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Showing posts from March, 2018

Program and Computer

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How the programs run internally?on single computer and on server? What is a computer: an electronic Device that manipulates information or Data. Definition: A computer is Machine made of devices that enable you to enter data (input) , process it(CPU), store it(Memory) and output the result. Logic Gate: AND , OR, NOT We use transistors to build logic gates(3) Transistors are connected in specific wires to create special circuits called logic gates. Logic gates can be combined to form calculations, make decisions and remember information. Microprocessor is responsible for running software or applications like web browsers... together with Operating System. An Integrated circuit that contains all the functions of CPU of a computer. 4 bit to 64 bit Microprocessor: CPU or Microprocessor is the Brain of computer. Clock Speed or Clock Rate : No of instructions per sec. One CPU Cycle Fetch -->Decode-->Execute-->store/write back to cache instructions