An analog Computer is a form of computer which uses the continuously changeable aspects of physical phenomena such as electrical, mechanical or hydraulic quantities to model problem being solved. The Mechanical Analog computer were very important in gun fire control in second world war.

Digital Computers are that computer which has the capable of solving problems by processing information in discrete form. It operates on data including magnitudes letters and symbols that are expressed in binary form.   Digital computers can perform such tasks as to control industrial processes and regulate the operations of machines (analyze and recognize vast amount of business data) and simulate the behavior of dynamic systems. (eg. global weather patterns and chemical reactions etc.) 

Hybrid computers are that computer which has both analog and digital computer's functions and features. Analog computers provide efficient processing of different equations and digital computer provide logical operations associated with system.Creating this type of integrated computer, the benefits of both analog and digital  computer are readily available. Hybrid computer is extremely fast when it comes to managing equations, even those calculations are extremely complicated.