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