In 1946 the first electronic computer that has a common function are assembled and called the ENIAC (elecronic Numerical Integrator and Calculator). ENIAC using more than 18,000 valves so that it takes place.
In 1948 the team of American scientists to create transistors that are smaller and cheaper to replace the valve.
Year 1959 was created a silicon chip / microchip about the size of a human fingernail which can contain thousands of transistors. Finally, the engineers at Intel assemble a complete computer with only 1 piece of chip called a microprocessor. The microprocessor is the brains of personal computers.
and now, the computer is very different. Look here
In 1948 the team of American scientists to create transistors that are smaller and cheaper to replace the valve.
Year 1959 was created a silicon chip / microchip about the size of a human fingernail which can contain thousands of transistors. Finally, the engineers at Intel assemble a complete computer with only 1 piece of chip called a microprocessor. The microprocessor is the brains of personal computers.
and now, the computer is very different. Look here