Computing Revision

Computing Revision

1. Cloud computing

   • Cloud Computing is where you can install pictures from your phone and your tablet and you can delete your photos from your tablet and phone so you can stay safe online.
     • Advantages
       • You can access everywere with internet.
     • Disadvantages
       • Hackers can hack your computer

2. Secondary storage

   • A secondary storage device refers to any non-volatile storage device that is internal or external to the computer.
     • Solid State
       • Solid State storage is found in phones, tablets and USB sticks.
         • Advantages
           • Is durable
           • Can go more faster
         • Disadvantages
           • Is so expensive
     • Magnetic
       • Magnetic storage is the Hard disk inside of your PC or laptop is probably magnetic.
         • Disadvatages
           • Less durable and can break easily.
         • Advatages
           • Higher capacity
           • Cost-efficient
     • Optical
       • Optical storage uses a laser to read and write to CDs, DVDs and Blu-rays.
         • Advantages
           • Portable
           • Cheap
           • Can be used in variety of devices
         • Disadvantages
           • Low capacity
           • Can be easily scratched

3. Secure Password

   • A strong password must be a mixture of symbols, letters and numbers at least 8 characters.
     • 67!!Ñp0r

4. File Management

   • A file manager or file browser is a computer program that provides a user interface to manage files and folders.
     • Examples
       • File Explorer
       • Finder

5. Input and output devices

   • Input
     • Input is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance.
       • Examples
         • Scanner
         • Webcam
         • Controler
   • Output
     • An output device is any piece of computer hardware equipment which converts the electronically generated information into human-readable form.
       • Examples
         • Headphones
         • Printer
         • Projector

6. Embedded system

   • An embedded system is a controller programmed and controlled by a real-time operating system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.
   • Examples
     • Mobile phones
     • Gaming controler
     • Microwave
     • Washing mashing