Random Number Slot Machine
The Random Number Generator (RNG) is the brains of the slot machine. While most players know that there is a computer chip picking the numbers, they do not fully understand how it works and this can lead to some of the many myths and misconceptions about a slot machine. One of the most common myths is that a machine has a cycle that can let a player know when it is due to hit. Many “Snake Oil Salesmen” will try to sell you a system for doing just that. Save your money — it can’t be done.
The RNG Program
Slots are electro-mechanical gambling machines that use randomized numbers and produce probable results. Payout table The pay table shows the player what combinations pay out and how much. Are Random Number Generators in Slot Machines Really Random? By John Robison. One of the questions I'm asked most often is - 'how is it possible for a slot machine to be a random device and for a machine to also pay back a certain percentage of the money played through it?' If the results are truly random, people argue, then the payback should. THE RANDOM NUMBER GENERATOR. For a slot machine, the random number generator (RNG) is everything. In the early days, slot machines used mechanical concepts for randomization which obviously has limitations. In the past several decades, the entire random number. Properly designed slots which work with true Random Number Generators are theoretically unbeatable. But in reality, there are many documented cases of players who managed to trick slots into paying them out much more than the casino owners’ had hoped. Many of these tricks are blatant theft. The number of possible outcomes on the slot machine does not change. However, by reprogramming the chip, the operator has full control over the likelihood of each of the different outcomes. For instance, the operator could make the three cherries appear only once in a million spins.
Inside the slot machine is a microprocessor similar to the one in your home computer. Instead of running Word or Excel, it runs a special program, the RNG, that generates numbers to correspond to the symbols on the reel of the slot machine.
You might say that the RNG is in perpetual motion. As long as there is power to the machine it is constantly selecting random numbers every millisecond. The RNG generates a value between 0 and 4 billion (approx number) which is then translated into a specific set of numbers to correspond to the symbols on the reels. The outcome of each spin is determined by the number selected by the RNG. This number is chosen when you hit the spin button or deposit a coin.
The RNG uses a formula known as an algorithm which is a series of instructions for generating the numbers. The scope of this is beyond most of our mathematical knowledge but can be checked for accuracy. This is done by the Casino Control Board and other testing laboratories to make sure that the program performs as it should so the player will not be cheated.
Principles of the Random Number Generator
Here is a more simplified explanation that's easier to relate to. Although this is not precisely how the RNG operates, it should give you a basic understanding of the principles of how the winning spins are determined.
Reel Type Slot Machines
Reel type slot machines have a number of spaces on each reel that contain a symbol or blank. These are referred to as the physical stops. Most of the old mechanical machines had reels that could hold 20 symbols while the modern slots have reels with 22 physical stops. The microprocessing technology allows the new machines to be able to accommodate a large number of “Virtual stops” which I will explain in a future article.
For this example, let’s simplify things and imagine that there are only 10 stops on each reel. With 10 stops there can be 1,000 different combinations. We get this number by multiplying the number of symbols on each reel. (10 x 10 x 10 = 1,000) The 1,000 combinations that can be attained are known as a cycle, and this is the word that sometimes confuses a player into thinking that the machine has cycles of winning and losing.
The odds of a three number combination being picked are one in a thousand. Theoretically, if you play 1,000 spins you should see each of these number combinations once. However, we all know that this is not the case. If you played a million spins you would see that the numbers would even out to be closer to the actual probability. This is similar to flipping a coin 100 times. Although the odds are 50 -50 you are unlikely to see 50 heads and 50 tails after 100 spins.
The Daily Pick 3 Lottery
Many of you have seen the Daily Pick 3 lottery drawing. They have three glass bowls or drums each containing ten balls numbered 0 -9. The balls are mixed up and when the top is lifted a ball pops up the tube showing you the first number. This is repeated for the second and third number to give you a three-digit winning combination.
To use this as an example of the operation of the slot machine, we will replace the numbers 0-9 on the balls with slot symbols. In each bowl, we will have one ball with the jackpot symbol on it. Two balls with a Bar, three balls with a cherry and four balls which are blank. Imagine the RNG in the slot machine as the person drawing the winning combination.
Here is the breakdown of the number of times out of a thousand that the winning combination made.
- 3 Jackpot 1 (1x1x1)
- 3 Bars 8 (2x2x2)
- 3 Cherries 27 (3x3x3)
- Total Wins 37
Pseudo Random Number Generator In Slot Machines
The 963 losing combinations consist of:
- 3 blanks
- 2 blanks and a symbol
- 1 blank and two different symbols
- 3 mixed symbols
The RNG picks these combinations of numbers thousands of times each second. Now imagine a string of blinking lights where only one bulb can be lit at a time. The electrical current is zipping from bulb to bulb down the string. When you push a button the current stops moving and the bulb in that position lights up. In this example, the light represents the three digit number just picked by the RNG. If you hesitated a second before pushing the button the results would be different. This is the same as you getting up from a machine and seeing someone else sit down and hit the jackpot. The chances are astronomical that you would have hit the spin button at the exact same millisecond.
The modern slot machine uses an algorithm known as a random number generator, RNG, which does not use any form of memory to determine when a number should be generated.
Although it is known as a random number generator, the modern, Online slot machine actually randomly generates the different tiles used on the different spaces of a slot machine. All the different combinations of numbers, whether generated across three, five, or even greater numbers of reels, are random and must generate numbers independent of each other.
New Random Slots
The history of slot machines began with metal reels filled with numbers that would spin and stop with a magnetic braking system. This system would randomly generate a stopping point for each drum after the reels were spun by the player. Some players would believe they had seen a moment when a slot machine became hot or would stop paying out.
RNG is used in video slots in casinos around the world. The modern slot machine does not have any built-in memory and generates hundreds of numbers per minute.
Slot Machine Random Number Generator Algorithm
The lack of memory means the algorithm used to generate each number is completely independent of each reel on the slot machine. It is possible for a player to hit a jackpot on a number of occasions in specific plays, but this is a purely random part of the gameplay developed through the use of algorithms.
Every slot machine at a casino uses something called a par sheet which provides information about the odds for each tile on a reel. Each reel is weighted to reach a certain number of spins for every time a certain tile is generated by the algorithm. The lower the number of tiles appearing on each reel lowers the odds of a jackpot.
Random Number Generator Slot Machine
Each slot machine algorithm also includes the payback percentage which gives an insight into the winnings a player can expect as they play. The percentage is usually given as a number of around 97 percent which means a player can expect to win from $3 gambled in every $100. This number is not a figure of how much money a player will win but is part of the algorithm deciding how often the slot machine will offer a winning spin.
Random Number Generator Used In Slot Machines
Want to know where slot machines came from? Check out the history here!