In computing, it is known as input and output devices or mixed or bidirectional peripherals. Those electronic accessories that allow the entry and exit of information, that is, enter and extract data from the system, either as part of a support mechanism rigid (physical) or not.
In other words, the input and output devices carry out the tasks of the input devices and the output devices at the same time, which is why they are called “mixed,” or Input / Output (I / O ), often said in English: Input / Output (I / O).
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In this context, when we speak of input or input, we refer specifically to the act of feeding information to the computerized system, that is, enlarging the content of its database. This can be done using input devices such as the keyboard, mouse, or camera.
Instead, when we talk about output, we refer to the retrieval or copying of the information available in the computerized system, often transferring it to physical or other types of medium. This can be done using output devices, such as a printer, a screen or monitor, or a digital projector.
Examples of input and output devices
Some simple examples of I / O devices are as follows:
- Multifunctional printers. They were very fashionable in the early 2000s, allowing both documents to be printed (output) and scanned (input). And they even had a photocopy function (input/output).
- Touch screens. Like the one that our mobile phone has, we can see the information that the system emits for us (exit) and at the same time, enter information by pressing it with our fingers (entry).
- Network devices. Modems and network cards are devices that allow you to connect our system too vast computer networks, from which you can extract or download information (input), or you can send it (output), as when we add a photo to an email.
- Virtual Reality Headsets. These devices are placed on the head to simulate a real presence in a virtual environment, emitting a virtual world in the viewers arranged before our eyes (output) and receiving responses from our behavior when moving the head (input) in a feedback process. Which can be seen perfectly in video games.