Si Redd’s Coin Machines, also known as SIRCOMA, released its version of Draw Poker in 1979. The significance of that statement may be increased with the news that SIRCOMA eventually went on to become International Game Technology (IGT). It was a huge hit. One of the reasons credited to the popularity of video poker and slots was how easy it was to learn how to play them. This was long before the huge presence of online video poker and other casino games we have today. Many customers were intimidated by brick-and-mortar casinos. These machines offered a new way to play, without any pressure.
Video poker follows the same hand ranking rules as regular poker with Royal Flush being the highest hand. It is also important to note that in video poker, it is the hand that matters regardless of the value of the cards forming it. For example, a pair of Aces will pay the same as a pair of Jacks and a Straight from 9 to K will pay the same as a straight from 2 to 6. Here is the poker hand ranking in a descending order:
A straight is a hand with consecutive ranks, like 9? 7? 10? 8? 6?.  Notice again that the cards don't have to appear in order.  The order of face cards, from lowest to highest, is Jack, Queen, King, Ace, which we abbreviate J, Q, K, A.  An ace can also count as 1, to complete a straight where the other cards are 2, 3, 4, and 5.  But it can't count as both a low and a high card, e.g., Q K A 2 3.
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