What is the CPU - Central processing unit, What is the Operating System? - the most important software that runs on a computer, What are the four parts of a computer? - Input, storage, processing, output, What is a bit? - Logical state with one of two possible values., How many digits are there in the binary system? - Two digits, How many wires are needed to store numbers from 0 to over 4 billion in the binary system? - Thirty-two wires, True or false: Text, images, and sound can also be represented by binary numbers. - True, Why are smaller computers faster? - Has more transistors which equals more power., How fast does electricity move? - As fast as the speed of light., How many calculations per second can modern circuits perform? - Billions per second.,

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