Computer Hardware ports

1. Computer
Hardware
Computer Ports
1

2. 2
Hardware
•System Unit
•Peripheral Devices
System Unit
Peripheral Devices

3. 3
The Front Panel
 Drive Bays
 Memory card
reader
 Floppy Drive
 Productivity
Ports
 Power Button
– Reset, standby
– Warm/cold boot

4. 4
The Back
 Ports for peripheral
devices
 Types of ports:
– Serial
– Parallel
– VGA
– USB, firewire
– Connectivity
(modem, network)

5. 5
Inside the System Unit
• Essential
electronic
components used
to process data
• Types of
components:
– Power supply
– Hard disk drive
– Motherboard
– CPU
– Expansion cards

6. 6
The Motherboard
CPU
RAM
Expansion
Cards
Chip Set
Built-in
components

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Expansion Cards
• Adds functions
• Provides new connections for peripheral
devices
• Common types:
– Sound
– Modem
– Video (VGA)
– Network (NIC)

8. 10
Hard Disk Drive
 Stores data and program
instructions
 Permanent (nonvolatile)
storage
 Storage capacities up to
250 GB and higher
 Transfers data in
milliseconds

9. 11
Evaluating Ports
Ports are used to connect peripheral
devices to the computer
Things to consider:
Devices you want to use
Ports needed for the devices

10. 12
PS/2 Port
COM 1 Port
PS/2
Connectors
Serial
Connector
Types of Ports
• Serial Port
– Transfers data one
bit at a time;
56Kbps

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Types of Ports
• Parallel
– Transfers eight
bits of data
simultaneously;
12Mbps
LPT 1 Port
Printer Cable Connector

12. 14
Types of Ports
• Universal serial bus
–Transfer speed up
to 480Mbps; Hot
swapping USB
Port
USB
Connector

13. 15
Types of Ports
• FireWire
–Transfer rate of
400 Mbps; Digital
cameras
FireWire
Port
FireWire
Connector

14. 16
Types of Ports
• Ethernet
–Transfer rate of 100
Mbps; connects
computers to
networks
Ethernet
Port
Ethernet
jack

15. 17
Types of Ports
• IrDA
– Transfer rate of 4
Mbps; Uses
infrared light waves
IrDA

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Types of Ports
• Bluetooth
– Transfer rate of 1
Mbps; radio waves
send data over
short distances
Bluetooth

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Types of Ports
• MIDI Port
– Musical Instrument Digital Interface
– 31.5 Kbps transfer rate

18. 20
Adding Ports
• Expansion cards:
– New port standards
• Expansion hubs:
– Enables several
devices to be
connected to a port

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