Human wants are varied. They differ from place to place and time to time. In fact, they are unlimited. It means that human wants are numerous. A man is always bundle of desires. For example, a boy may want a bicycle than he may need a scooter or a motor-cycle. His wants are unlimited in relation to his means.

Different wants exist simultaneously and all of them cannot be satisfied at once. For example, a student may have a desire for a pair of shoes or terylene shirt,or a book, but all the wants cannot be satisfied with a limited amount of money. So there is a sort of competition among the wants. In such cases, the problem of choice arises. He has to choose between the more urgent wants and less urgent wants. Thus there is competition among the wants.

Sometimes in order to satisfy a particular want we need more than one good, Suppose a man wants to construct a house he may require cement, bricks, timber, labour etc. Thus to satisfy a particular want he need several things. Tooth brush and tooth paste, pen and ink, car and petrol, bat and ball are com-plementary good. There are also alternative sources of satisfying a particular want. Suppose a person wants some recreation, he may go to cinema or drama or listen to radio or T.V. Wants vary in their Intensing: Wants differ in importance. Some wants are very urgent and others can be postponed. Most of the people at present take coffee as they get up from bed everyday. This has become a habit with them. Smoking is also an example for this.

So, wants give rise to activities. Discovery of new product or invention of new style stimulates wants and increases consumption.

In spite of all these characteristics of wants, they are influenced by advertisements.

Since the people give room for wants, they are able to meet requirements for necessaries, comforts and luxuries. The term Wealth means stock of goods existing at a given time that have money value. In fact, it increases the degree of confidence to the people. Everyone wants to raise his standard of living. Here the term standard of living means the necessaries, comforts and luxuries that go into consumption pattern of a particular class of people. So, this way,everyone enjoys a certain income and a certain status in society. Standard of Living depends upon many things such as income, education, size of family and habits etc. As far as India is concerned, these are limited so compared to an American,an Indian enjoys a low standard of living. In order to raise standard of living, people should increase their expenditure on necessaries, comforts and luxuries. For this, they should be well educated about existing as well as new products in the market. Products are not from single industry but from many. To understand, please refer the table below.

Electrical goods - Simple bulbs,Various discharge lamps, Generators, Flourescent lamps, Electric Arc Lamps(useful in Cine Projectors), Electric motors , Cables and Wires, Batteries, Fans

Electronic goods - Simple Calculators, Televisions, Electronic Clocks, DVD Players, Various types of cell phones, Computers are some of the examples of assembled Electronic goods. Valves, Resistors, Capacitors, Transistors, Integrated Chips, Thyristors, Field Effect Transistors

Mechanical goods - Cycles, Scooters, Bikes, Cars(Hyundai, Ford etc), Air Conditioners, Refrigerators etc.

Optical goods - Microscopes, Digital Video Cameras, Cine Projector Lens, Various convex and concave mirrors

Educational Instruments - Drawing Board and stand,Tee square or mini drafter, set-squares, protractor and clinograph, pencils, Rubber or Eraser and erasing shield, duster, drawing ink, sand paper,Pens, Pencils, Sketches

System software products - operating system, assembler, compiler, interpreter, debugger, text editors etc.

Application software products - C, Pascal or Java etc.

Organic products - tables, chairs, doors ,gaskets, felt for packings, cork for insulation, footwares, bags, fibres for binding and oils etc.

Ceramic products - tiles, sanitary wares, insulators, bricks, refractories, cement etc.

Properties - land, house, hotel, jewel, machinery etc

Miscellaneous products - Beauty cosmetics, Medicinal prducts, Petroleum Products, Food products etc.

These industries include Electrical, Electronics, Mechanical, Optical, Hardware, Software(ex. Computer Games) etc. Obviously, we can conclude that buying definitely brings wealth as well as Standard of Living. The Kavi Ads will make you understand the concept of Product and Service and their different industries. So we can make profitable and satifactory purhcase on these goods and services.