Digital Circuits & Design, 1st Education by Pearson

1.18 | Chapter 1

When bits are transferred in serial form from one point to another, they are sent one

bit at a time along a single line, as illustrated in Figure 1.18 for the case of a computer-

to-modem transfer. During the time interval from t

0

to t

1

, the second bit is transferred, and

so on. The transfer eight bits in series, it takes eight time intervals.

When the bits are transferred in parallel form, all the bits are in group are sent out on

separate line at the same time. There is one line for each bit, as shown in Figure 1.19 for the

example of eight bits being transferred from a computer to a printer. To transfer eight bits

in parallel, ...