Hello everyone,
Suppose you were tasked to design a project about car parking counter in a shopping mall with description:
I assume using MCUs as controller, but i couldn't figure out how to handle 100 I/O. There must be a digital technique that can be implemented to deal with many I/O. A bit research and i found articles mentioning multiplexer, 8255, shift registers. My humble question, which do you think work best? with consideration the number of I/O could still grow up to 1000.
Suppose you were tasked to design a project about car parking counter in a shopping mall with description:
- The parking slots are hundreds (say 100 for simplicity)
- They want to put a light above each parking slot to indicate vacant spot (100 output)
- The system has to count how many vacant and occupied slot (100 input)
I assume using MCUs as controller, but i couldn't figure out how to handle 100 I/O. There must be a digital technique that can be implemented to deal with many I/O. A bit research and i found articles mentioning multiplexer, 8255, shift registers. My humble question, which do you think work best? with consideration the number of I/O could still grow up to 1000.