1. 多任务处理：
多任务是多道程序设计的逻辑延伸。在该系统中，CPU 通过在多个作业之间切换来执行多个作业，通常使用很小的时间量，并且切换发生得如此频繁，以至于用户可以在每个程序运行时与其进行交互。多任务进一步分为两类：单用户和多用户。
2. 多处理：
多处理是具有两个或多个处理器的系统。在这种情况下，增加了 CPU 以提高系统的计算速度。由于多处理，有许多进程同时执行。多处理进一步分为两类：对称多处理、非对称多处理。
多任务和多处理的区别：
| S.No. | Multi-tasking | Multiprocessing |
|---|---|---|
| 1. | The execution of more than one task simultaneously is known as multitasking. | The availability of more than one processor per system, that can execute several set of instructions in parallel is known as multiprocessing. |
| 2. | The number of CPU is one. | The number of CPU is more than one. |
| 3. | It takes moderate amount of time. | It takes less time for job processing. |
| 4. | In this, one by one job is being executed at a time. | In this, more than one process can be executed at a time. |
| 5. | It is economical. | It is economical. |
| 6. | The number of users is more than one. | The number of users is can be one or more than one. |
| 7. | Throughput is moderate. | Throughput is maximum. |
| 8. | Its efficiency is moderate. | Its efficiency is maximum. |