This document describes two objects: a calculator and an air cooler. It defines each object, provides a diagram, lists their components, and explains how each works. Calculators are electronic machines that perform mathematical calculations using a display screen, keys, and battery. Air coolers are devices that cool air through the evaporation of water, using a fan, pump, water tank, and cooling pad. They work by cooling air through the evaporation process and are effective in dry climates but air conditioners provide better relief in humid areas since air coolers require periodically refilled water tanks.

1. By Dawle A P

2. Object Description
 Definition
 Diagram
 Components
 Working

3. Object Description
For example Calculator
 Definition: A calculator is an electronic
machine that automatically performs
mathematical calculations.

4. Object Description: Calculator
Diagram

5. Object Description: Calculator
Components:
 Display Screen
 Keys
 Battery

6. Object Description: Calculator
Working and use:
 MC Memory Clear
 M+ Memory Addition
 M- Memory Subtraction
 MR Memory Recall
 C or AC All Clear
 CE Clear (last)
 ÷ Division × Multiplication
- Subtraction + Addition
= Result

7. Object Description
example no. 2 Air Cooler
 Definition: Air cooler is a device that cools
air through the evaporation of water.

8. Object Description: Air Cooler
Diagram

9. Object Description: Air Cooler
Components:
 Fan
 Pump
 Water Tank
 Cooling Pad

10. Object Description: Air Cooler
Working and use:
An air cooler can be an affordable and
economical alternative to air conditioning. Air
coolers work on the principle of heat loss
during the evaporation process, resulting in
cooler air. They are much more effective in a
very dry climate. In a more humid climate, an
air conditioner will give greater relief from the
heat. Since an air cooler works on the principle
of evaporation, it uses a water tank that must
be filled periodically.