How did Marcian Hoff's invention change computers?

Answer

Hoff invented the microprocessor that make computer smaller and cheaper.
Q&A Related to "How did Marcian Hoff's invention change computers..."
He invented the microprocessor, but that is not enough to answer the question fully.
http://wiki.answers.com/Q/10+How+did+Marcian+Hoffs...
Before the invention of the microprocessor, computers used to take
http://www.chacha.com/question/how-did-marcian-hof...
Well he did invent the microprocessor which caused a computer that took up a room, to be a computer much smaller.
http://www.faqs.org/qa/qa-4988.html
It freed the user from having to use the keyboard all the time and allowed "point and click" programs to be introduced. It is particularly useful when using graphics applications
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