A Peripheral DMA Controller is a special type of computer chip that helps manage the movement of data to and from different parts of your computer. It's like a traffic cop that helps make sure data is sent to the right place and at the right time. The controller works by receiving instructions from the computer, and then sending commands to different parts of the computer, like the motherboard, hard drive, or RAM, to move the data. With a Peripheral DMA Controller, data moves quickly and efficiently, making sure your computer can keep up with all the work you do.