OS PART 8

1. SYSTEM PROGRAM

2. • It is a computer software designed to provide
services to other software.
• It provides an application programming
environment on top of the hardware. E.g:
program loader, editors, etc.,

3. CATEGORIES
1. File management
2. Status information
3. File modification
4. Program loading and execution
5. Communications

4. • Create, delete, copy, rename, print, etc.,
FILE MANANGEMENT
File management
Directory = a storage area,in a
secondary storage volume
File = a group of
related records

5. STATUS INFORMATION
It covers the date, time, disk space available
Memory and number of user.

6. Text editors are used for file modifications. Here a new
file may be created or content of the file may be
modified.
FILE MODIFICATIONS

7. EXECUTION
At the time of execution, the machine language
program has to be brought into the memory
from the disk and then loaded at the suitable
locations. This is done by a piece of software
called loader.

8. COMMUNICATIONS
It allows user to send email message to browse
web pages etc.,