Over thousands of years ago, the computers as we know progressed greatly. From the first materials used for counting until it continue to grow with technology.
The earliest form of counting was with fingers. Humans used some objects such as rocks and twigs to represent group of numbers.
After many years, the Abacus is discovered. the users move beads to perform calculations.
The Pascaline it is the first digital computer invented by Blaise Pascal. It used hand-spun mechanical wheels to input numbers, then output them as the answer.
Gottfried Leibniz then created the Step Reckoner as the improvement of Pascal's machine.
A mechanical calculator that operated automatically was invented by Charles Babbage called the Difference Engine.
Analytical Engine, the first fully-automatic calculating machine constructed by the British computing pioneer Charles Babbage can store data in the memory and perform logical comparison.
The First Generations (1940-1956) using the Vacuum Tubes. The computers are big, electricity consumption are high and solve problems one at a time are some characteristics of the first generation of computers. (ENIAC, UNIVAC, UAC, EDVAC and ASCC)
The Second Generation(1956-1963) using the Transistors. The computers are smaller, no warm up time, less energy, faster, more reliable and uses magnetic core. (Magnetic Core and UNIVAC III)
The Third generation(1964-1971) using the Integrated Circuits. The computers used Silicon chips called SEMI-CONDUCTORS, increase in speed and efficiency, power consumption lower and high level languages appeared.
The Fourth Generation(1971 to Present) using Microprocessors. The computer's integrated circuits are smaller and faster, portable computers are developed and great development in communication.(INTEL 4004 and Graphical User Interface)
The Fifth Generation(Present and beyond) they are only in the minds of advance research scientists and being tested out in the laboratories.
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