Contents management practices. Section B Today, there are many computer categories. A(n)is the category for the world's fastest computers. computers are large, expensive devices capable of simultaneously processing data for thousands of users. Computers used by Google and Web service providers are classified asPersonal computers come in several varietier. A(n) computer fits on a desk, runs on power from an electrical wall outlet, and can be housed in a horizontal case or vertical case. Three categories of portable computers include tablets, smartphones, and clamshell stylecomputers. Selecting a digital device requires consumers to select a platform based on form factor and operating system. MacOS is the operating system that runs on Apple laptops andcomputers. The operating system for iPhones and iPads isThe operating system from Microsoft runs on laptop and desktop PCs, whereas a derivative version is designed for phones. The open source community produces Linux for desktops and servers. This family of operating systems also includes Chrome OS, and , which is popular for tablets and smartphones Section C