are tiny and super-fast. They sit inside the computer’s brain and hold information that is being processed now; is also pretty small and quick. The CPU uses it to keep things close by as extract information about the current task or about the task that is coming up next; can hold a lot of information and is not quite as fast, but it is still within easy reach of CPU. This storage type is the CPU’s last resort before it moves on to the hard drive; is really big and takes the most time to get information from. If the CPU needs information from here, it moves the data to the other memory types, so it has easy access later.