Question

A tree is fixed at a place, so we say that it is stationary. Similarly, a house, a school, a factory, electric poles and telephone poles are all stationary objects which remain fixed at a place. On the other hand, a man, animals, birds, cars, buses, trains, ships and aeroplanes, etc., do not remain stationary all the time. They can move from one place to another. For example, a man moves when he walks along a road, a bird moves when it flies in the sky, and a fish moves when it swims in water. Similarly, a car or bus moves on a road, a train moves on the track, a ship moves in water and an aeroplane moves when it flies in air from one place to another. The movement of a body (or object) is called motion. A common characteristic of all the moving bodies is that they change their position with time. We can now define motion as follows: A body is said to be in motion (or moving) when its position changes continuously with respect to a stationary object taken as reference point. For example, when the position of a car changes continuously with respect to stationary objects like houses and trees, etc., we say that the car is moving or that the car is in motion. Let us take an example to understand the meaning of motion more clearly. In Figure 1 we see a car at position A in front of a house and a tree at a particular time (In this case, the house and tree are the stationary objects which are taken as a reference point). Now, after 5 seconds, we see the same car at position B which is quite far away from the house and the tree (see Figure 1). This means​

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Answer:

A computer is a programmable electronic device that accepts raw data as input and processes it with a set of instructions (a program) to produce the result as output.