Computer Connectors Flashcards
(19 cards)
The most widely used version, defining the physical layer for serial communication, including connector types and signal voltages
RS-232C
It typically uses a 25-pin D-sub connector (DB-25) or a 9-pin connector (DB-9).
RS-232C
is designed for serial communication, often referred to as a serial connection.
RS232
A later variant that specifies lower voltage levels, reducing power consumption and improving noise immunity.
RS-232D
This version includes refinements to signal levels but did not achieve the popularity of RS-232C or D.
RS-232E
uses unbalanced voltage signaling over longer distances, achieving higher noise immunity and supporting up to 10 receivers
RS-423
(also known as TIA/EIA-485) is a standard interface for physical communication, expanding on RS232. It employs balanced transmission and differential reception, suitable for multi-node systems.
RS-485
RS-485 Wiring Methods
Two-Wire System:
Four-Wire System:
Primarily used, it connects up to 32 nodes in a bus topology.
Two-Wire System:
Rarely used, it facilitates point-to-point communication.
Four-Wire System
RS-485 Signal Lines
uses two wires (A and B) for signal transmission
RS-232 Signal Lines
uses three wires, with one designated for ground and two for data signals.
essential for connecting various devices like printers and cameras.
USB
USB4 2.0
Expected to offer speeds up to 80 Gbps with improved support for external displays and data handling
Optical USB
Fiber optic-based cables could replace traditional copper, enabling faster data transfer rates.
Wireless USB
Future versions may eliminate physical connections entirely
Quantum USB
Could emerge as part of a quantum communication network, enabling secure data sharing.
AI-Driven USB:
Ports may feature AI capabilities to optimize connections automatically.
