video summary Essay

Submitted By sgtstrong
Words: 548
Pages: 3
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1.07 Ports and Connectors
Serial Port
Male
9 or 25 pins
Transmit data 1 bit at a time
Parallel Port
Female
25 pins
Transmit data 8 bits at a time
Game Port
Female
15 pins (2 rows)
Video Port
Male
15 pins (3 rows)
USB replaced the serial, parallel, and game ports
Mouse (early)Keyboard (early)
Used serial connector 5 pin DIN
Modern mouse and keyboard uses either PS/2, USB, or wireless.
Network Interface Card NIC
Converts parallel communications to serial. NIC also use RJ-45 connectors to connect to the Internet
Modem
Connect to a phone line and the Internet. Uses 56Kbps. V.92 support faster speed.
Modem converts analog to digital; converts digital back to analog. Use RJ-11
Video output has 2 types VGA, DVI
VGA
Analog interface
D-type, 15 pin, 3 rows
DVI

Digital Visual Interface
Some may come with S Video
Round with 4 or 7 pins
Connect to TV
USB
Universal Serial Bus
Hot Swappable
USB1
12 Mbps
3 meters
USB2
480 Mbps40x faster
5 meters
A connector (larger)
B connector (smaller)
127 simultaneous device max
SCSI
Narrow SCSI
50 pin
Type A
Wide SCSI
68 pin
Type P
IEEE 1394
Aka Firewire

Serial

Fast
Hot Swapple
Used for streaming media
Expected to replace the SCSI
Multimedia
Microphone -Pink
Earphones- Green/Blue

Speaker- Green/Blue

1.09 Monitor
CRT Monitor- big and bulky
LCD Monitor- thin, sleek, and cool looking
CRT

Cathode Ray Tube; Similar to television screen
LCD
Liquid Crystal Display
Use TFT (Thin Fit Transistor)
Also referred to as Active Matrix
Backlighting through polarized panels
Specification
Screen size
Diagonal dimension of screen contrast ratio
Ratio of purest white to the purest black
Bigger is better
1000:1>600:1>400:1
Refresh rate-CRT
Times per second CRT beams writes to screen
Higher number better
Response time- LCD
Time needed to create new screen
Lower number better
Interlacing –CRT
Beam writes to alternating line
Compensates for slower refresh rates
Dot pitch-CRT
Distance between phosphorescent dots
Pixel pitch-LCD
Addressable pixel on screen
Same as resolution
Resolution-both CRT/LCD
Addressable point on screen
Standard resolution
640 X
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