Question: The microcontroller in Section 9.3 receives decimal numbers on its serial port. Each number consists of four digits encoded as ASCII characters. In order to

The microcontroller in Section 9.3 receives decimal numbers on its serial port. Each number consists of four digits encoded as ASCII characters. In order to distinguish between successive 4-digit numbers, a delimiter character H is used. Thus, if two suc- cessive numbers are 2143 and 6292, the received sequence will be H2143H6292. Each number is to be displayed on four 7-segment display units. Assume that each display unit has a BCD-to-7-segment decoder circuit associated with it, as shown in Figure P9.1. BCD to a b P BCD digit bD g 7-segment e decoder

Show the necessary connection to the microcontroller. Write a C-language program to perform the required task. Use polling to detect the arrival of each ASCII character.

BCD to a b P BCD digit bD g 7-segment e decoder f g d Figure P9.1 A 7-segment display with a BCD decoder. P

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