A computer is a fast electronic item, which operates under the control instructions that can store, send and interpret data. The first products in a way reminiscent of modern computers have been introduced in the mid 20th century, especially in the 1940s.

The concept of multiple machines is similar to the computers that existed long before that date. The first models of electronic computers were the size of a large room that draws significantly power of around 700 modern PCs.

Moreover, computers are now based on integrated circuits. They are a million times more powerful while only occupy a small space. Today, computers can be built small enough to fit on the clock. The battery is enough to make it work. Personal computers are also known icons in the information age and the sometimes confuse a computer, while computer more common today is what we call embedded computer.

Since the word integrity implies, this type of alugueldecacambassp computer is a simple and very rarely used to control devices. In addition, computers are embedded in machines such as hunters, digital cameras, industrial robots, and toys for children.

Computers are versatile because they have the ability to perform as well as storage instructions, called programs. They say the team is probably capable of performing the tasks that any other computer can do. This means that any kind either an individual or a super-computer can do the same computational tasks arising from or given to them because they have enough storage capacity.

How does a computer?

In general, ithas four sections, namely, the control unit, the ALU or arithmetic logic unit, and the I / O or input and output devices. Groups son said bus interconnect all parties. The control unit of the ALU and the basic input / output with other computers that are closely related to the above products are known as the processor or CPU. Early versions of the CPU were made of several different elements, but since the 1970s, processors are usually constructed in a single integrated circuit called a microprocessor.

The control unit also known as a central controller and control system that manages other computer components.

Its primary method is to decipher or interpret one by one, all instructions in a program. Decode each set Training and transformed into a sequence of signals that control the functions of computer parts. The advanced control systems of equipment, probably in May to change part of the sequence of instructions improve performance.

An important component of all CPUs is the special unit of memory or a register called the program counter. The call cons of the program keeps track of the memory location where you read the following instruction set. The control system has several functions. One is to read the code of the next set of instructions the indicated cell, the program counter. Another feature is that decodes the digital codes instructions in a series of signals or commands for each system.