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The Role of Operating Systems in IO Systems

The operating system is responsible for managing IO systems, the hardware and software necessary to handle input and output devices on a computer.

IO Hardware
Lesson 1 of 2
  1. 1
    IO, or Input/Output, devices refer to any physical devices that interact with a CPU. Input devices send signals to a computer and output devices allow for computers to send information out from a c…
  2. 2
    Device drivers and device controllers are important components of IO systems. Device drivers exist as software programs that the OS uses to communicate with device controllers. _Device controller…
  3. 3
    In order for data to be successfully transferred between IO devices and the CPU, it is important that the data can be written and read over some medium. Devices are designed to read or write data i…
  4. 4
    IO devices and operating systems communicate via data packets known as IO requests. When an IO device makes a request an application can respond in one of two ways: blocking, and non-blocking. …
  5. 5
    An interrupt is a signal that is sent from the hardware of an IO device to a computer to get its immediate attention. Because interrupts are handled on the hardware’s end, they decrease overhead …
  6. 6
    Memory-mapped IO refers to a system that is designed to allow both an IO device that is connected to a computer, and the memory of the computer to share address space to the interface. There ar…
  7. 7
    Congratulations on reaching the end of this lesson! Let’s review what we have learned so far about IO hardware: - There are different types of IO devices that can be categorized into three general…

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