Learn

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 computer.

When it comes to devices, we mainly think of examples that require direct human interaction; however, the large range of IO devices can be categorized into three categories: human-readable, machine-readable, and communication.

Human readable devices are devices that can be interpreted/understood in a natural language structure by humans. Some examples include printers, keyboards, and a mouse.

Machine readable devices are devices that are formatted to allow communication between different hardware, without the need for human interpretation. Some examples include hard drives/disks, controllers, and SD cards.

Communication devices are devices that allow devices to interact over a network. A network is a set of devices that are linked to share some resources over a shared medium. Some examples of communication devices include modems and Bluetooth adapters.

Instructions

Take a look at the table to the right - it organizes some IO hardware devices into the three categories discussed above.

Take this course for free

Mini Info Outline Icon
By signing up for Codecademy, you agree to Codecademy's Terms of Service & Privacy Policy.

Or sign up using:

Already have an account?