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The machine pays out according to the pattern of symbols displayed when the reels stop “spinning”. Slot machines are the most popular gambling method in casinos and contribute about 70% of the average U.S. casino’s income. Digital technology has resulted in variations in the original slot machine concept.

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SLOT MACHINE

A standard layout features a screen displaying three or more reels that “spin” when the game is activated. Some modern slot machines still include a lever as a skeuomorphic design trait to trigger play. However, the mechanical operations of early machines have been superseded by random number generators, and most are now operated using buttons and touchscreens.

include one or more currency detectors that validate the form of payment, whether coin, banknote, voucher, or token. The machine pays out according to the pattern of symbols displayed when the reels stop “spinning”. Slot machines are the most popular gambling method in casinos and contribute about 70% of the average U.S. casino’s income.

is a gambling machine operated by inserting coins into a slot and pulling a handle that activates a set of spinning symbols on wheels, the final alignment of which determines the payoff that is released into a receptacle at the bottom.

Digital technology has resulted in variations in the original slot machine concept. As the player is essentially playing a video game, manufacturers can offer more interactive elements, such as advanced bonus rounds and more varied video graphics.

Terms and their sources

The “slot machine” term derives from the slots on the machine for inserting and retrieving coins. “Fruit machine” comes from the traditional fruit images on the spinning reels such as lemons and cherries. Slot machines are also known pejoratively as “one-armed bandits”, alluding to the large mechanical levers affixed to the sides of early mechanical machines, and to the games’ ability to empty players’ pockets and wallets as thieves would.

Operation

Depending on the machine, the player can insert cash or, in “ticket-in, ticket-out” machines, a paper ticket with a barcode, into a designated slot on the machine. The machine is then activated by means of a lever or button (either physical or on a touchscreen), which activates reels that spin and stop to rearrange the symbols. If a player matches a winning combination of symbols, the player earns credits based on the paytable.

Multi-line slot machines have become more popular since the 1990s. These machines have more than one payline, meaning that visible symbols that are not aligned on the main horizontal may be considered as winning combinations. Traditional three-reel slot machines commonly have one, three, or five paylines while video slot machines may have 9, 15, 25, or as many as 1024 different paylines. Most accept variable numbers of credits to play, with 1 to 15 credits per line being typical. The higher the amount bet, the higher the payout will be if the player wins.

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