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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.
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).
The commonly used keys for gaming on a computer are the 'W', 'A', 'S', 'D', and the keys close and adjacent to these keys. These keys and style of using a keyboard is referred to as WASD. A gaming keypad will not only optimize the WASD layout, but will often contain extra functionality, such as volume control, the Esc. key, the F1–F12 keys ...
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.
The numeric keypad found on the keyboard is also used as a game controller and can be found on a number of separate devices, most notably early consoles, usually attached to a joystick or a paddle. The keypad is a small grid of keys with at least the digits 0–9.
The keyboard controller was relatively rare on the 2600, but a more substantial version for numeric input was more common on the Atari 400 and 800. Keyboard controllers were used in the Atari systems as auxiliary inputs, for numeric keypads on the 8-bit machines and special purpose controllers on the 2600, like the Star Raiders port. They were ...
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Shoulder buttons ("bumpers") and triggers on an Xbox 360 controller. Some common additions to the standard pad include shoulder buttons (also called "bumpers") and triggers placed along the edges of the pad (shoulder buttons are usually digital, i.e. merely on/off; while triggers are usually analog); centrally placed start, select, and home buttons [clarification needed], and an internal motor ...