NCR 7452, User Manual

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1-22 Chapter 1: Product Overview
External Decoded Scanner Connector
A decoded RS-232 input device that only requires TXD, RXD, CTS and
RTS, such as a bar-code scanner, can be connected to the keyboard.
RS-232 signals are routed to the Wedge controller and passed into the
system keyboard data stream. The connector pr5V to power
the scanner.
Special PC Setup Keypad Layout for POS Keyboard
On power-up, the operator can switch the POS keyboard into an
alternate keypad layout that can be used with many PC BIOS setup
and configuration routines. The alternate layout contains keys such as
ESC, TAB, END, "+", "-" and arrow keys, which are not available in the
normal keypad layout.