TheUART(UniversalAsynchronousReceiver/Transmitter)coreprovidesserialcommunicationcapabilities,whichallowcommunicationwithmodemorotherexternaldevices,likeanothercomputerusingaserialcableandRS232protocol.ThiscoreisdesignedtobemaximallycompatiblewiththeindustrystandardNationalSemiconductor