Modern casino one armed bandits are controlled by computer software, and the winning %s are pre-programmed into the computer software.
Casino slot games have Random # Generators which are continually generating combinations, even when the slot machine is not active.
Running concurrently with the Random Number Generator of the casino slot machine game is the payout rate per cent.
The pay out percent controls how much the one-armed bandit will pay, for e.g. the pay out % may be 90%, which means the slot machine game will payout ninety per cent of all the bets played, and the casino only gets to keep 10%.
This doesn’t mean that every time you bet ten credits you will receive 9 in return – where’s the fun and excitement in that? Instead, the casino slot just won’t payout for a little while, and then suddenly fire up a hot streak and you might hit a big jackpot prize.
The pay out %s shall vary between the various games and a couple of the highly acclaimed casinos, like Golden Online Casino, which gives a payment of up to ninety-five percentage!
So, in essence, the one-armed bandit takes all the dough played into it and pays it out to some lucky winners. The casino only gets to keep a basically small % of all the bets made.
The casino slot machine software controls any part of the machine, from the flickering lights to the spinning of the reels.
When you hit spin on the slot machine, a combination is put together by the RNG which corresponds to the pictures on the reel.

