Internal And External Component part 3 (Connector , CVT, UPS)

Communication Port
     A port (connector) which can be used of connect any devices to transmit data & instruction from PC to that devices.     
In another word a serial communication accustomed connect devices like your electronic equipment. sometimes selected as COM1, COM2, COM3, and COM4 on IBM compatible computers running Microsoft Windows
List of port
PS/2
Serial Port
DB-25
DE-9 or RS-232 or COM Port
Parallel Port or Centronics 36 Pin Port
Audio Ports
Surround Sound Connectors or 3.5 mm TRS Connector
S/PDIF / TOSLINK
Video Ports
VGA Port
Digital Video Interface (DVI)
Mini-DVI
Micro-DVI
Display Port
RCA Connector
Component Video
S-Video
HDMI
USB
USB Type A
USB Type C
RJ-45
RJ-11
e-SATA

Type of Communication Port 

Com(Serial)                Parallel(LPT)        USB
(1) PC ha generally two       (1)Only one (LPT)        (1) 4 or 6 USB1 , USB2      Com port com1 , com2
(2) Used for long distance    (2)Short Distance        (2) Medium distance       Transmission
(3) Slow data transfer           (3)fast & more data transfer (3)fast and more 
(4) Show we attracted slow (4) Fast devices          (4)Fast devices
      Devices with its.            
Port or Connector 
         Serial Port(COM)àD/9/M or D/25/M      
         COM1/3àD/9/M
         COM2/4
         COM1/3
         COM2/4àD/25/M
      Parallel Port(LPT1)àD/25/F
 
CVT
 CVT->Constant Voltage Transfer To condition the input power. IT works on magnetic saturation principle, reverberative with a circuit of high alphabetic character issue. once incoming Mains voltage is low the electrical condenser provides the mandatory further gain in power, keeping the output voltage steady.
          supply.
   It can following extra advantage:-
·       High voltage
·       Low voltage
·       Fluctuation
·       Spike
·       Overload
·       Short circuit
Rating:
                       500av (Walt)
Wattage
                            1kv
Block diagram
UPS
UPS->Uninterrupted Power Supply
 As latest operating system windows and Linux  extra proper shot down for off the PC .Suddenly power failure can damage continuous power supply(India electricity). We use UPS. PC has self battery backup it power fails.
Block diagram UPS
 
 
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