Cables Flashcards
4 basic functions of a computer
- input
- process
- store
- output
DB9 connector
d shaped miniature pin in back of computer
- 115 kb per second
- slow connection
- communications port in router or switch
- serial cable
host controller
uses same amount of bandwidth for all devices on port
USB 1.0
- max speed of 1.5 MB/second
- slow compared to now
USB 1.1
- full speed USB
- 12 MB/s
USB 2.0
- 480 MB/s
- high speed
USB 3.0
- super speed USB
- 0.9 amps
- 3.1 = 5 GB/sec
- 3.2 = 10 GB/sec
- 2x2 = 20 GB/sec
USB 4.0
- 40 GB/sec
what is the drawback of longer cables?
higher chances of resistance and speed and signal deterioration
- shorter cables are better
Type A connector
- flat rectangular connector in one direction
- most desktops, some laptops
Type C connector
- USB 3 and beyond
- insert in either direction
- small oval
- more modern
Type B connector
- large devices like printers
- square shape port with rounded corners
Type B mini
trapezoid
- found in early phones/tablets
Type B micro
- shorter and skinnier than mini
- used in small devices
HDMI
- widely used interface
- HD standard = 1080P
- High resolution = 4k and 8k
HDCP
- allows a device to validate the connection
HDMI connector types
type A, type C, type D
Displayport
- same capabilities as HDMI
- uses a thunderbolt cable
- full size and mini
- high speed data transfer, up to 20 Gbps
- daisy chaining
DVI
- digital visual
- supports analog and digital outputs
- uses pins
DVI-A
analog signals only
DVI-D
digital signals only
DVI-I
analog and digital
thunderbolt
acts like a display interface with data transfer
- versions 1 and 2: physical connector compatible with DP
- has lightning bolt next to it
- version 3 and 4 (40 Gbps) uses same port connector as usb-c
Lightning cable
proprietary connector by apple
- fully reversible
