What is a Slot?


A slot is a narrow opening in a machine or container into which something may be inserted. For example, a coin slot in a vending machine accepts cash or paper tickets with barcodes that can be scanned to pay out winnings. Similarly, a time slot in a schedule or program allows people to sign up for activities. For instance, visitors to a museum can book time slots a week or more in advance.

The term “slot” also refers to a position or a role. For example, a hockey player in the high slot is well-positioned to take a blistering slap shot. A slot can also be a place in a computer where an add-on card is installed to expand the system’s capabilities.

In the old days, slots were all-or-nothing affairs: a person yanked the lever and either all the cherries or stylized lucky sevens lined up and paid out, or they didn’t. But the introduction of microprocessors allowed manufacturers to assign different probabilities to each symbol on each reel, giving them greater control over payout size and percentage payback. This led to a variety of exciting new games, including video poker and video blackjack. Today, many slot machines have a theme, such as a style of art or movie, with symbols and bonus features aligned with the theme. In addition, some machines offer jackpots that increase with every spin until a player wins the jackpot or triggers the feature that enables them to collect it.