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Components of a computer presentation


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  • 1. Components of Computer
    • Harry Hayward
  • 2. The CPU
    • The CPU is the brain of the computer
    • CPU stands for Central Processing Unit
    • It tells all of the computer’s components what to do
    • It is attached to the motherboard via a ZIF (Zero Insertion Force) socket
    • Above it is the Heat Sink (Fan) which attached via thermal compound
  • 3. The CPU advanced
    • It can have multiple speeds
    • Nowadays the most popular speeds are 300Mhz and 550Mhz
    • There are different Core Types
    • These are:
      • Dual Core
      • Multiple Core
      • Single Core
  • 4. Memory
    • RAM stands for Random Access Memory
    • It allows you to multiple things at one time – the more RAM you have, the more things you will be able to do at one time.
    • They are placed in DIMM slots.
    • Flash Memory is a form of Memory that can be erased and reprogrammed in blocks (units of memory).
    • It is constantly powered
  • 5. Memory advanced
    • There are different types of RAM (such as DIMM, SODIMM, DRAM, and SDRAM). They each have different speeds. Below shows this.
    • DDR
      • DDR200 – 200MHz
      • DDR266 – 266MHz
      • DDR333 – 333MHz
      • DDR400 – 400MHz
      • DDR433 – 433MHz
      • DDR466 – 466MHz
      • DDR500 – 500MHz
      • DDR533 – 533MHz
    • DRAM – 25-40MHz
    • SDRAMM DIMM – 66-133MHz
    • ROM (Read Only Memory) cannot be edited, only
    • read.
    • EPROM is a form of ROM that can be erased and reprogrammed
    • Memory contained in ROM is kept even when the
    • computer is turned off
    • Dynamic RAM is the most common type of RAM
    • contains a transistor and a capacitor.
    • The capacitor holds the information (either a 0 or a 1)
    • However it has to be refreshed every few milliseconds
    • Static RAM does not need to be refreshed
    • This makes it faster, yet more expensive
  • 6. Hard Drive
    • A Hard drive stores all of your files on your computer
    • Most hard drives are internal, but you can get additional external ones to store more files
    • These files could include text, videos, images and software
    • Both types can be found at about £70
  • 7. Hard Drive Advanced
    • You can get different speeds of hard drive
    • The most common are 5400rpm and 7200rpm
    • There are several types of hard drive, these include PATA, SATA, SCSI and SSD.
    • Some SATA Hard Drive manufacturers make 10,000rpm hard drives
  • 8. Adapter Cards
    • There are different types of adapter card such as:
      • Graphics Card
      • Audio Card
      • NIC
      • Wireless NIC
      • TV Tuner Cards
    • PCI adapters connect computers to their peripherals
    • PCIe adapters also connect computers to their peripherals, however they were designed to replace PCI because it can connect updated versions of peripherals and generally more peripherals to the computer.
    • Sometimes Graphics Cards can be integrated onto the
    • motherboard. This is called an onboard graphics card.
  • 9. Adapter cards advanced
    • PCMCIA is an organization that specializes in developing and manufacturing PC Cards.
    • They have expanded their standards several times, which means that they are now compatible with many more devices.
    • A cardbus is the standard of PC card that PCMCIA currently develop.
    • It is 32-bit
  • 10. Storage Devices
    • You can get both internal and external storage devices
    • Internal Storage devices are inside the computer
    • External Storage devices are outside the computer
    • A Storage Device is a hardware device that can store data
    • They contain the PC’s permanent data
    • There are two types – Primary and Secondary
    • Primary storage devices include RAM
    • Secondary storage devices include Hard Drives
  • 11. Storage Devices advanced
    • There are several interfaces that are used with storage devices
    • SATA is an interface used to connect host bus adapters to storage devices
    • These storage devices can include Hard Drives and Optical Drives
    • PATA is an interface used to connect storage devices to the motherboard
    • SCSI is an interface used to connect the PC to any of its peripherals
    • A Solid State Drive (SSD) is a storage device with no moving parts
    • They make less noise than hard drives
    • They are becoming more popular than hard drives
  • 12. Different types of Hard Drive
    • PATA Hard drive:
      • Latest version’s cables have 80 wires
      • Older versions had 40 wires
      • 40-pin connector
    • SATA Hard drive:
      • Consume less power than PATA HDDs
      • Data interface is slower than PATA
    • SDD Hard drive:
      • No Moving Parts
      • Semiconductors move the disk
      • Less likely to break down
      • Processing Speed is Faster
    • SCSI Hard drive:
      • Spin faster than the other types of hard drive
      • More likely to break down than the other types of hard drive
  • 13. Input Devices
    • Touchscreen is a graphic that can be operated by touch rather than with a mouse of keypad.
    • A graphics tablet is similar to touchscreen
    • It can be operated using a stylus or pen
    • A games controller is an input device that can be plugged in to play games on the PC.
    • Can be connected via USB cables.
    • A microphone can be connected to the computer for recording purposes
    • Can be connected via USB cables or TRS connector (jack plug).
    • A keyboard can be plugged in to type emails, letters, reports etc
    • Can be connected via USB or PS2 cables.
  • 14. Output Devices
    • Printers can be used to print documents, images etc
    • They can be connected via USB, Parallel cables or Wireless
    • Monitors show the graphics of what you are doing on your computer
    • They can be connected via VGA cables
    • Speakers allow you to listen to things on your PC
    • They can be connected via USB or TRS connectors.
  • 15. Internal Components Hard Drive RAM Wireless NIC RAM slots Motherboard Optical Drive Heat Sink