ICT Quick Revision

Slide 1

• ICT
• Revision

Different types of computers:

• Desktop
• Laptop
• Tablet
• Smart phone
• Gaming console
• Smart watches
• Smart TV

Input devices

• Input devices - hardware that sends data to a computer, allowing you to interact with and control it.
• Examples:
• Mouse, keyboard, microphone and sensors

Output devices

• Output devices - a peripheral that receives data from a computer
• Examples:
• Printer, monitor, earphones and projector

Storage devices

• A storage device is any hardware capable of holding information either temporarily (volatile) or permanently.
• Examples:
• Hard drives
• Floppy disk
• CD
• Blu-ray
• Memory card
• SSD

Magnetic media

• Advantages:
• Very fast access to data
• Data can be read from any part of the hard disc
• Very cheap
• Disadvantages:
• Data can be altered by magnetic fields and dust
• Movement can damage the surface of the disk which leads to data loss

Hardware

• Hardware - a physical component of a computer system that contains a circuit board.
• Examples:
• CPU, mouse, keyboard and RAM