characterisic function
— Noun
– English
~ (electronics) graph showing how a particular characteristic of a device varies with other parameters
circular function
— Noun
– English
~ function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
control function
— Noun
– English
~ an operation that controls the recording or processing or transmission of interpretation of data; "a control operation started the data processing"