I know it by looking at the basics of the operating system . I casually flipped through it before to see if I don’t remember it clearly. I
know what it means.
Job: first appeared in the batch system, it refers to the basic unit of a work submitted by the user to the system, and is the sum of the work that the user requires the computer to do
in a transaction or calculation process.
A task, simply put, is a piece of work that the user asks the computer to do, and sometimes a process is also called a task.
This is in terms of multi-channel systems.
A process is a dynamic execution of a program, an image of the program code in the memory, and a dynamic operation process of the program code on the
data structure !
Thread, in fact, when it comes to the smallest execution unit of a program, it should be a thread. A thread is the
smallest unit that independently occupies a CPU unit. Each thread shares the data of the process. When each process is created, there is only one main thread.