A slot is a narrow opening in something, for example the gap for coins in a vending machine. A slot can also refer to a position in a sequence or series of events, for instance the time for a program on the TV schedule. It can also mean an assignment or position: I applied for the slot as chief copy editor.
In computer gaming, a slot is a container for dynamic content that either waits passively to be filled (a passive slot) or actively calls for it with an Add Items to Slot action or targeter. Slots are part of the CMS platform and work in tandem with scenarios, which act as content repositories, and renderers, which specify the presentation of that content.
The first slot machines were invented in the 19th century and were popular with gamblers in saloons, gambling houses, and casinos. The history of these machines is long and complicated. Originally, they were powered by mechanical reels and used paper tickets as tokens. They were designed to return a percentage of the money wagered by a gambler, and some of them could even include bonus games.
Modern slot machines use video monitors instead of reels to display symbols and paylines, but they still have a similar design. Many have a traditional jackpot, while others are linked to a progressive jackpot that increases over time. Some slots also feature Wilds that can substitute for other symbols and open bonus levels or other special game features.
Several companies have developed various versions of slot machines. Some of them are more complex and allow players to interact with the machines using touch-screen technology. Other slot machines are simpler and have a fixed number of paylines. In addition, some newer machines are connected to a central network and offer huge prizes in the form of cash or merchandise.
A slot is also a name for the notch or narrow opening in the shaft of a screw head that allows it to be engaged with a key. This is the same slot that is cut in a typewheel and used to engage a pin p in the case of a monotype.
The term slot can also be applied to an assigned or reserved position in a sequence or programme: The television show was scheduled for the top slot on the broadcasting schedule. It is also the name of a position in a hierarchy or organisation: He was promoted to the fifth slot on the board.