Input - Process - Output

Input - Process - Output

1. Input Devices

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   • keyboard
     • Used to enter characters and functions into the computer system. A panel of keys that operates a computer.
   • Scanner
     • It reads the image and converts it into a digital signal.
   • Graphics Tablet
     • A flat pad which the user draws with a special pen. The image is created on the screen.
   • Sensor
     • Collect data continuously. The control program decides what to do next based on the data.
   • Mouse
     • Manipulate objects on a computer screen. Controls the cursor.

2. Output Devices

   • Earphones
     • A device for listening to audio signals such as music or speech.
   • monitor
     • Displays the text and images.
   • Printer
     • A machine for printing text or pictures.
   • Speaker
     • Converts analogue audio signals into the equivalent air vibrations in order to make audible sound.

3. Process

   • CPU
     • Part of the computer system that is commonly referred to as the "brains" of a computer. Executes a sequence of stored instructions called a program.
   • Operating System
     • the low-level software that supports a computer's basic functions, such as scheduling tasks and controlling peripherals.
   • a series of actions or steps taken in order to achieve a particular end.

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