The shift from desktop computers to tablets and smartphones isn't stopping Apple from updating its long-running series of iMacs. On Tuesday, along with the iPad Mini, the Cupertino, Calif.-based company unveiled two new versions of the iMac, with 21.5- and 27-inch screens.

The new iMacs, measuring only 5 mm thick at the edge, are 45 percent thinner than the previous version and a full eight pounds lighter. The 21.5-inch model has a 1920x1400 pixel display and the 27-inch as a 2560×1440 pixel display. The starting prices for the two computers are $1,299 and $1,799, respectively.

Apple also found a new way to make its computers look even more sleek and seamless. It used a special type of welding called friction stir to put the external components of the computer together.

"The molecules of the aluminum are actually merged together to make one piece," Phil Schiller said on stage while presenting the new iMacs.

The inside of the iMac, though, probably received the most significant upgrade. The new iMacs are powered by what Apple calls "fusion drives," a hybrid of a traditional hard drive and a solid-state drive that allows the machine to perform quickly while still having a lot of room for storage.

The iMacs also have upgraded speakers and a new full-lamination display that makes images appear as though they're sitting right on the screen.

Apple said the 21.5-inch version will ship in November, while the larger model will ship in December.

Read more about the new iMacs at Apple's website and take a look at the new iPad Mini unveiled today in the slideshow below:

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  • Apple Introduces A New iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at the Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • iPad vs. iPad Mini

  • Apple's New iPad Mini

    Source: Apple

  • Apple's Phill Schiller With iPad Mini

  • iPad vs. iPad Mini

  • The iPad Family

  • iPad Mini Has Same Display As iPad

    Source: Apple

  • Nexus 7 vs iPad Mini

  • Horizontal View Of The iPad Mini

    Source: Apple

  • Facebook For iPad Mini

    Source: Apple

  • iPad Mini

    Source: Apple

  • The iPad Mini Insides

    Source: Apple

  • Horizontal View Of The iPad Mini

    Source: Apple

  • iPad Mini

    Source: Apple

  • iPad Mini

    Source: Apple

  • iPad Mini

    Source: Apple

  • iPad Mini

    Source: Apple

  • iPad Mini Available In Black And White

    Source: Apple

  • iPad Mini

    Source: Apple

  • iPad Mini's Weight

  • Nexus 7 vs. iPad Mini

  • iPad Mini With Its Own Smart Cover

  • Using The iPad Mini

    Source: Apple

  • iPad Mini Cover

    Source: Apple

  • Inside Apple's Big Announcements

    Bianca tells Josh about the side-by-side product comparison Apple demonstrated at their recent press conference.

  • Apple Unveils iPad Mini - What You Need To Know

    Josh and Bianca chat about the just-announced iPad Mini.

  • iPad Mini Announcement

    Josh and Bianca discuss the highlights of the new iPad Mini--does it measure up?

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini (L) and fourth generation iPad are displayed after they were unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad minis are displayed after their unveiling at an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook speaks as the new iPad mini and fourth generation iPad are unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple Senior Vice President of Worldwide product marketing Phil Schiller displays the date when the new iPad mini and fourth generation iPad will be available to the public during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. Apple introduced the new iPad mini at the event, Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook speaks as the new iPad mini and fourth generation iPad are unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple Senior Vice President of Worldwide product marketing Phil Schiller shows the prices of the new iPad products during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. Apple introduced the new iPad mini at the event, Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple Senior Vice President of Worldwide product marketing Phil Schiller shows the prices of the new iPad products during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. Apple introduced the new iPad mini at the event, Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple Senior Vice President of Worldwide product marketing Phil Schiller shows the prices of the new iPad products during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. Apple introduced the new iPad mini at the event, Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook speaks displays the new iPad mini after it was unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook (L) displays the new iPad mini after it was unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook speaks displays the new iPad mini after it was unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook speaks displays the new iPad mini after it was unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple CEO Tim Cook speaks displays the new iPad mini after it was unveiled during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces A New iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at the Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces A New iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at the Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces A New iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at the Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces A New iPad

    SAN JOSE, CA - OCTOBER 23: The new iPad mini is displayed after its unveiling at the Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad mini is Apple's smaller 7.9 inch version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple Senior Vice President of Worldwide product marketing Phil Schiller announces the new iPad Mini during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad Mini is Apple's smaller version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

  • Apple Introduces Latest iPad

    SAN JOSE, CA - OCTOBER 23: Apple Senior Vice President of Worldwide product marketing Phil Schiller announces the new iPad Mini during an Apple special event at the historic California Theater on October 23, 2012 in San Jose, California. The iPad Mini is Apple's smaller version of the iPad tablet. (Photo by Kevork Djansezian/Getty Images)

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