Your computer manages processes with threads assigned to each process that its operating system runs. System processes have one principal thread and can begin new threads as needed. A thread represents a separate component of the program that acts as an independently scheduled process on its own, allowing the program to perform multiple tasks at the same time. Your task manager shows you how many threads each program has if you add the column to the "Processes" tab.
Press "Ctrl," "Shift," and "Esc" on your keyboard at once and let the three keys go. This brings up the task manager.
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Select the "Processes" tab. Click "View" and click "Select Columns."
Select "Threads" and click "OK."
Scroll to the right until you reach a column called threads. As you go down the column, you see how many threads all your programs have.