It is recognized with the slot machines still the following: entrance money (this can be an entry room or ticket acceptor or a magnetic card reader), an outflow of money (i.e. a tray pieces) and a display system of the game (in the form of rolls or screens) and an engine of play random Generally, the game is very fast, and it is easy to understand. Jar either makes money or loses it.

Roulette machine is a common face anywhere. Attributed to the original automatic machine, the name Charles August Fey, who in 1894 made his own copy as the Horseshoe ("Iron Horse").

It was in the same year he left his employer (the California Electric Works Company, manufacturer of telephones, telegraphs, etc.). To develop a competing company. And they were successfully distributed in bars.

Although modern slot machines are electronic, they can occasionally the appearance of mechanical machines (machines with rollers). It is known that there are several types of electronic slot machines: machines videos roller machines, roll classics, poker, multiage.

Their operation is identical - it is a cycle of combinations (a list of all possible combinations that the machine can get out).

After the player has finished inserting money into the machine (coins, tickets, electronic money) that starts the game using buttons, a lever (slot machine) or a touch screen.

From the start of the game the player will be presented with a combination of the cycle. The size or duration of the cycle is measured in strokes, and now with video machines with 5 or 6 rolls and many symbols, the cycles may have durations of over 16 million hits.

For each slot there is an electronic payout. A particular machine has a fixed rate, it is often between 85 and 99.99%. The rates vary from one machine to another, which explains why, on some machines, the player has more the feeling of winning or losing.