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Letters are the most vital means of written communication in the world of Internet and Mobile communication technology. They are still inseparable from the world of business, personal, social or the corporates. 

Letters can build relationships and destroy great business structures depending upon its quality. A major part of the world business is managed and run through these letters or correspondence. At the individual level, a person with flair for writing is bound to scale new heights in his career.

PURPOSE OF LETTER

Every letter, even the most routine, has a purpose. Try to establish the reasons for writing letter. For example :-
  • To make an enquiry.
  • To complain.
  • To answer a complaint.
  • To sell or persuade.
  • To answer a question.
  • To get something done.
etc.

All these statements of purpose are action - oriented.

PARTS OF LETTERS

Letters are in reality our message that we want to convey. There are certain letters forms which are useful for conveying our messages. These forms can be learnt only through practice.

Though there are different types of letters, yet there are certain matters of form which apply to all types of letters.

A letter can be divided into different parts; as
  1. Writer's address or The Heading
  2. Date of writing
  3. The salutation or the Greetings
  4. Message or the body of the letter
  5. The subscription or leave-taking
  6. The signature
  7. The superscription

1. Writer's Address or The Heading
Address of the person should be written at the top of the page on the left hand side according to the latest style. Each item of the address should be written in a seperate line.

2. Date of Writing
This should always be written in full and below the address. There should be a comma between the day of the month and the year.

3. The Salutation or the Greetings
It is a sort of greeting to the person to whom the letter is being written. It is written a little lower than the date to the left hand side of the page. The form of Greeting varies according to the relation between the writer and the receiver of the letter. 

For example:

(i) To family members,
Dear Father, My Dear Mother, Dear Aunt, Dear Raj, etc.

(ii) To Friends,
Dear Mukesh, Dear Mr. Mattu, Dear Gupta.

4. Message or Body of the Letter
It is the main part of the letter and contains all that the writer wants to convey. Each, idea must be dealt with in a seperate paragraph. Begin your letter by something definite and tell about the topic of the letter in the beginning. Think out what you want to say before you begin to write. Put down your points in some logical order.

5. The Subscription or Leave-taking 
It is the way of ending letter. The letter should be ended in a polite way. It's form depends upon the intimacy between the writer and the receiver of the letter, as, 

(i) To relatives : Yours affectionately
(ii) To friends : Yours sincerely
(iii) To acquaintances and strangers : Yours truly

6. The Signature or Name of the Writer
This must come below the Subscription, and more in a latest style to the left, as,

Yours sincerely,
Ram Kumar

OR

Yours affectionately,
Ram Kumar

OR

Yours truly,
Ram Kumar

7. The Subscription [or Enclosure]
It is the complete address of the person to whom the letter has been written. It should be carefully, spaced the first line (name and title of the receiver) well to the left.

Also Read - Salient or Most Important Features of Letter Writing
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COMPUTER

A Computer is a fast and accurate electronic machine or data manipulating system that is designed and organised to automatically accept and store input data, process it and produce output results under the direction of a detailed step by step stored set of instructions. Computer system comprises of input unit + processor + memory unit + output devices.

BASIC STUCTURE OF COMPUTER
Computer consists of three units :-
1. Input Unit
2. Central Processing Unit
3. Output Unit

INPUT UNIT

The purpose of input devices is to accept the information supplied to the computer which is required for solving the problems. The range of input devices is large as follows:

  • Keyboard
  • Mouse
  • Joystick
  • Optical Recognition Input
  • Scanner
  • Digital & Web Camera
  • Digitiser
  • Touch Screens


CENTRAL PROCESSING UNIT

It is the maine component of the computer hardware system. It consists of four units :-

  1. Primary Storage
  2. Arithmetic Logic Unit
  3. Control Unit
  4. Output Unit


Primary Storage Unit : This is the main storage area. It's main functions are - Holding the data in its memory till it is required to be processed; Holding the result of the processed data and Holding program instructions which are required for processing.

Arithmetic Logic Unit : This is used for the most of the logical processing, for example for calculations or comparisons. The arithmetic operations like +, -, *, & / are performed here. The logical operations like <, >, =, <=, >=, and <> are also performed here.

Control Unit : The control unit controls the flow and manipulation of data and information. It also control the flow of data from input devices to memory and from memory to output devices.

OUTPUT UNIT

These are those devices on which we get the output of our problems which were given through the input devices. The common output devices are given below -
1. Monitor & Displays
2. Printers
3. Plotters


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What is Polytechnic? Complete Guide to Diploma Courses & Jobs

What is Polytechnic?


Polytechnic refers to Diploma-level technical education that provides practical and skill-based training for students who want to work in fields like Electrical, Mechanical, Civil, Computer, or Electronics Engineering.

A Polytechnic is usually a 3-year diploma course that students can join after passing secondary school (10th grade). Some places also offer lateral entry after higher secondary or technical certificates.

Want to know about polytechnic
Complete Guide to Diploma Courses & Jobs


Why Choose Polytechnic?

Polytechnic courses focus on practical skills and help students get technical jobs faster than a regular degree. Many students choose Polytechnic because:

It’s affordable compared to a full Engineering degree.
It provides hands-on training in workshops and labs.
You can get a technical job quickly after completing the diploma.
You can often join the 2nd year of an Engineering degree directly after Diploma (lateral entry).

Popular Polytechnic Courses

Some common Polytechnic diploma branches are:

Diploma in Electrical Engineering
Diploma in Mechanical Engineering
Diploma in Civil Engineering
Diploma in Electronics & Communication
Diploma in Computer Science
Diploma in Automobile Engineering

Eligibility for Polytechnic

Minimum qualification: Pass in 10th grade (secondary school).
Some colleges conduct entrance tests or offer admission based on previous marks or certificates.

What Do You Study in Polytechnic?

Polytechnic syllabus focuses on:

Basic engineering subjects
Workshop practice
Lab experiments
Field training
Project work

Example: In Diploma Electrical Engineering, you study Electrical Machines, Circuit Theory, Power Systems, Wiring, Motors, and more.

Jobs After Polytechnic

After completing a Polytechnic diploma, students can:
Work as a Junior Engineer, Technician, Supervisor, or similar technical roles in the private or government sector.
Join apprenticeship programs in industries.
Start their own service business (like electrical wiring or repairs).
Appear for technical job exams or competitive tests for government or public sector jobs.

Can You Study Further After Polytechnic?

✅ Yes! Many students join an Engineering degree (like B.Tech or BE) directly in the 2nd year through lateral entry.
✅ You can also pursue professional certifications or part-time advanced courses.

Top Polytechnic Colleges

There are many recognized Polytechnic institutions worldwide — both government and private. Choose one that has good infrastructure, labs, workshops, and placement support.

Is Polytechnic a Good Option?

✅ If you want practical technical skills and a job-ready course after school, Polytechnic is a good option.
✅ It saves time and money.
✅ It builds a strong base for a technical career and future studies.

Conclusion

Polytechnic or Diploma courses are a smart choice for students who want to learn practical skills and build a strong career in Engineering and Technology.

If you have any questions about Polytechnic courses, syllabus, or career options, feel free to comment below!


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