noun
ASCII data transfer with XON/XOFF flow control
A technical computing term referring to a serial communication method that uses XON/XOFF (software flow control) for ASCII data transfer, as opposed to hardware handshaking.
無手順通信では、XON/XOFFでデータの流れを制御する。
In non-protocol communication, data flow is controlled with XON/XOFF.
Compound of 無 (mu, 'without') and 手順 (tejun, 'procedure, protocol'), literally meaning 'no protocol'. The term is used in computing to describe a communication method that does not rely on a predefined handshaking protocol.