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A game controller, gaming controller, or simply controller, is an input device or input/output device used with video games or entertainment systems to provide input to a video game. Input devices that have been classified as game controllers include keyboards , mice , gamepads , and joysticks , as well as special purpose devices, such as ...
Today the keyboard controller is either a unit inside a Super I/O device or is missing, having its keyboard and mouse functions handled by a USB controller and its role in controlling the A20 line becoming integrated into the chipset's northbridge and then later into the CPU's built-in integrated memory controller.
Modern game controllers and joysticks are often USB HID class devices. Unlike legacy game port devices, USB HID class game devices do not normally require proprietary drivers to function. Nearly all game devices will function using onboard drivers as long as the device is designed around the drivers and the USB HID class specifications.
An Embedded Controller (EC) is a microcontroller in computers that handles various system tasks. Now it is usually merged with Super I/O , especially on mobile platforms (such as laptop). Tasks
The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the Shift, alt and control state of the keyboard.
The keyboard controller is also MIDI compatible via a standard MIDI port (5-pin DIN connector) on its side. As such it can be connected to most synthesizers (via a MIDI cable) and computers (via a MIDI-to-USB adapter), allowing the controller to be used as a real musical instrument. The controller transmits keyboard notes on MIDI channel 1.
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The sound module or synthesizer in turn produces a sound that is amplified through a loudspeaker. The most commonly used MIDI controller is the electronic musical keyboard MIDI controller. When the keys are played, the MIDI controller sends MIDI data about the pitch of the note, how hard the note was played and its duration.