A personal identification number (PIN), or sometimes redundantly a PIN number, is a numeric or alphanumeric passcode used in the process of authenticating a user accessing a system.. The personal identification number has been the key to flourishing the private data exchange between different dataprocessing centers in computer networks for financial institutions, governments, and enterprises.There are also two variations of the sixpin, [citation needed] sevenpin (one where the outer pins form 300° or 360° and one where they form 270°), and eightpin (one where the outer pins form 270° and one where they form 262°) connectors. Of note, for eightpin connectors, DIN45326 defines the 8pin …
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