1. Exercise 1
1. Two signals are given in the following figures. Whose bandwidth is large? Why?
s(t)
s(t) t t
(a)
(b)
2. Draw the RS-232 waveform diagrams of ASCII letters of R ( ) and S ( ).
3. Give at least one example for each of the following transmission/communication modes:
parallel transmission, serial transmission, simplex transmission and duplex transmission.
4. Suppose one sent bit characters across an EIA-232 or RS-232 connection that
operated at 9600 bps. How long will the minimum transmission time be required?
(Hint: remember to add a start bit and a stop bit on each character.)