An application is a program you use to get some practical work done, such as word processing or accounting or illustrating. Programs such as WordPerfect, PageMaker, Excel, and Illustrator are all examples of applications. Programs such as Adobe Type Manager or Suitcase are utilities because we don t create work with them they just help you manage your computer system. Archie a search utility that surveys all FTP sites once a month and builds an index. The initial implementation of archie by McGill University School of Computer Science provided an indexed directory of filenames from all anonymous FTP archives on the Internet.
Later versions provide other collections of information.
This form of transmission is like sending packages through the mail with a address and a return address. Each character of data is a self-contained package with its own start and stop bits. In contrast to synchronous transmission, asynchronous transmission sends data without special timing information and the start and stop bits tell hardware and software that an entire character has been received. Asynchronous is the common form of transmission between modem and computer. The concept is based on using a credit card sized device that contains a computer chip.