Please enable JavaScript.

Coggle requires JavaScript to display documents.

Computer System (Input Devices (3.Pointing Devices (Mouse (Pointing …

- - - - Pointing device
        that fits in a palm, and used to
        control the pointer by moving it along a flat
        surface.
    - - A stationary pointing device with a ball on its top
        or side.
    - - a small, flat, rectangular pointing device that is
        sensitive to pressure and
        motion.
  - - - A device that records video as digital signals,
        which can be transferred into a computer by
        connecting the video device to the computer.
    - - A type of digital camera attached to or built in a
        computer that enables user to capture video and
        still images and share them through the Internet.
  - - - Designed specifically for playing games on the computer
    - - Transmits data to the system unit using wireless technology, such as bluetooth, or infrared.
    - - Designed for comfort and to reduce the chance of wrist and hands injuries
- - - - Hold memory modules
    - - Hold adapter card slot
      - PCI Slot
        
        AGP Slot
    - - Holds a processor chip
  - - - RAM :
        Memory chips that holds data or programs that are currently being used by the processor
        • Can be read from and written to by the
        processor.
        • Volatile - loses its contents when the power is
        turned off.
        
        Types of RAM chips
        • DRAM (Dynamic RAM) -Chips must be re-energized constantly to keep their contents.
        • SRAM (Static RAM) -
        Do not have to be re-energized as often as DRAM chips, faster access time, more reliable but more expensive than DRAM.
        • MRAM (Magnetoresistive RAM) -Stores data using magnetic charges instead of electrical charges, greater storage capacity, consume less energy, faster access time, more expensive, and non-volatile.
      - ROM
        • Memory chips that stores permanent data or instructions needed by a computer or devices.
        • Can be read from, but cannot be written to by the processor.
        • Non volatile – does not lose its contents when the power is turned off.
        
        • PROM (Programmable ROM) - A blank ROM chip which a programmer can write
        permanently; once written, the contents cannot be erased or changed.
        •EPROM (Erasable Programmable
        ROM) - Allows the programmer to erase the contents by exposing to ultraviolet light.
        •EEPROM (Electrically Erasable Programmable
        ROM) - Allows The programmer to erase the
        contents with an electric signal.
  - - - Types of Storage Media
        • Magnetic Storage – Examples: Hard disk, Tape
        • Optical Disc – Examples: CD, DVD, BD
        • Flash Memory Storage – Examples: USB flash drive, Memory cards,SSD,ExpressCard modules
  - - - Types of Adapter Card
        • FireWire Card
        • Modem Card
        • Network Card
        • Sound Card
        • USB Card
        • Video Card
        • MIDI Card
        • TV Tuner Card
        • PC-to-TV converter Card
- - - - Ink-Jet printer
        
        Laser printer
        
        Thermal printer
        
        Plotter
    - - Dot-matrix printer
        
        Line printer
- - - - • Operating System – A set of programs that coordinates all the activities among computer hardware devices.
        • Utility Program – A program that performs a specific task related to the management of computer functions and
        resources.
        
        Types of Operating System
        • Stand-alone OS
        • Server OS
        • Mobile OS
  - - - Types of Application Software
        • Word Processing Software
        • Spreadsheet Software
        • Presentation Software
        • Database Software
        • Web Browser
- - - - A computer uses hardware and software
        to process data into information.
        – Hardware is the electric, electronic, and
        mechanical equipment that makes up a computer.
        – Software is a series of instructions that tells
        hardware how to perform tasks.