Industries are divided into three broad categories namely primary, secondary and tertiary.
(i) Primary Industries They include all those activities which are connected with extraction and production of natural resources and reproduction and development of living organisms, plants, etc.
These industries are subdivided into two types
(a) Extractive Industries They are involved in extraction of products from natural resources. For example, wood from forests, fish from rivers and minerals from earth.
(b) Genetic. Industries They include activities connected with rearing and breeding of animals and birds and growing plants. For example, agricultural activities, animal husbandry, dairy farming, poultry farming, etc.
(ii) Secondary Industries They are concerned with the further processing of materials which have already been extracted at the primary stage. For example, the mining of an iron ore is a primary industry but manufacturing of steel from that iron is secondary.
Secondary industries may be of two types
(a) Manufacturing Industries They convert raw materials into finished products like cotton into textiles, wood into furniture or iron into steel.
(b) Construction Industries Activities concerned with the construction of houses, roads, bridges, dams, seaports, etc belong to the category of construction industies. The main feature of these activities is that the output consists of immovable goods.
(iii) Tertiary Industries They are concerned with providing support services to primary and secondary industries as well as activities related to trade. For example, transportation, banking, insurance, warehousing, etc.

Financial planning is the process of preparation of a financial blueprint of an organisation’s future operations. The objective of financial planning is to ensure that enough funds are available at right time.

The importance of financial planning is:
(i) It helps in forecasting what may happen in future under different business situations. By doing so, it helps the firms to face the eventual situation in a better way. By preparing a blueprint of these three situations the management may decide what must be done different situations.
(ii) It helps in avoiding business shocks and surprises and helps the company in preparing for the future.
(iii) If helps in co-ordinating various business functions, e.g., sales and production functions, by providing clear policies and procedures.
(iv) Detailed plans of action prepared under financial planning reduce waste, duplication of efforts, and gaps in planning.
(v)  It tries to link the present with the future.
(vi)  It provides a link between investment and financing decisions on a continuous basis.

Vending machines are the newest revolution in retail trade. These are coin operated machines and help in selling products like milk, soft drinks, hot beverages, platform tickets, etc.
2. The latest development under this concept is Automated Teller Machines (ATM) in the banking sector.
3. This machine has made it possible to withdraw money any time without visiting any bank.
4. These machines prove to be very useful for selling prepacked goods at a low price, having high turnover and are uniform in size and weight.
5. The main limitation of these machines is that the installation cost of these machines is very high. Also, the expenditure on regular maintenance and repair on them is very high.
6. Another limitation of this system is that the customers can neither see the product before buying nor return the unwanted goods.