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A telegraph key, clacker, tapper or morse key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. [1] Keys are used in all forms of electrical telegraph systems, including landline (also called wire) telegraphy and radio (also called wireless) telegraphy .
The tap code, sometimes called the knock code, is a way to encode text messages on a letter-by-letter basis in a very simple way. The message is transmitted using a series of tap sounds, hence its name. [1] The tap code has been commonly used by prisoners to communicate with each other.
The term message exchange pattern has an extended meaning within the Simple Object Access protocol . [2] [3] SOAP MEP types include: In-Only: This is equivalent to one-way. A standard one-way messaging exchange where the consumer sends a message to the provider that provides do not send any type of response.
The event-driven messaging is a design pattern to enable the service consumers, which are interested in events that occur within the periphery of a service provider, to get notifications about these events as and when they occur without resorting to the traditional inefficient polling based mechanism.
Key pattern is the generic term for an interlocking geometric motif made from straight lines or bars that intersect to form rectilinear spiral shapes. [ 1 ] [ 2 ] [ 3 ] According to Allen and Anderson, the negative space between the lines or bars of a key pattern “resemb[es] the L- or T-shaped slots in an ordinary key to allow it to pass the ...
The software was later renamed to StatusNet in 2009, [10] before being merged into the GNU social project in 2013 along with Free Social, with the two latter servers being a fork of StatusNet. [11] [12] Over time, the limitations of the OpenMicroBlogging protocol became more apparent, being designed as a one-way text messaging system. [13]
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In early cell phones, or feature phones, the letters on the keys are used for text entry tasks such as text messaging, entering names in the phone book, and browsing the web. To compensate for the smaller number of keys, phones used multi-tap and later predictive text processing to speed up the process.