Inside a Computer

Inside a Computer

1. What is a computer?

   • An electronic device which is capable of receiving information (data) in a particular form and of performing a sequence of operations in accordance with a predetermined but variable set of instructions (program) to produce a result in the form of information or signals.
     • Washing machines
     • Laptop
     • Printer
     • Tablet

2. Input/ Output Devise

   • An input device enables the user to input data into a computer
     • USB Stick
     • Mouse
     • Keyboard
   • An output device enables the user to receive information from a computer. Presenting the data to the user.
     • Projector
     • Printer
     • Speaker

3. Memory

   • This is where a computer keeps the data that has been input until it is processed. This memory is lost when the computer is off. The memory is used for the short term.

4. Storage devise

   • This is where a computer stores files that have been created, as well as software that has been installed, for the longer term.

5. Processor

   • The part of a computer that processes data according to the instructions it has been given. It provides the user with information.

6. CPU

   • The central processing unit (CPU) is sometimes described as the computer’s brain. It is an important part of the computer system and is usually consists of a single integrated circuit (chip).
   • Has to be told what to do with the data; usually this information comes from computer programs.