computer practicals
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Practical - 02System Unit Rare Panel
Ports and Connectors
System Unit Rare Panel
System Unit Rare Panel
Ports
• A computer port is a connection point or interface between a computer and an external or internal device. Internal ports may connect such devices as hard drives and CD ROM or DVD drives; external ports may connect modems, printers, mice and other devices.
• A port serves as an interface between the computer and other computers or peripheral devices. Physically, a port is a specialized outlet on a piece of equipment to which a plug or cable connects. Electronically, the several conductors making up the outlet provide a signal transfer between devices.
DIN5 – Port and Connector
DIN5 – Port and Connector
• It contains 5 holes/pins.• DIN stands for Deutsches Institut für
Normung.• It is commonly known as a PC/AT connection.• It is utilized for serial data transfer between
computers and peripherals such as PC keyboards, MIDI keyboards, and electronic instruments.
DIN5 – Port and Connector
PS/2 – Port and Connector
PS/2 – Port and Connector
PS/2 – Port and Connector
• Introduced by IBM in 1987.
• Stands for Personal System/2.
• Used to connect Keyboard and Mouse.
• Also called Mini-Din-6.
PS/2 – Port and Connector
Purple Keyboard
Green Mouse
PS/2 – Port and Connector
Serial – Port and Connector
Serial – Port and Connector
Serial – Port and Connector
• Sends the data serially bit by bit.• Also called DB9. • Also called COM ports (Communication).• Bi-Directional (Transmit and Receive).• Mostly used to connect serial mouse, modem,
GPS Receivers and Bar code scanners.
Parallel – Port and Connector
Parallel – Port and Connector
Parallel – Port and Connector
Pins (2 – 9) = Data (0 bit – 7 bit)
Parallel – Port and Connector
Parallel – Port and Connector
• Sends 8 bits at a time.• Also called DB25 or Centronics port. • Also called Printer Port or LPT (Line Printer
Terminal).• Mostly used to connect printers, scanners and
external drives.• A newer type of parallel port, which supports the
same connectors as the Centronics interface, is the EPP (Enhanced Parallel Port) or ECP (Extended Capabilities Port).
VGA – Port and Connector
VGA – Port and Connector
VGA – Port and Connector
• VGA stands for Video Graphics Array.
• Also called DE15 or DB15.
• Also called RGB Connector.
• Used to connect Monitor, TV and Projector.
VGA – Port and Connector
BLUE GREEN RED
VGA – Port and Connector
USB – Port and Connector
USB – Port and Connector
• USB stands for Universal Serial Bus.
• Used to connect many different types of devices to system unit.
• Is Plug and Play.
• Up to 127 devices can be connected.
• Used to connect Monitor, TV and Projector.
USB – Port and ConnectorVersions of USB
• USB 1.0 (Full Speed) • Released in the year 1996• Maximum transfer speed of 12 Mbits/s
• USB 2.0 (High Speed)• Released in the year 2000• Maximum transfer speed of 480 Mbits/s
• USB 3.0 (Super Speed)• Released in the year 2008• Maximum transfer speed of 5 Gbits/s
USB – Port and Connector
Types of USB Connectors and ports• USB A• USB B• USB Mini A• USB Mini B• USB Micro AB• USB Micro B
USB – Port and Connector
USB B
USB A
USB – Port and Connector
USB A
USB B
USB – Port and Connector
USB A
USB Micro B
USB – Port and Connector
USB Micro BUSB Mini B
USB A
USB – Port and Connector
USB Mini BUSB Mini A
USB – Port and Connector
USB AUSB Micro AB
USB – Port and Connector
USB – Port and Connector
USB – Port and Connector
Firewire – Port and Connector
Firewire – Port and Connector
Firewire – Port and Connector
• Also called IEEE1394 Interface.• Developed by Apple in 1990s.• It provides serial communication.• Plug and play.• Up to 63 devices can be attached.• Provides maximum transfer rate of 400
Mbps/s.
RJ-45 – Port and Connector
RJ-45 – Port and Connector
RJ-45 – Port and Connector
• Stands for Rigid Jack 45 or Registered Jack 45.
• Used to connect computer over Local Area Network (LAN)
RJ-11 – Port and Connector
RJ-11 – Port and Connector
• Stands for Rigid Jack 11 or Registered Jack 11.
• Also called Phone connector or Phone Jack.
• Used to connect computer over Internet using dial up phone line.
RJ-11 – Port and Connector
Audio – Port and Connector
Audio – Port and Connector
Audio – Port and Connector
3.5mm Stereo Jack
Mono Jack
Audio – Port and Connector
S/PDIF – Port and Connector
S/PDIF – Port and Connector
S/PDIF – Port and Connector
• Stands for Sony/Philips Digital Interconnect Format.
• Provides Audio interface.
DVI – Port and Connector
DVI – Port and Connector
DVI – Port and Connector
DVI – Port and Connector
• Stands for Digital Video Interface.
• Used to Connect Video Devices like Monitor and Projector.
HDMI – Port and Connector
HDMI – Port and Connector
HDMI – Port and Connector
HDMI – Port and Connector
• Stands for High-Definition Multimedia Interface.
• Audio and video interface.
S-Video – Port and Connector
S-Video – Port and Connector
S-Video – Port and Connector
• Stands for Separate Video.
• Contains 4 pins.
• Provides Video interface.
Label the Ports
Label the Ports
Label the Ports
PS/2 to USB Conversion
USB Pin Name
USB Pin Number
USB Wire Color
PS/2 Pin Number
PS/2 Pin Name
PS/2 Wire Color
VDC +5V 1 Red 4 VDC +5V Red
Data - 2 White 1 Data White
Data + 3 Green 5 Clock Brown
Ground 4 Black 3 Ground Black