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in 1985. The most common application for these units is bank and credit card processing, however, as a general purpose computer, they can perform other novel functions. Other applications include gift/benefit card processing, prepaid phone cards, payroll and employee timekeeping, and even debit and
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ATM cards. They are programmed in a proprietary VeriFone TCL language (Terminal
Control Language), which is unrelated to the
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Card reader, two serial ports, optional bar code or PIN pad device
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