Slot Machines and Random Number Generators
The slot machine of today will work pretty much like any other computer that people own. It will have its own microprocessor that controls all the functions including the one responsible for selecting the symbols to display. Other systems will have other jobs like monitoring how much you have won while another will be responsible for figuring out how many coins you put in, and one will be responsible for the display you see on the screen.
Aside from luck, the other thing that decides your fate in slots is a random number generator. It is the program responsible for all symbol combinations on a slot machine's screen. It is that part of a slot machine that dictates what symbols will show up. To understand today's slot machines you must understand the behavior of random number generators.
Random number generators merely produce random numbers which in turn will be used by the machine's system to figure out what symbols are to be displayed. The number generator works independently of all the other systems in the machine. No other system or function will interrupt it in its work, except of course when you turn the power off. It doesn't matter if you use tickets instead of coins, it will still continue to work without interference.
Random number generators will keep producing numbers even if no one is actually playing on the machine. This continuous process will usually result in millions of combinations made each day. Predicting the next winning set of symbols or even the pattern of the symbols that show up will be an impossible task. When someone makes this claim, you can be sure that it is a hoax.
Though random number generators tend to be unpredictable, players can still take certain measures to at least get the most of a slot gaming session. Slot machines also have payout percentages that are programmed into them. A payout percentage is the fraction of the money put into a machine that is given back to players in winnings. Some slot machines have higher payout percentages than others. You can make out which machine has a better payout percentage by checking out the machine's pay table.
Understanding how random number generators behave work will help you understand how slot machines work. You don't have to buy any slots gimmick that try to predict the pattern of symbols or the next spin. Sometimes all you need to do is to learn how to read pay tables in order to find the better machines to play on.