Question: a. If a crossbar matrix has n input lines and m output lines, how many crosspoints are required? b. How many crosspoints would be required

a. If a crossbar matrix has n input lines and m output lines, how many crosspoints are required?

b. How many crosspoints would be required if there were no distinction between input and output lines (i.e., if any line could be interconnected to any other line serviced by the crossbar)?

c. Show the minimum configuration.

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