Generally, a MIDI instrument is an input device. It takes the musical data from the user who plays it. Playing the instrument sends input into the computer. However, depending on the instrument, such as if the instrument is standalone, it can possibly be used as an output device as well. Files stored on the computer could cause the instrument to play. So some are strictly input devices and some are I/O devices.
input
The main difference is in their functions. An input device sends a signal to a main system to be translated, such as a keyboard sending input to a computer. An output device takes a translated signal from the system and relays it, such as a speaker playing music from a computer.
An input device is a piece of hardware that you put data into the computer, such as a mouse or keyboard. An output device is something that the computer controls to output data, such as the screen or speakers.
Output, the sound is coming from the computer. Headphones are output; they produce something after receiving signal from another device, such as a computer or electronic player. When you use headphones they go in the output port of your computer.
Output. Think ablout it, they are receiving data, not sending it.
A cell is neither an output nor an input device. A cell, also known as a cell phone or mobile phone, is an electronic device that is used for communication and can perform a wide range of functions, such as making calls, sending messages, browsing the internet, taking pictures, and playing music. While it does have input and output capabilities, such as a touchscreen display and speakers, it is not classified as an input or output device. Instead, input devices are used to provide data to a computer or electronic device, while output devices display or transmit information from the device to the user.
A scanner is an output device because it doesn't receive data it only sends out data.
It is an input device for a computer with letters, numbers and symbols on it. It can also be used in playing music.
A monitor is first and foremost an Output Device because it displays information already held in the computer. Touchscreen monitors that allow you to input information or to use navigational features such as menus, icons and so on are also Input Devices. Another example of a device that is both an input and output device is a joystick with Force Feedback technology.
Input is what goes into something and output is what you get out. In terms of computing, data going in is input and data that comes out is output. When you type something on your keyboard, you are sending input to your computer. It responds by displaying what you type on your monitor. That is output. Movements and clicks with your mouse are the same. They are inputs. You see the pointer move on your screen, which is output. When you print something or if you are playing music on your computer, that is output. Installing software can be input, or copying files onto your computer from a disc, a USB key, a digital camera etc. can also be input.
Input devices for PDA's, smartphones, and tablet pc's are called Apps or Applications. Apps are software programs that let the user do a variety of things like playing games and listening to music.
An input device is something that enters anything into a secondary system that's following. A mouse is used to maneuver a UI A monitor is used to display the mouse and the UI Mouse being input Monitor being output If you have any specific devices just post them