A character which is input or output to cause some special action rather than to appear as part of the data.
Most control characters are input by holding down (either of) the “Control” key(s) on the keyboard and simultaneously pressing another key which may be a letter or (depending on the keyboard and operating system) certain punctuation characters. Some control codes usually have their own special keys: escape, tab, delete, backspace, return and can thus be entered with a single keypress.
Different operating systems and programs have different conventions for what effect typing certain control codes will have, such as interrupting the current process or suspending output.
Control codes may be output for their effect on the output device, e.g. moving the cursor or print head to the start of a new line.
See control-O, control-Q, control-S.
- Control column
noun 1. a lever or pillar, usually fitted with a handwheel, used to control the movements of an aircraft Also called control stick, joy stick
- Control commands
plural noun 1. keyed instructions conveyed to a computer by using the control key in conjunction with the standard keys
noun, Electronics. 1. an electrode to which a varying signal is applied to vary the output of a transistor or vacuum tube.
noun 1. an experiment in which the variables are controlled so that the effects of varying one factor at a time may be observed. noun 1. an experiment designed to check or correct the results of another experiment by removing the variable or variables operating in that other experiment. The comparison obtained is an indication […]