2. Legacy Multifunction Ports
Serial/Parralel
Male /female
Pins/sockets respectively
Slight D shape
D-sub/D-subminiature connector/DB
D-subminiature
connectors referred to
as D-shell connectors
3. Legacy Multifunction Ports
Serial Ports
9pin / 25 pin variety
Max transmission 115kbps
Standard for ports in use is 9600bps
Serial port 1
Default i/o address : 3f8 / irq4(Com1)
Serial port 2
Default i/o addres: 2f8/ IRQ3(Com2)
Parallel Ports
25-pin
Female
Printers use centronics ports
Varieties: (1) 36 pin IEEE 1284B (2) mini ieee1284c
connector
i/o address 378 / irq7(lpt1)
Extended Capability port (ecp)/ enhanced
parallel port(epp)
Ten times faster than standard portsa
4. Standard Single- Function Ports
Keyboard port
6 pin mini din (ps/2 port)
Mouse port
Appears identical to keyboard port NOT interchangeable
Video Ports
VGA – Video Graphics array
Analog (modulated data freq. wave)
DVI – Digital Visual Interface
analog/digital (sends video through 01s)
DisplayPort
Pure digital
15 pin D-sub for
CRT/LCD/project
ors
5. Monitors and their connections
Lcd and projectors use DVI connector
Made of 3:
Dvi-dd – digital / 18 pins
Dvi-a – for analog (backwards comp. if desired)
Dvi-a/d or dvi-i(interchangeable) accepts dvi-d or a
Dvi-I and D support dual-link dvi
Uses 24pin connector
Supports higher resolution and similar connector (more pins)
6. Continuation
Display Port
Compact 10 pin connector
Smaller display port
Direct-drive display technology
Monitors do not need special scaling
Resolutions up to 120hz
Optionally capable of encryption and transmission of audio
7. Continuation
Audio ports
3.5 mm mini audio connectors
With high performance sounds cars
outputs incorp two connections called sony/phillips digital interface (s/pdif)
Flavors: electrical (2) optical
Electrical
Rca connector on coaxial cable
Optical port
Uses fiber connector
8. An Extension on Ports
Hdmi
High definition video signal
Multichannel digital audio streams
Purely digital
Midi/joystick ports
Female db -15 port for gaming controls
Pins in two arrays
Modem ports
Two0wire RJ-11 telephone cables
Network Interface Ports
NICS ( network interface cables)
Eight wire RJ-45 port
RJ-45
RJ-11
Know the
Difference
15 pin db connector can be
used for midi and joystick
Very old nics may
have bayonet-style
coax connectorS
called BNC .
10BASE2/THINNET
NETWORKING
9. Modern Multifuntion Ports
usb
Newer systems all have
SCSI- small computer system interface
Usb
Firewire (1394
Hot swappable
Can connect / disconnect at any time w/o
powering down pc
USB Standards
Name Standard Max speed Cable length
Low speed usb 1.1 1.5Mbps 3meters
Full speed Usb 1.1. 12mbps 3meters
Hi speed Usb 2.0 480mbps 5meters
superSpeed Usb 3.0 5gbps 3meters
10. continuation
Firewire
Otherwise known as IEEE 1394a
Transfer up to 400mbps
6 pin standard
Current generation b
Up to 800mbps
9 pin
Mini fire wire
4 pin
Can connect up to 63 FireWire devices in
daisy chain
SCSI
Variety of interfaces
Scsi -1
SCSI -2
ULTRA SCSI
WIDE ULTRA SCSI
FEMALE ULTRA 320 PORT
68 pins
50 pin / 25 pin on older devices
Varies from 5-80mbps (old) 32-mps for newer