Slot machines are electronic devices that use random number generators to select winning combinations. They are usually activated by a lever or a button. The machine then spins a set of reels. Once the reels have spun, a braking system stops them.

If the reels stop, the player can then insert a coin. Depending on the type of slot, there may be a pay table or a special feature. The features are typically aligned with the theme of the game.

The payouts vary by machine, but they are usually proportional to the number of coins inserted before the handle is pulled. Pay tables are generally listed on the face or in the help menu.

There are also multiple-coin/multi-line machines, which allow the player to choose the number of coins to be inserted per line. Multi-line slots increase the odds of winning a spin.

Slot machines also feature video-slots, which are simulated on a monitor. This gives the player the illusion of control. These machines operate in the same way as regular ones, except that the images are displayed instead of spinning reels.

Most modern slot machines are computer-controlled. Instead of gears and tilt switches, the reels are driven by short digital pulses of electricity. Each spin is independent from the previous one.

A slot machine’s random number generator is a special algorithm. It ensures that the probability of winning a jackpot is equally distributed. In the example above, the maximum payout is 2,400 credits.