How the Slots Work

The recent slot machines differ widely from the conventional mechanical slots in various aspects. With the help of tension and springs, determining the rest position of the reel was quite awkward and sometimes very unfair in the conventional slot machines. But the new machines use complicated and refined electronic procedures through which the spin outcome is determined with high accuracy.

RNG is known as the “heart” of slot machines. As the machine gets power, it begins producing random numbers, which normally start from 0 and may go up to several million. The rate of producing random numbers is between 300 and 500 per second. No external source is allowed to influence the RNG in producing the random numbers, and it continues working as long as the machine has power.

The working of online and land-based modern slot machines is the same. You place your bet by pressing the spin button, and the next few available values are requested from the RNG. These values are then passed to a complicated computer program, which determines the reel positions.

It may seem like a long process, but all the computation finishes in a fraction of a second. For those who think that payouts are pre-programmed or that the payout time has already been set, this is not the case. The process is absolutely fair, and every spin has the same winning chances.

After detailed research on how slot machines work, we prepared an example to explain how the positions of the slot reels are determined and the technique used for payouts. In this example, we use a slot machine with 5 reels.

The Mechanism

When the spin button is pressed, the next 5 numbers from the random number generator are captured and stored in the machine's memory. The slot machine uses the first number to determine the position of the first reel, the second number for the second reel, and so on.

A pre-set number is used to divide the random number value, and the reel's position is determined based on the remainder. These are standard computer values like 16, 32, 64, etc. This approach works well because computer systems operate in powers of 2, making calculations efficient.

Consider an example: Suppose the RNG generates 3,486,421, which is divided by 128. This division yields a remainder of 81. The machine divides randomly generated numbers by 128 using a formula, so the remainder is always between 0 and 127. For each possible remainder, the machine maps it to a specific stop position on the reel.

Popular Slots

Try these popular slots to experience RNG in action: