noun, noun which may take the genitive case particle 'no'
simplex; unidirectional
Computing term for one-way communication or transmission, as opposed to duplex or bidirectional. Used as a noun or with の to modify another noun.
単方向通信では、データは一方向にしか流れない。
In simplex communication, data flows in only one direction.
このプロトコルは単方向の伝送に適している。
This protocol is suitable for unidirectional transmission.
半二重 (half-duplex) allows two-way communication but not simultaneously, while 単方向 is strictly one-way.
Compound of 単 (single) and 方向 (direction), literally 'single direction'. A modern technical coinage, likely from English 'simplex' or 'unidirectional'.