Modern casino Slots are controlled by computer chips and software, and the win %s are preprogrammed into the software.
Casino Slots have Random Number Generators that are continuously generating combos, even when the slot machine is not being played.
Running collectively with the RNG of the casino slot machine is the pay out percent.
The pay out % controls just how much the slot machine will pay out, for e.g. the pay out percentage might be ninety percent, which means the slot machine will pay out ninety per cent of all the stakes played, and the casino only gets to keep 10 percent.
This is not to say that for every time you bet 10 credits you will receive nine in return – where’s the fun … exhilaration in that? Instead, the casino slot machine won’t payout for a while, and then suddenly go on a hot streak and you might catch the big top prize.
The pay off percentages shall vary between the a variety of games and some of the highly popular casinos, for example Golden Online Casino, which hands out a payment of up to 95 per cent!
Thus, in essence, the one-armed bandit takes all the cash played into it and pays it out to a number of privileged winners. The casino only gets to keep a fairly minute per cent of all the gambles put out.
The casino slot software controls every part of the machine, from the blinking lights to the spinning of the reels.
When you hit spin on the slot machine, a combination is put together by the RNG which is linked to the pictures on the reel.