(1) (PIN) (
Personal
Identification
Number) An numeric code from four to six digits that the user makes up. The PIN is a verification method to authenticate debit cards at a terminal, and it may also used as a second factor when logging onto a financial or other sensitive website. See
passcode and
password.
(2) The male lead on a chip, RAM module, expansion card or cable connector. Each pin plugs into its female counterpart to complete the circuit. The number of pins reflects the number of wires/pathways that carry signals. See
chip package,
memory module,
expansion card and
plugs and sockets.
(3) To place an object onto a start menu, taskbar, home screen or Web page. For example, in Windows, "Pin to Taskbar" places the application icon onto the taskbar. The Mac equivalent is "Keep in Dock." See
Pinterest and
Pinata.
(4) Keeping a single application on screen in a mobile device. See
screen pinning.