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Published byPamela Robbins Modified over 9 years ago
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What is a computer? Its an electronic machine which can accept data in certain form, process the data, and give the result of the processing in a specified format as information
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Input Data is fed into the computers memory processing The computer performs a set of instructions And processes the data output We see the result (out put) on the screen
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Computer system consist of tow parts Hardware: Any electronic part that u can touch and see Software: Is a set of instructions, calls programs which tell the computer what to do Main memory Central processing unit peripherals Storage devices input output
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What is the function of: Central processing unit. Main memory: Peripherals
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What is the function of: Central processing unit 1-excute program instructions. 2-coordinate the activities of all the other units. 3-it ’ s the brain of the computer. Main memory: 1-it ’ s a collection of RAM chips 2- holds the instructions and data Peripherals 1- it ’ s the physical units attached to the computer. 2-they include storage devices,input and output devices.
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peripherals Storage devices Provide a permanent storage for data and programs Input devices ( enable data to go into Computers memory) Output Extract the finished product from the system hard drives printer monitor mouseKeyboard DVD drives flash drives
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How to make communication between the computer and the devices? We can do it by the port; which we can plug a wide ش range of peripherals Modern computers have USB ports
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