Apple Inc.. headquartered in Cupertino. California.. manufactures. and markets mobile communication and media devices. personal computers. and portable digital music players and a variety of related software and services. The following is Apple': (simplified) balance sheet from a recent year (year ending on the last Saturday of: September) Apple Inc.. headquartered in Cupertino. California.. manufactures. and markets mobile communication and media devices. personal computers. and portable digital music players and a variety of related software and services. The following is Apple': (simplified) balance sheet from a recent year (year ending on the last Saturday of: September)