)A set of codes that extends the basic ASCII set. The basic ASCII set uses 7 bits for each character, giving it a total of 128 unique symbols. The extended ASCII character set uses 8 bits, which gives it an additional 128 characters. The extra characters represent characters from foreign languages and special symbols for drawing pictures.
- extended keyboard
A keyboard for Macintosh computers that contains up to 15 function keys above the alphanumeric keys, and a numeric keypad. It is sometimes called an enhanced keyboard because of its similarity to the PC enhanced keyboard.
- extended memory
Memory above and beyond the standard 1MB (megabyte) of main memory that DOS supports. Extended memory is only available in PCs with an Intel 80286 or later microprocessor. Two types of memory can be added to a PC to increase memory beyond 1MB: expanded memory and extended memory. Expanded memory conforms to a published standard […]
(1) An extra feature added to a standard programming language or system. (2) In DOS and some other operating systems, one or several letters at the end of a filename. Filename extensions usually follow a period (dot) and indicate the type of information stored in the file. For example, in the filename EDIT.COM, the extension […]
- external bus
Another name for an external data bus.
- external command
In DOS systems, any command that does not reside in the COMMAND.COM file. This includes all other COM files, as well as EXE and BAT files. Commands in the COMMAND.COM file are called internal commands.