The new iPad mini, right, and fourth generation iPad. (Getty...

The new iPad mini, right, and fourth generation iPad. (Getty Images) Credit: The new iPad mini, left, and fourth generation iPad. (Getty Images)

Apple took the wraps off an 8-inch tablet Tuesday in its biggest product move since the debut of the iPad two years ago, launching a smaller version of the gadget into a market staked out by Amazon.com and Google.

The 7.9-inch "iPad mini" marks Apple's first foray into the smaller-tablet segment. Apple also announced a fourth-generation full-sized iPad with improvements in graphics and processing speeds, just two days before Microsoft is due to show off its own "Surface" tablet.

Apple hopes to beat back their charge onto its home turf of consumer electronics hardware, while safeguarding its lead in the 10-inch tablet space that even deep-pocketed rivals like Samsung Electronics have found tough to penetrate.

Amazon's Kindle and Google's Nexus 7 have grabbed a chunk of the lower end of the tablet market and proved demand for a pocket-sized slate exists.

That has forced Apple into a space it has avoided and at times derided, analysts say.

A smaller tablet would mark the first device to be added to Apple's compact portfolio under Chief Executive Tim Cook, who took over from co-founder Steve Jobs just before his death.

Pfc. Raheen Tyson Heighter, of Bay Shore, was killed in Operation Iraqi Freedom. His mother has made it her mission to aid active-duty service members, veterans, first responders and Gold Star families. NewsdayTV's Virginia Huie reports. Credit: Randee Daddona; Photo credit: Cathy Heighter

'His sacrifice made a difference': Gold Star mother honors son's memory Army Pfc. Raheen Tyson Heighter, 22, of Bay Shore, was the first serviceman from Long Island killed in the Iraq War.

Pfc. Raheen Tyson Heighter, of Bay Shore, was killed in Operation Iraqi Freedom. His mother has made it her mission to aid active-duty service members, veterans, first responders and Gold Star families. NewsdayTV's Virginia Huie reports. Credit: Randee Daddona; Photo credit: Cathy Heighter

'His sacrifice made a difference': Gold Star mother honors son's memory Army Pfc. Raheen Tyson Heighter, 22, of Bay Shore, was the first serviceman from Long Island killed in the Iraq War.

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME