Once upon a time, casinos liked slot machines about as much as they liked losing money. Prone to mechanical breakdowns and vulnerable to scammers, the devices invented in the 1890s were placed on the fringes of casinos' gaming floors,  That changed by the 1980s,  that using digital technology in slot machines could turn them into a safer bet for casinos. now often referred to more generically as gaming machines) account for almost 75 percent of the nearly $39 billion in gambling revenue American casinos generate, according director of the Center for Gaming Research at the University of Nevada Las Vegas. No wonder industry insiders today call slot machines "beautiful vaults."

Now the world's largest maker of gaming machines,resulting in product lines themed after "Sex and the City," "Jurassic Park," and "Wheel of Fortune."also introduced innovations over the years such as interactive video displays and multilevel progressive jackpots.