有两种用于在计算机之间传输数据的方法，如下所示：串行传输和并行传输。
串行传输：
在串行传输中，数据位从一台计算机双向传输到另一台计算机。在这种传输中，一位在一个时钟脉冲中流动。在串行传输中，一次传输 8 位，具有起始位和停止位。
并行传输：
在并行传输中，许多位同时从一台计算机传输到另一台计算机。并行传输比串行传输更快地传输比特。并行传输用于短距离。
串并传输的区别：
| S.NO |
Serial Transmission |
Parallel Transmission |
|---|---|---|
| 1. | In serial transmission, data(bit) flows in bi-direction. | In Parallel Transmission, data flows in multiple lines. |
| 2. | Serial Transmission is cost-efficient. | Parallel Transmission is not cost-efficient. |
| 3. | In serial transmission, one bit transferred at one clock pulse. | In Parallel Transmission, eight bits transferred at one clock pulse. |
| 4. | Serial Transmission is slow in comparison of Parallel Transmission. | Parallel Transmission is fast in comparison of Serial Transmission. |
| 5. | Generally, Serial Transmission is used for long-distance. | Generally, Parallel Transmission is used for short distance. |
| 6. | The circuit used in Serial Transmission is simple. | The circuit used in Parallel Transmission is relatively complex. |