3-33
Figure 3-29. —Data transfer methods: A. Serial transfer; B. Parallel transfer.
Serial-to-parallel conversion or parallel-to-serial conversion describes the manner in which data is
stored in a storage device and the manner in which that data is removed from the storage device.
Serial-to-parallel conversion means that data is transferred into the storage device or register in serial
fashion and removed in parallel fashion, as in figure 3-30, view A. Parallel-to-serial conversion means the
data is transferred into the storage device in parallel and removed as serial data, as shown in view B.
Figure 3-30. —Data conversion methods: A. Serial-to-parallel; B. Parallel-to-serial.
Serial transfer takes time. The longer the word length, the longer the transfer will take. Although
parallel transfer is much faster, it requires more circuitry to transfer the data.
