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Sunday, 3 September 2017

PC HARDWARE SUPPORT SKILLS

              PC HARDWARE SUPPORT SKILLS

    Identification, installation and troubleshooting of processors
     Identification, installation and troubleshooting of Memory
    Identification, installation and troubleshooting of Motherboards
    Identification, installation and troubleshooting of SMPS
    Storage systems [ IDE and SATA ]
    Storage systems – removable [ CD/DVD/Blue Ray ]
    Display devices and graphics card
    Peripherals and input devices [


Saturday, 2 September 2017

Universal Serial Bus {USB}

The term USB stands for "Universal Serial Bus". USB cable assemblies are some of the most popular cable types available, used mostly to connect computers to peripheral devices such as cameras, camcorders, printers, scanners, and more.
   

HDMI (High-Definition Multimedia Interface




HDMI (High-Definition Multimedia Interface) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from a HDMI-compliant source device, such as a display controller, to a compatible computer monitor, video projector, digital television, or ...


Friday, 1 September 2017

Video Graphics Array (VGA)

Video Graphics Array (VGA) is the display hardware first introduced with the IBM PS/2 line of computers in 1987. Through widespread adoption, the term has also come to mean either an analog computer display standard, the 15-pin D-subminiature VGA connector, or the 640×480 resolution characteristic of the VGAhardware.

Thursday, 31 August 2017

Types of monitors DATA CABLE



DATA CABLE
Types of monitors:
1.CGA,XGA,EGA-    All are 9 pins connector(9 pin data cable).These monitors cannot support graphics.
2.VGA,SVGA,AGP-  all are 15 pin connectors (15 pin data cable).These monitors support graphics.
                                CGA-  color graphic adapter.
                                XGA-   extended graphic adaptor.
                                VGA-   video graphic adaptor
                                SVGA- super video graphic adaptor

IDENTIFICATION COMPONENTS IN MONITOR

                                                      MONITOR

IDENTIFICATION COMPONENTS IN MONITOR:

1.CRTor PT .(cathode ray tube or picture tube).
2.YOKE( horizontal deflection coil,VDC-vertical deflection coil)
3.Degaussing coil
4.Shield wire
5.Ring magnets
6.CRT Base or PT base.
           1. video amplifier.
           2. video driver.
           3. video output
7.Power connector.
8.Line filter.
9.Bridge rectifier.
10.SM Transformer.
11.Diodes
12.Capacitors
13.Resistors
15.IC's.
        1.Micro processor I.C
        2.Memory I.C
        3.Vertical I.C
16.Driver transformer
17.Relay
18.Coils
19.LOT(extra high tension,focus,screen)
20.Heat sync
21.Presets
22.Crystal
23.Fuse
24.PTC(positive thermal conductor)
25.Micro switch
26.LED

27.Iron core 

Wednesday, 30 August 2017

Definition, Advantages & Disadvantages. A floppy disk is a storage

Definition, Advantages & Disadvantages. A floppy disk is a storage medium that consists of a thin and flexible magnetic disk inside a plastic carrier. Widely used since the 1970s until the early 2000s, they have gradually been replaced by other storage devices 
                            
              

A USB Wi-Fi adapter

A USB  Wi-Fi adapter  eliminates the need to hardwire the computer to a router or other network device. ... The  adapter receives signa...

Computers