 | 4*4 Keypad Serial Outputs - Automatic key repeat after delay.
* Contact debouncing.
* Key beep provides tactile feedback to operator.
* Electrically quiet (Reduced EMI) keypad scanning.
* Data valid signal prior to transmission. (Interrupt act)
* 2400/9600 serial Baud rates selectable.
* Interfaces to any micro or direct to serial port.
* Both 5V TTL level and true RS232 level transmission.
* This unit reduces I/O requirments from 8 to 1.
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