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In computing, DirectInput is a legacy [1] Microsoft API for collecting input from a computer user, via input devices such as the mouse, keyboard, or a gamepad.It also provides a system for action mapping, which allows the user to assign specific actions within a game to the buttons and axes of the input devices.
In computing, a keyboard controller is a device that interfaces a keyboard to a computer. Its main function is to inform the computer when a key is pressed or released. When data from the keyboard arrives, the controller raises an interrupt (a keyboard interrupt) to allow the CPU to handle the input.
A keyboard matrix circuit is a design used in most electronic musical keyboards and computer keyboards in which the key switches are connected by a grid of wires, similar to a diode matrix. For example, 16 wires arranged in 8 rows and 8 columns can connect 64 keys—sufficient for a full five octaves of range (61 notes).
Memory-mapped I/O is preferred in IA-32 and x86-64 based architectures because the instructions that perform port-based I/O are limited to one register: EAX, AX, and AL are the only registers that data can be moved into or out of, and either a byte-sized immediate value in the instruction or a value in register DX determines which port is the source or destination port of the transfer.
On the 84-key AT keyboard these were largely a subset of set 3, with some differences caused by the revised layout (for example, the position and scancodes of the function keys changed). Keys added since the PC AT often have different scancodes in set 2 and set 3, and in set 2 frequently have an E0 or E1 prefix.
A secondary character map program is accessible in a text field on Windows 10 and Windows 11 computers, using the keyboard shortcut ⊞ Win+., or the 😀 key in Windows 10's virtual touch keyboard, which is mainly used for the purposes of using emoji, but also allows access to a smaller set of special characters.
Game controllers (joy.cpl) (control /name microsoft.gamecontrollers) Allows one to add, display, troubleshoot, and use advanced settings on joysticks and game controllers and connect to other type of game controllers. Moved to the Settings app on Windows 10 Anniversary Update. Keyboard (control keyboard) (main.cpl)
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