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Paddle (game controller)
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A paddle is a game controller with a round wheel and one or more fire buttons, where the wheel is typically used to control movement of the player object along one axis of the video screen. A paddle controller rotates through a fixed arc (usually about 330 degrees); it has a stop at each end and rotating it further can break it.
How it works
The paddle wheel is usually mechanically coupled to a potentiometer, so as to generate an output voltage level varying with the wheel's angle relative to a fixed reference position.
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Encyclopedia
A paddle is a game controller with a round wheel and one or more fire buttons, where the wheel is typically used to control movement of the player object along one axis of the video screen. A paddle controller rotates through a fixed arc (usually about 330 degrees); it has a stop at each end and rotating it further can break it.
How it works
The paddle wheel is usually mechanically coupled to a potentiometer, so as to generate an output voltage level varying with the wheel's angle relative to a fixed reference position. A paddle is thus an absolute position controller. That is, without any previous knowledge, the sensor can be read and the result directly indicates the position of the paddle knob. This is in contrast to a quadrature encoder-based device or "spinner".
Where employed
Paddles first appeared in video arcade games with Atari Inc.'s Pong in 1972, while the first console to use paddles was Magnavox's Odyssey that same year. The Atari 2600 used paddles for several of its games, as did early home computers such as the Commodore VIC-20. True (potentiometer-based) paddles are almost never employed anymore because they stop reading accurately when the potentiometer contacts get dirty or worn, because turning them too far can break them and because they require more-expensive analog sensing, whereas quadrature encoder-based controllers can be sensed digitally. Any recent game that has paddle-type control uses a quadrature encoder instead, even if the game uses paddles on screen (like Arkanoid).
Games
Some famous video games using paddles are Pong, Breakout, and Night Driver. The reason for the name paddles for this type of game controller is that the first game that used it, Pong, was a video game simulation of table tennis, whose racquets are commonly called paddles. Even though the simulated paddles appeared on-screen (as small line segments), it was the hand controllers used to move the line segments that actually came to bear the name.
Similar controllers
On the Atari 2600, the paddle controllers look very similar to the driving controllers. Paddle controllers come in pairs both connecting to a single controller port. Paddle controllers also rotate just under one full rotation before hitting a hard stop. Finally, they have a picture of a tennis racquet and the word "paddle" on it. Because two controllers connect to each port and the 2600 has two controller ports, four players simultaneously can play in games that support it. The Atari paddles are also compatible with the Atari 800 home computer, with its four game controller ports. This would allow eight paddles in simultaneous play, however it is doubtful there are any games released that support this many players.
Atari also offered driving controllers for use with games like Indy 500, which requires wheels that can spin around continuously in one direction. Driving controllers have a picture of a car and the word "driving" on it and a single controller and attach one to each controller port. The driving controller is not compatible with paddle games. Like a mechanical computer mouse, the driving controller is a quadrature encoder-based device and thus only sensed relative position, not absolute position. This controller is functionally identical to the spin-dial controller used in Atari's Tempest arcade game. Since only one controller attaches to each port, only two people can play driving games simultaneously.
Several similar relative spinner controllers have emerged as part of the home-built arcade cabinet scene to facilitate play of such games as Tempest, including spinners from Oscar Controls and the SlikStik Tornado spinner. These devices are typically made to plug directly into a computer as a single-axis mouse.
See also
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