A computer is a digital system with microelectronic technology capable of processing data from a group of instructions called a program. The basic structure of a computer includes microprocessor (CPU), memory and input / output (I / O) devices, along with buses that allow communication between them. The main characteristic that distinguishes it from other similar devices, such as a non-programmable calculator, is that it can perform very diverse tasks by loading different programs into memory for the processor to execute.
TYPES OF COMPUTER:
They are classified according to the principle of operation of Analog and Digital.
Analog Computer:
1.- Taking advantage of the fact that different physical phenomena are described by similar mathematical relationships (eg Exponential, Logarithmic, etc.) can deliver the solution very quickly. But they have the disadvantage that when changing the problem to solve, it is necessary to rewire the circuitry (change the Hardware).
Digital Computer:
1.- They are based on bistable devices, i.e., which can only take one of two possible values: '1' or '0'. They have the advantage of being able to run different programs for different problems, without having to physically modify the machine.