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Chapter 3 Computer Hardware - Coggle Diagram

- - - - Computer terminals, essentially any device that allows access to a computer, are undergoing a major conversion to networked computer devices.
    - - Network computers (NCs) are a microcomputer category designed primarily for use with the Internet and corporate intranets by clerical workers, operational employees, and knowledge workers with specialized or limited computing applications.
  - - - Distributed or grid computing in general is a special type of parallel computing that relies on complete computers (with onboard CPU, storage, power supply, network interface, and so forth) connected to a network (private, public, or the Internet) by a conventional network interface.
  - - - Early computer processing speeds were measured in milliseconds (thousandths of a second) and microseconds (millionths of a second). Now computers operate in the nanosecond (billionth of a second) range, with picosecond (trillionth of a second) speed being attained by some computers.
        
        However, most computers can now process program instructions at million instructions per second (MIPS) speeds. Another measure of processing speed is megahertz (MHz), or millions of cycles per second , and gigahertz (GHz), or billions of cycles per second.
- - - - Optical scanning devices read text or graphics and convert them into digital input for your computer.
    - - Magnetic stripe technology is a familiar form of data entry that helps computers read credit cards.
    - - Speech recognition may be the future of data entry and certainly promises to be the easiest method for word processing, application navigation, and conversational computing because speech is the easiest, most natural means of human communication.