Overlapped I/O
Overlapped I/O is like asking your mom for cookies. Let's say you really love cookies and you want your mom to bake some for you.
Sometimes, your mom might be busy doing other things like cooking dinner or cleaning the house. This is like the computer being busy doing other tasks.
But, your mom can use overlapped techniques to bake cookies and do other things at the same time. For example, she could put cookies in the oven to bake and then go back to cleaning the house. This way, she is doing two things at once. She is overlapping the time it takes to bake the cookies with the time it takes to clean the house.
Similarly, a computer can overlap I/O tasks like reading or writing data to a hard drive with other processing tasks. This means that the computer can do multiple things at the same time, which can make it faster and more efficient.
So, just like how your mom can bake cookies and clean the house at the same time, a computer can do multiple tasks at the same time using overlapped I/O techniques.
Sometimes, your mom might be busy doing other things like cooking dinner or cleaning the house. This is like the computer being busy doing other tasks.
But, your mom can use overlapped techniques to bake cookies and do other things at the same time. For example, she could put cookies in the oven to bake and then go back to cleaning the house. This way, she is doing two things at once. She is overlapping the time it takes to bake the cookies with the time it takes to clean the house.
Similarly, a computer can overlap I/O tasks like reading or writing data to a hard drive with other processing tasks. This means that the computer can do multiple things at the same time, which can make it faster and more efficient.
So, just like how your mom can bake cookies and clean the house at the same time, a computer can do multiple tasks at the same time using overlapped I/O techniques.