This sample demostrates UART communication. When the program is
executed, a string is transmitted through the serial interface, and
can be seen using a serial terminal program like Hyperterminal or
Minicom. The serial terminal program should be configured with the
following parameters: 9600 baudrate, 8 data bits, no parity, 1 stop
bit. Ensure that Switches 3 & 4 of USBIO Dip switch are off after
programming the Zkit-51 board. Then reset Zkit-51 to check the
execution.