Assignment:
Some computers need to have large numbers of RS-232 lines (e.g. servers or Internet providers). For this reason, plug-in cards with multiple RS-232 lines exist. Suppose that such a card contains a processor that must sample each incoming line at 8 times the baud rate to see if the incoming bit is a 0 or a 1. Also suppose that such a sample takes 1 usec. For 28,800-bps lines operating at 3200 baud, how many lines can the processor support? Note: The baud rate of a line is the number of signal changes per second. A 3200-baud line can support 28,800 bps if each signalling interval encodes 9 bits using various amplitudes, frequencies and phases. 56K modems do not use RS-232, so are not a suitable example of RS-232 timing.
Number of lines required = 28,800*3200*10^-6 lines
Provide complete and step by step solution for the question and show calculations and use formulas.