Microprocessor(1971)

HOFF'S INVENTION BRING COMPUTER TO MASSES.

An integrated circuits that contain all  the function of a central processing unit of a computer is called microprocessor. it is cheap and small in size and easy to use

At the end of the 1960s, Intels Ted Hoff was asked to design several different calculator for a Japanese client. The traditional way would have been to develop several different integrated circuits silicons   chips to do the work. Even though these were small enough to be put into handheld calculator, programmable computer, which could do a variety of jobs, were still huge device.

Combining the small size integrated circuit with a power of programmable computer was an inevitable idea. Hoff decided that he would make a single integrated circuit that could be programmed to do many different things. Joined by fellow engineers Stan Mazor and Federico Faggin , Hoff squeezed an entire computer onto a single silicon chips, pairing it with a small memory to give it its instruction .his range of calculator all used the same chip, but each one had different instructions to instruct it how to behave.

Intel quickly realized that they had, quite literally in the palms of their hands, a programmable, general purpose computer with the power of machines that a decade before had taken up entire rooms. Making a deal with the calculator manufacture, Intel kept the right to sell the chip to other people and released the Intel 4004 processor in 1971.

The 4004, the first commercial microprocessor, was also the first step in the revolution that would sweep the world during the 1970s and 1980s, taking computer from their air conditioned industrial servitude and bringing them to homes, car, and even washing machine.

the controllers based on microprocessor are available in home appliance, such as microwave oven, washing machine etc.it is also used in controlling various parameter like speed, temperature, pressure. these are used with suitable transduction.