A microprocessor is similar to our human brain, it can be trained to do anything. It can be programmed to do anything we want based on it’s instruction set and capabilities. Sometimes solutions are very complex, circuits also becomes very complex if we try to solve it without programming.
Here is my analogy. Imagine you want to make a big building. Usage of BRICKS will make the construction process simple and cost effective. And it will also give you the freedom to make the building in shape and size what you like. Instruction set in a microprocessor are the bricks which you can use to solve your problem. By using those instructions you can easily solve complex program.
