ICT Unit 1

ICT Unit 1

1. Computer Systems

   • Information systems
     • Input
       • Data inputted into a system
       • Barcode or Key Strokes
     • Output
       • The action that occurs after an input has been processed
       • Name and Price displayed on a monitor following a barcode scan
     • Processing
       • Turning the input into a useful form
       • Comparing barcode data with a database to analyse which item it corresponds to.
     • Storage
       • Information kept for later use
       • Stock levels after an item has been scanned
   • Hardware
     • Types of Hardware
       • CPU
       • Microprocessors
     • Uses of Microprocessors
       • DVD Players
       • Washing Machines
       • Mobile Phones
       • Games Consoles
       • Office Equipment
       • Industrial Machines
   • Software
     • Motherboard and CPU
     • Main/internal memory
       • RAM
       • ROM

2. Input and Output Devices

   • Input Devices
     • Keyboards
     • Mouse
     • Microphone
     • Digital (Video) Cameras
     • Touch Screen
     • Magnetic Stripes
     • Sensors
     • Automatic data-capture devices
     • Barcode Readers
     • OMR (Optical Mark Recognition)
     • OCR (Optical Character Recognition
   • Output Devices
     • Monitor
     • Printers
     • Speakers
     • Digital Projector
     • Plotters

3. Storage Devices and Media

   • Units of Memory
     • Bit
     • Byte
     • Gigabyte
     • Terabyte
     • Kilobyte
     • Megabyte
   • Backups
     • Copies of data stored in case the original is stolen or becomes corrupt
   • Choosing Storage Devices
     • Hard Drives
     • Optical Drives
     • Flash Memory
     • Magnetic Cartridges
   • Specialist Storage Media
     • Virtual Memory
     • Online Storage
     • Storing and Sharing Photographs

4. Communication Networks and Entertainment

   • LAN
   • WAN
   • Communication Devices and Media
     • Telephones
       • Land Lines
       • Mobile Phones
     • Email and Fax
   • Network Devices
     • Modem
       • Electronic device used to connect computers via telephone line
     • Digital Signals
       • Signals that take on only 2 values, off or on, in binary code
     • Analog Signals
       • Electrical signals that vary continuosly
     • Bandwidth
       • The rate at which data can be transferred
     • Dongle
       • A small piece of hardware that connects to a computer's USB port
     • SIM
       • Subscriber Identity Module
   • Entertainment Systems
     • TV and Radio
     • Home Entertainment
     • Music and Flim Downloads