This term is used to express a specific value for some selection in a computer program. It is the significance used when a setting has not been particularly by the user. The standard could be altered to some person setting when the person needs another setting.
For example, the default font setting in Netscape Communicator is “Times.” If you don’t go to the Netscape preferences and change it to something else, the “Times” font will be used — by default.
A default, in computer science, refers to the preexisting value of a user-configurable setting that is assigned to a software application, computer program or device. Such settings are also called presets or factory presets, especially for electronic devices. The Oxford English Dictionary dates this usage to the mid-1960s, as a variant of the older meaning of “failure in performance”.
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The computer mouse as we know it today was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960’s and was patented on November 17, 1970