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The Mechanics Of Computers The Operating System (OS) & Hardware Role Of The Operating System (OS) During start up (booting up) Diagnose internal circuits. Send signals to the screen and internal sound card. Search for any attached peripherals.

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the mechanics of computers

The Mechanics Of Computers

The Operating System (OS) & Hardware

role of the operating system os
Role Of The Operating System (OS)
  • During start up (booting up)
    • Diagnose internal circuits.
    • Send signals to the screen and internal sound card.
    • Search for any attached peripherals.
    • Load common routines for controlling the computer.

Role Of The OS, Cont.

  • During Operation
    • Translates keystrokes, including mouse functions, for the internal hardware.
    • Performs those common routines such as saving, printing, etc.
    • Manages your desktop to allow multiple applications to run simultaneously and communicate to each other.
    • Allows interaction and communication with external devices over networks, through expansion cards, serial and/or parallel buses, etc.
the look of the os
The Look Of The OS
  • Graphical User Interface (GUI)
    • The single reason, in my opinion, for the proliferation of the use of computers in music.
    • It components:
      • Mouse gestures
      • Icons
      • Windows
      • Menus
      • Buttons
files folders and volumes
Files, Folders, and Volumes
  • Files - the smallest unit of organization (data structure) for which there is an icon representation of which there are three types:
    • Applications - referred to as programs
    • Data files - created by the application
    • Resource files - special files that add functionality to applications
  • Folders or Directories - storage bins used to organized files on the computer
  • Volumes - hard drives, floppy diskettes, CD-ROMs and other physical mediums where all files and folders are stored.
the four stages to computer operations ipos
The Four Stages To Computer Operations (IPOS)
  • Input Stage - represents those devices we use to get information into the computer, e.g., keyboard, mouse, or MIDI keyboard.
  • Process Stage - where the central processing unit (CPU), memory (RAM and ROM), and timing clock stores the information received.
  • Output Stage - where the computer represents those devices used to get the information, e.g., video displays, printers, speakers, etc.
  • Storage Stage - where devices like floppy diskettes, hard disks, and CD-ROMs saves your data.
the main parts of a computer
The Main Parts Of A Computer
  • Central Processing Unit (CPU) - an electronic circuit referred to as the microprocessor integrated circuit (chip) that serves as the brain of the computer and coordinates the flow of data in and out of the computer.
  • Motherboard - the main flat plastic board on which the CPU chip and other electronic circuitry is located, including chips for memory, video, and sound.
  • Memory (RAM and ROM)
    • Random-Access Memory (RAM) - Memory that is written to by normal computer use and stored temporarily. Also referred to as read-and-write memory.
    • Read-Only Memory (ROM) - Memory that stores permanent instructions and programs by the manufacturer (called firmware) to prevent the possibility of it being erased.
the main parts of a computer cont
The Main Parts Of A Computer, cont.
  • System Clock - a precision quartz clock that determine speed and rate (clock speed) at which instructions are processed, measured in megahertz (MHz) and gigahertz (GHz).
  • Interfaces -
    • Internal parallel bus which allows the CPU, motherboard, memory, and clock to connect and communicate.
    • External bus (daughter boards) - allows external devices to communicate with the motherboard of which some common types are:
      • NuBus (although these have been mostly phased out)
      • Peripheral Component Interconnect (PCI bus)
      • Personal Computer Memory Card International Association (PCMCIA) or PC Card, for short.
  • Keyboard, Mouse, Storage Disks, Network Connectors