U3 A1 Video Summary 1
1.07 Hardware, Ports and Connectors
Serial, parallel ports, game ports- all replaced by USB
Mouse and keyboard- PS/2 > USB/Wireless
NIC- Network Interface Card- connects computer to network/internet with RJ-45
Modem- converts analog > digital, digital >analog with RJ-11
Video- VGA, DVA, S-video
USB- Universal Serial Bus, plug and play and replacing serial/port connectors
SCSI- Narrow, 50-pin type-A and Wide, 68-pin type-P
IEEE 1394- firewall, fast, plug and play used for streaming media
Multimedia- microphone, speakers and earphones
1.07 Summary- for the A+ exam, which I will be taking, all this is very useful information to absorb into my brain. Knowing that you can plug 127 USB devices simultaneously was something I was not aware of. For many of these ports, USB is rapidly replacing these old technology connections.
1.09 Video- CRT (Cathode Ray Tube) and LCD (Liquid Crystal Display)
Specifications- screen size, contrast ratio, refresh rate for CRT, response time for LCD, interlacing, dot pitch, pixel pitch and resolution
CRT Resolution- 640x480, 800x600, 1024x768, higher is better
LCD Resolution- fixed resolution, XGA 1024x768, SXGA 1280x1024, UXGA 1600x1200, WUXGA 1920x1200
How to configure display settings- right click on desk top> properties> settings
Connectors- analog, digital and S-video
Video buses- AGP or PCI, PCI twice as fast as AGP
Video Cards- buy reputable brand, check bus type and speed and check video RAM
1.09 Summary- a lot of information that I was not aware about for the A+ exam. I’m also happy about the warning not to ever open a CRT monitor as it could possibly kill you. Of course, LCD is dominating the market and CRT is becoming a thing of the past. For best picture quality, I would definitely go with a LCD.
1.11 Printers Hardware and Configuration
Printers- Dot Matrix, Inkjet and Laser.
Dot Matrix, impact printer uses clusters of pins to strike an inked ribbon.
Inkjet, uses heat to force ink through nozzle, Thermal/Piezoelectric.
Serial, parallel ports, game ports- all replaced by USB
Mouse and keyboard- PS/2 > USB/Wireless
NIC- Network Interface Card- connects computer to network/internet with RJ-45
Modem- converts analog > digital, digital >analog with RJ-11
Video- VGA, DVA, S-video
USB- Universal Serial Bus, plug and play and replacing serial/port connectors
SCSI- Narrow, 50-pin type-A and Wide, 68-pin type-P
IEEE 1394- firewall, fast, plug and play used for streaming media
Multimedia- microphone, speakers and earphones
1.07 Summary- for the A+ exam, which I will be taking, all this is very useful information to absorb into my brain. Knowing that you can plug 127 USB devices simultaneously was something I was not aware of. For many of these ports, USB is rapidly replacing these old technology connections.
1.09 Video- CRT (Cathode Ray Tube) and LCD (Liquid Crystal Display)
Specifications- screen size, contrast ratio, refresh rate for CRT, response time for LCD, interlacing, dot pitch, pixel pitch and resolution
CRT Resolution- 640x480, 800x600, 1024x768, higher is better
LCD Resolution- fixed resolution, XGA 1024x768, SXGA 1280x1024, UXGA 1600x1200, WUXGA 1920x1200
How to configure display settings- right click on desk top> properties> settings
Connectors- analog, digital and S-video
Video buses- AGP or PCI, PCI twice as fast as AGP
Video Cards- buy reputable brand, check bus type and speed and check video RAM
1.09 Summary- a lot of information that I was not aware about for the A+ exam. I’m also happy about the warning not to ever open a CRT monitor as it could possibly kill you. Of course, LCD is dominating the market and CRT is becoming a thing of the past. For best picture quality, I would definitely go with a LCD.
1.11 Printers Hardware and Configuration
Printers- Dot Matrix, Inkjet and Laser.
Dot Matrix, impact printer uses clusters of pins to strike an inked ribbon.
Inkjet, uses heat to force ink through nozzle, Thermal/Piezoelectric.