Slots are games that allow players to win cash by pulling a handle and spinning a series of reels. Each reel shows a different picture, which is either a winner or a loser.
The winning combination depends on which pictures line up along the pay line, a line that appears in the center of the viewing window. Certain single images are sometimes winners, too.
Modern slots often use video or virtual reels, and programmers have to account for a lot of combinations with them. The number of paylines also complicates the math.
There are so many possible combinations that slot machines have to be programmed with a random number generator, which is used to determine each spin’s outcome. The computer’s random number generator is designed to select a random result from among millions of possible results.
This randomness is the basis of slot machine’s House Advantage, which gives them an edge over other games. The odds are set to ensure that big winners turn up less often than small ones.
A Random Number Generator
The computer that drives slot machines is a complicated piece of equipment with a central processor and several sensors that register the position of the reels and tell it how to stop. The system uses step motors to move each of the reels a step at a time, and short pulses of electrical current are used to send the motors into motion.
A step motor is a special type of electric motor that can move a step with great precision, unlike an ordinary electric motor, which can only move a single step. The computer also sends a series of signals to the step motor, telling it when to stop and which switch to close to activate the payout mechanism.
In some cases, the step motors are triggered by a coin detector that registers when a player inserts a coin. The coin detector then opens a brake to bring the reels to a stop and communicates with the computer.
Some step motors are connected to a series of springs, which keep them in a standby position when they’re not being used. They’re also connected to a kicker and stoppers, which engage when you pull the handle.
There are many different types of stoppers and kickers that are used in slot machines, but the most common are a pusher and a lever. The pusher is connected to a metal shaft that holds the reels in place, while the lever is held against the discs by a stopper.
Once the spin is complete, a computer analyzes the reels’ positions to figure out which symbols are lining up on a pay line and what symbols need to be paid out. The computer then determines whether to pay out the full amount or a partial amount on those combinations.
The computer also calculates the overall return, which includes jackpot payoffs as well as bonus event payoffs. This information is reported to the casino by the 15th of each month and is posted on the website.