G043 Lecture 02 Inside A Desktop PC

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G043 Lecture 02Inside A Desktop PC

• Mr C Johnston
• ICT Teacher
• www.computechedu.co.uk

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Session Objectives

• Know the components which make up a basic
  computer,
• Know the different types of port on a modern PC
  and what they are typically used for,
• Know the different types of cables used to
  assemble a PC.

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Back to Basics

• Computers operate in bits electric pulses of
  either 1s or 0s,
• How Binary Works Video
• Computer storage are measured in bytes which are
  groups of 8 bytes,
• As computer storage requirements so have the
  units
• KiloByte (KB) Digital 1000 Bytes/Binary 1024
  Bytes
• MegaByte (MB) Digital 1,000,000 Bytes/Binary
  1,048,576 Bytes
• GigaByte (GB) Digital 1,000,000,000
  Bytes/Binary 1,073,741,824 Bytes
• Computer processor speeds are measured in Hz
  (cycles per second)

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Basic Requirements
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Hardware Requirements

• Video To Show How A Computer Works
• System Case
• Power Supply
• Mother Board
• Processor
• HDD
• RAM
• Optical Disk Drive
• Input Devices
• Output Devices

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Types of Port

• Serial (9 / 25 pin male) mice other serial
  peripherals - obsolete
• Parallel (25 pin female) used for old printers
  - obsolete
• Games / MIDI Port (15 pin female) Joy sticks /
  MIDI devices - obsolete
• PS2 6pin mini DIN normally used for mouse and
  keyboard
• USB 1/1.1 (12 mbps) original USB port ok for
  mice and keyboards but little slow for today's
  devices
• USB 2 (480 mbps) - used by most devices today
  allows high speed data transfer more popular
  than FireWire
• IEEE 1394 FireWire (400mbps) very fast port
  used to transfer data typically for high quality
  video capture
• RJ-45 Socket (10/100/1000mbps) used for network
  cable connection
• RJ-11 Socket (56kbps) used for telephone cable
  connection
• HDMI (gbps) high definition multimedia
  interface transfers video and audio in a single
  cable in high definition

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Types of Cable

• IDE Cable (40pin female) used to connect HDD
  and Optical Drives to the motherboard
• SATA Cable - used to connect modern internal
  hard disk drives and optical drives to the
  motherboard
• Optical Drive Audio Cable Connects drive to
  sound card so sound can be heard from it,
• Serial cable used to connect devices to serial
  port
• Parallel cable used to connect devices to
  parallel port
• USB cable used to connect devices to USB port
  plug is always the same to connect into USB
  socket but different types fit into devices
• FireWire Cable used to connect devices to
  FireWire port
• Ethernet Cable used to connect computers to a
  network
• HDMI Cable used to connect HD video and audio
  equipment together

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Topic Exercise

• Download the topic exercise and complete it using
  the internet to assist you,
• Save it within a sensible place as it will be
  useful when completing the assignment.