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Computer Systems - Input, Process, Output
- 1. Computer Systems INPUT PROCESS OUTPUT
- 2. What is acomputer system? • A computer system is a mix of electronic hardware and software. • It accepts data as input and processes it to provide us with an output, such as information or a physical action. • But it can only follow the instructions that we give it.
- 3. Computer systems inthe home
- 4. Computer systems outand about
- 5. Input, Process andOutput • A computer system is made up of three main parts. INPUT PROCESS OUTPUT DATA INFORMATION
- 6. Input Push the ‘capture’button to take a photograph. Process Light is captured through the camera lenses and transformed to create a digital image. Output The digital image is shown on the monitor screen.
- 7. INPUT • A computersystem accepts data and instructions at the input stage. • Input devices, such as a keyboard or sensor, are used to collect and provide the computer system with data or instructions. Motion sensor
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- 9. Data • Data isa collection of facts about something or somebody. • It could be a collection of numbers, letters, dates, images and sound. • For example, your height, age, shoe size, hair colour and gender etc is data. • This data can be used in many different ways to provide information about you.
- 10. PROCESS • Data andinstructions are processed by a central processing unit (CPU). • A CPU is the computer system’s brain that can transform data from input devices into useful information or a physical action. • The CPU can process data really fast but it can’t think for itself. It only does what it is told to do by following instructions.
- 11. Computer processing INPUT PROCESS
- 12. Information • Databecomes information when it is put into context (i.e. given meaning). • A barcode number is just data on its own. So is the product name, image and price. • But this data becomes meaningful information when the data is put together. • When a barcode is scanned, we can find out what item it is, what it looks like and how much it will cost.
- 13. OUTPUT • An outputis when the computer communicates the results of the processed data. • The data has been transformed into useful information that we can see and use. • This information is usually shown on a display monitor or paper printout and it should be easy for us to understand.
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- 15. Computer systems arejust… INPUT PROCESS OUTPUT
- 16. Raspberry Pi Computer TV only Speakers Keyboard / Mouse CPU Printer Network Cable TV / Memory / Monitor Storage
- 17. Computer Systems Created by C Corbett