In the computer world, when we talk about concurrency, we refer to a series of independent and unrelated tasks that run simultaneously on a computer. This simultaneity can be real if the computer has more than one processor or a multi-core processor, or it can be apparent if the computer has only one core processor.
All modern operating systems allow the execution of concurrent tasks. You can read your e-mails while listening to music or reading news on a web page. We can say this is process-level concurrency. But inside a process, we can also have various simultaneous tasks. Concurrent tasks that run inside a process are called threads. Another concept related to concurrency is parallelism. There are different definitions and ...
