The classic slot machine design uses levers and elaborate gear configurations to control the game. The central element is the metal shaft supporting the reels. The reels spin when the lever is pulled and pay credits are awarded according to the pay table. Depending on the theme, symbols vary, but classic icons are fruit, bells, and stylized lucky sevens. Bonus features and special combinations are usually aligned with the theme. These features can give players a feeling of excitement when they win big.

The term slot describes an area that is narrower than a typical trench and is used to install underground utilities or other items. Slot trenching can be performed using conventional excavation techniques, but in most cases, minimal impact excavation techniques are preferred. Hydro excavation is a popular choice for slot trenching because it is non-destructive and less expensive. It is also safer and more efficient than conventional excavation methods. Its main benefits include ease of operation and reduced environmental impact.

A computer with expansion slots is capable of adding hardware. There are different kinds of slots, including PCI, AGP, and ISA. A motherboard’s definition will show a visual example of the types of slots. However, this does not necessarily mean that every computer has an expansion slot. A motherboard will have a minimum number of expansion slots, but it is possible to install more than one. For example, a computer that has a PCI expansion slot can add another card that adds more memory or capability.