BEST COMPUTER OF 2019 INFORMATION TOP TIPS” Computers are electronic devices that can follow instructions to accept input, a process that input, and produce information. This book focuses principally on microcomputers. However, it is almost certain that you will come in contact, at least indirectly, with other types of computers.
Supercomputers are the most powerful type of computer. These machines are special high-capacity computers used by very large organizations. For example, NASA uses supercomputers to track and control space explorations.
Mainframe computers occupy specially wired, air-conditioned rooms. Although not nearly as powerful as supercomputers, mainframe computers are capable of great processing speeds and data storage. For example, insurance companies use mainframes to process information about millions of policyholders.
Minicomputers, also known as midrange computers, are refrigerator-sized machines. Medium-sized companies or departments of large companies typically use them for specific purposes. For example, production departments use minicomputers to monitor certain manufacturing processes and assembly line operations.
Microcomputers are the least powerful, yet the most widely used and fastest-growing, type of computer. There are four types of microcomputers: desktop, notebook, tablet PC, and handheld computers.
Desktop computers are small enough to fit on top of or alongside a desk yet are too big to carry around. Notebook computers, also known as laptop computers, are portable, weigh between 4 and 10 pounds, and fit into most briefcases. A tablet PC is a type of notebook computer that accepts your handwriting.
This input is digitized and converted to standard text that can be further processed by programs such as a word processor. Handheld computers are the smallest and are designed to fit into the palm of one hand. Also known as palm computers, these systems typically combine pen input, writing recognition,
personal organizational tools, and communications capabilities in a very small package. Personal digital assistants (PDA) are the most widely used handheld computer