What is a slot machine and how does it work?

A slot machine is an electro-mechanical gambling machine utilizing randomized numbers to provide probable results. How a slot machine work is both more complicated and interesting than you would think. The machine features a payout table, reels, winning paylines, a credit meter, and arm or spin button.

The payout table shows the player what each of the combinations is worth when three, four or five identical symbols appear on a single payline.  Classic slots feature a single payline while video slot offers multiple payline or calling winning lines across the reels, so with most slots options are given on how many payline you want to wager on. Each of the paylines is equal to one bet, so by selection a one-coin bet across five paylines it will equate to betting of 0.05, should the coin denomination value equal 0.01.

The credit meter keeps track of the number of credits the player has, also referred to as the player’s bankroll and subtract bets, while it also adds winnings. The main reason why the credit meter in most cases shows credits instead of money or cash amounts is that for the player, losing credits are not as traumatic as losing money.

The spin button should only be used once you have selected the number of paylines as well as the coin denomination and number of coins per payline, once the spin button is selected, the button locks the setting, and select a series of random numbers, while the reels spin.

The RNG is responsible for ensuring that the result of every spin is fair and random number generated. The RNG generates thousands of numbers per second and RNGs are also assisted via the use a method that gathers thermal noise and transforms that into electrical signals to assist in generating the numbers as computers on their own are only able to generate pseudo-random numbers.

Reels are basically for the show since by the time they start spinning the slot machine already has the outcome of the spin. The reason for reels being added for visual purposes only is that the spinning and reels coming to a halt in sequence builds suspense and excitement for the player, while it also keeps gamblers interested. Each of the reels usually offers 20 to 30 stops, which are the symbol spaces on the reel.

Each slot machine also has an EPROM, this is the erasable programmable with a read-only memory, which regulates the weighting of the machine, it ensures the desired payout percentage is reached.