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A busybody caricatured by Isaac Taylor in the 19th century to illustrate the character sketch by Theophrastus. A busybody, meddler, nosey parker, or marplot is someone who meddles in the affairs of others. An early study of the type was made by the ancient Greek philosopher Theophrastus in his typology, Characters, "In the proffered services of ...
Busy work (also known as make-work and busywork) is an activity that is undertaken to pass time and stay busy but in and of itself has little or no actual value. Busy work occurs in business, military and other settings, in situations where people may be required to be present but may lack the opportunities, skills or need to do something more ...
A busy signal (or busy tone or engaged tone) in telephony is an audible call-progress tone or audible signal to the calling party that indicates failure to complete the requested connection of that particular telephone call . The busy signal has become less common in the past few decades due to the prevalence of call waiting and voicemail .
Call-progress tone. In telephony, call progress tones are audible tones that provide an indication of the status of a telephone call to the user. The tones are generated by a central office or a private branch exchange (PBX) to the calling party . Telecommunication equipment such as fax machines and modems are designed to recognize certain ...
An nth busy beaver, BB-n or simply "busy beaver" is a Turing machine that wins the n -state busy beaver game. That is, it attains the largest number of 1s among all other possible n -state competing Turing machines. The BB-2 Turing machine, for instance, achieves four 1s in six steps.
Busy waiting. In computer science and software engineering, busy-waiting, busy-looping or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as whether keyboard input or a lock is available. Spinning can also be used to generate an arbitrary time delay, a technique that was necessary on systems that ...
Like a dial tone or busy signal, the SIT is an in-band signal intended both to be heard by the caller, and to be detected by automated dialing equipment to determine a call has failed. In North America, the AT&T/Bellcore SIT standard allows the frequency and duration of the tones to vary slightly - making eight distinct messages specifically ...
Polling (computer science) Polling, or interrogation, refers to actively sampling the status of an external device by a client program as a synchronous activity. Polling is most often used in terms of input/output ( I/O ), and is also referred to as polled I/O or software-driven I/O. A good example of hardware implementation is a watchdog timer .