Control of computer system or subsystem operation by an operator who many intervene at arbitrary times is?
Control of computer system or subsystem operation by an operator who many intervene at arbitrary times is Manual control
The key characteristic of control is to interfere, to influence or to modify the process. This control function or the interference to the process is introduced by an organization of parts (including operators in manual control) that, when connected together is called the Control System.
Manual Controls are controls that are manually performed by individuals. They may be solely manual where no IT generated reports are used or they may be IT Dependent whereby an employee is using a system generated report to test the validity of a particular control.
A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large Industrial control systems which are used for controlling processes or machines.