Computer Hardware

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COMPUTER HARDWARE

• A PRESENTATION BY
• VIRAT
• SINGH
• 7-C

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FLASH DRIVE

• IT IS A SMALL, LIGHTWEIGHT, REMOVABLE AND
  REWRITABLE FLASH MEMORY DATA STORAGE DEVICE. USB
  FLASH DISK IS FASTER, HOLDS MORE DATA AND MORE
  RELIABLE THAN A FLOPPY DISK. IT IS ALSO KNOWN AS
  PEN DRIVE, THUMB DRIVE OR SIMPLY USB DRIVE.

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DVD

• DVD STANDS FOR DIGITAL VERSATILE DISK OR DIGITAL
  VIDEO DISK. ITS AN OPTICAL DEVICE THAT CAN BE
  USED FOR DATA STORAGE AND RECORD MOVIES WITH
  HIGH VIDEO AND SOUND QUALITY. THE STORAGE
  CAPACITY OF A DVD VARIES FROM 4.1 GB TO 17 GB.

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• COMPACT DISK
• A Compact Disc (also known as a CD) is
  an optical disc used to store digital data. It
  was originally developed to store sound
  recordings exclusively, but later it also allowed
  the preservation of other types of data. Audio
  CDs have been commercially available since
  October 1982. In 2010, they remain the standard
  physical storage medium for audio.

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HARD DISK DRIVE

• IT IS AN ELECTRONIC DEVICE THAT CAN READ OR
  WRITE INFORMATION ON ITS METAL OR GLASS RECORDING
  SURFACE. THESE DISK DRIVES ARE VERY FAST AND HAVE
  LARGE STORAGE CAPACITY.

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FLOPPY DISK

• IT IS ALSO CALLED AUXILIARY MEMORY WHERE DATA CAN
  BE STORED PERMANENTLY FOR FUTURE USE. THE TYPES
  OF EXTERNAL MEMORIES ARE FLOPPY DISK, HARD DISK,
  COMPACT DISK, FLASH DRIVE ETC.

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RAM

• RAM RANDOM ACCESS MEMORY IS AN IMPORTANT
  COMPONENT OF MEMORY UNIT. WHATEVER INFORMATION WE
  ENTER INTO THE COMPUTER THAT EXISTS IN RAM. IT
  REMAINS THERE TILL WE ARE WORKING IN AN
  APPLICATION OR COMPUTER GETS ITS POWER SUPPLY. IT
  IS A VOLATILE MEMORY. DATA AND INSTRUCTIONS ARE
  TEMPORARILY STORED IN THE RAM. DURING PROCESSING,
  IF THE COMPUTER IS SWITCHED OFF DATA IS LOST
  FOREVER.

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ROM

• ROM STANDS FOR READ ONLY MEMORY. IT IS SO CALLED,
  AS USER CAN ONLY READ FROM IT AND
• CANNOT WRITE INTO IT. THE PRIMARY USE OF ROM
  IS DURING THE BOOTING PROCEDURE, WHICH IS AN
  INITIAL PROGRAM TO START UP THE COMPUTER, WHEN
  POWER IS SWITCHED ON.

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KEYBOARD

• As the name implies, a keyboard is basically a
  board of keys. The keyboard's design comes from
  the original typewriter keyboards, which arranged
  letters and numbers in a way that prevented the
  type-bars from getting jammed when typing
  quickly. This keyboard layout is known as the 
  QWERTY design, which gets its name from the first
  six letters across in the upper-left-hand corner
  of the keyboard.

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SPEAKERS

• Speakers are one of the most common output
  devices used with computer systems. Some speakers
  are designed to work specifically with computers,
  while others can be hooked up to any type of
  sound system. Regardless of their design, the
  purpose of speakers is to produce audio output
  that can be heard by the listener.

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MOUSE

• In computing , a mouse is a pointing device that
  functions by detecting two-dimensional motion
  relative to its supporting surface. Physically, a
  mouse consists of an object held under one of the
  user's hands, with one or more buttons. (Although
  traditionally a button is typically round or
  square, modern mice have spring-loaded regions of
  their top surface that operate switches when
  pressed down lightly.) It sometimes features
  other elements, such as "wheels", which allow the
  user to perform various system-dependent
  operations, or extra buttons or features that can
  add more control or dimensional input. The
  mouse's motion typically translates into the
  motion of a cursor on a display, which allows for
  fine control of a graphical user interface.

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MONITOR

• The computer monitor is an output device that is
  part of your computer's display system. A cable
  connects the monitor to a video adapter (video
  card) that is installed in an expansion slot on
  your computers motherboard. This system converts
  signals into text and pictures and displays them
  on a TV-like screen (the monitor).

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MOTHERBOARD

• The motherboard is the main circuit board of your
  computer and is also known as the mainboard or
  logic board. If you ever open your computer, the
  biggest piece of silicon you see is the
  motherboard. Attached to the motherboard, you'll
  find the CPU, ROM, memory RAM expansion
  slots, PCI slots, and USB ports. It also includes
  controllers for devices like the hard drive, DVD
  drive, keyboard, and mouse. Basically, the
  motherboard is what makes everything in your
  computer work together.

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