mind map on pages 7-11

mind map on pages 7-11

1. components

   • network interface card
     • This device is often just called a network card or NIC; these provide the electronic circuitry for computer to communicate on a network.
   • router
     • These devices connect different networks and can be used to control where the data is sent. They are often found in homes and used for connecting to the internet.
   • hub
     • This device connects different networks sections.
   • USB flash memory disk
     • this is used to connect a computer with another device such as a flash memory device.

2. processing data

   • the processing in computer systems is carried out by the central processing unit or CPU for short.
   • the CPU is a collection of electronic circuits that carry out, or execute the instructions.
   • the instructions can be carried out either in a program or by the user and which makes decisions using the instructions.

3. key words

   • network
     • when computers are connected together so they can share data and devices such as printers, they are said to be in a computer network
   • interface
     • This is where data is transferred between computer devices or between people computers
   • USB interface
     • The universal serial bus interface was designed for use on personal computers to connect peripheral devices such as printer, keyboards and flash drives. It is now commonly used to connect other devices such s cameras. USB connections are also now found on many other devices such as PDAs, mobile phones and can also be used to change batteries.
   • peripheral device
     • Any devices that is not part of the computer but is attached to the computer is called a peripheral device. Peripheral devices are seen as expanding the system and include scanners and printers
   • input
     • Entering data into a computer system
   • proceessing
     • data is converted from one form to another. This is done by following a set of instructions and commands
   • output
     • When the results of processing are shown
   • storage
     • Data is kept or recorded while waiting to be used for later use

4. type of input devices and their uses

   • joystick/game controller
     • moving on the screen objects in a computer game
   • keyboard
     • entering characteristics when typing a letter
   • mouse
     • choosing options from an on-screen menu and selecting icons

5. hardware

   • input
     • processing
       • main or internal memory
         • backing storage
       • output