functions;
1. It accepts the results produced by a computer, which are in coded form and hence, we cannot easily understand them. 2. It converts these coded results to human readable form. 3. It supplies the converted results to outside world.

There are three types of output:

1. Hard copy output.
2. Soft copy output.
3. Audio output.

3. Hard Copy Output

The physical form of output is known as hard copy. In general, it refers to the recorded information copied from a computer onto paper or some other durable surface, as microfilm. Hard copy output is permanent and a relatively stable form of output. This type of output is also highly portable. Paper is one of the most widely used hard copy output media. The principal examples are printouts, whether text or graphics, form printers. There are two types of hard copy output...
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