Modern casino one armed bandits are controlled by computer chips and software, and the winning %s are pre-programmed into the game software.
Casino Slots have RNGs which are eternally generating combinations, even when the slot machine is not being played.
Running jointly with the random # generator of the casino slot machine is the payout percent.
The pay out percent controls how much the slot machine game will pay, for example the pay per cent could be ninety per cent, meaning the slot machine game will pay ninety percent of all the stakes played, … the casino will then get to keep ten per cent.
This does not mean that every time you bet 10 credits you will receive 9 in return – where’s the fun … exhilaration in that? Instead, the casino slot machine just won’t payout for a bit, and then suddenly go on a hot streak and you might hit a big pot prize.
The pay out %s shall vary between the different games and some of the notably famous casinos, e.g. Golden Online Casino, which tenders a payout of up to 95 percent!
This means that, in essence, the one-armed bandit takes all the funds played into it and pays it out to some fortunate winners. The casino only gets to keep a generally small per cent of all the odds allocated.
The casino one armed bandit software controls every part of the machine, from the flickering lights to the rotating of the reels.
When you hit spin on the one-armed bandit, a combination is generated by the RNG which relates to the pictures on the reel.