MS-DOS or Micro-soft Disk
Operating System is used as operating system in IBM PC compatible machines. The
name disk operating system indicates that whenever the machine is started it
will first look for operating system files in the disk.
The characters of DOS are as
follow :
v It is a single user operating system.
v It works only in micro computer.
v It supports Batch processing concept.
v It supports 640 KB or higher memory.
v It maintains hierarchical file system
organization.
v It is very easy to use.
v It provides command line interface to the
user which means that the user will type the command to perform the job.
v It supports varieties of softwares.
MS-DOS comprises of 3 essential
files and many command files. The 3 essential files are IO.SYS, MSDOS. SYS and
COMMAND. COM. The first two files are hidden files. IO.SYS FILE is meant to handle
input and output. MS-DOS.SYS file is used by application programs COMMAND. COM
file contains internal commands . It is the command interpreter. After booting
DOS, the system displays > prompt. The prompt usually includes the current
working drive.
What is File:-
File is nothing but an electronic document. The contents can
be ordinary text or executable programs. Each file is given a file name to identify
it. The file name is in the form.
File name .
Extension
File name can be maximum 8 characters.
Extension is optional and can be maximum 3 characters. Extension indicates what
type of file it is.
Example : WS . EXE
BBM . TXT
PRIME . FOR
Categories:
DOS
ms dos
Shikhya Institute
windows
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