1. Operating System and Utilities
Ms Jennifer - Introductiion to Operating Systems
Ms Jennifer IT-VET
Operating System and Utilities

2. What is a Computer Software?
Ms Jennifer - Introductiion to Operating Systems
What is a Computer Software?
Two types of Software:
System applications (Operating Systems and Utilities)
Software Applications (Word, Spread sheets, etc.)
Utilities

3. System Software What is System software?
Ms Jennifer - Introductiion to Operating Systems
System Software
What is System software?
System software in made up of:
Operating System
Utilities
Utilities
Examples of Operating Systems

4. Ms Jennifer - Introductiion to Operating Systems
Utilities?
We know that system software is made up of an operating system (OS) and of utilities applications.
So what are these utilities applications?
A utility is something that you utilize for a specific job or task. ( example we utilize the car or bus to get us to a destination)
Therefore when it comes to a computer, what do you think that a utility application does?

5. why do we need those computer utilities and why they are important?
Ms Jennifer - Introductiion to Operating Systems
why do we need those computer utilities and why they are important?
Utilities applications are important for managing and organizing our files and keep (maintain) our computers in optimal condition.
Thanks buddy, I am happy

6. What can go wrong with a computer?
Ms Jennifer - Introductiion to Operating Systems
What can go wrong with a computer?
spam
Computer Malware
Too many files, lack of disk space
and outdated software

7. Important utilities to keep my computer in optimal condition
Ms Jennifer - Introductiion to Operating Systems
Important utilities to keep my computer in optimal condition
Defragmentation
Compression
Scandisk
Antivirus
Formatting
Defragmentation
Formatting
Compression
Scan Disk
Antivirus
Utilities

8. Embedded and Separate Utilities
Ms Jennifer - Introductiion to Operating Systems
Embedded Utilities with OS
Separate Packages
Formatting
Defragmentation
Scan disk
Anti virus (ex. Microsoft security Essentials)
Anti virus software
File Compression
Embedded and Separate Utilities

9. Ms Jennifer - Introductiion to Operating Systems
Defragmentation
Let us pretend that the coloured boxes in the picture below are chunks of data. What do you think is happening in this short video clip?
Defragmentation is the process of organizing fragment computer data by placing them in their appropriate file locations, thus saving disk space.

10. Ms Jennifer - Introductiion to Operating Systems
File Compression
Troy needs to send 15 files by , but he will take plenty of time to attach one file a time.
Troy also knows that the total size of these files is too large to send them all by .
What can Troy do?
Troy can compress these files into ONE archive file and send only one attachment in a smaller size. This process is called Compression.
Size decreases with compression by reducing the bits / bytes of files

11. File Compression Utility software
Ms Jennifer - Introductiion to Operating Systems
File Compression Utility software

12. Ms Jennifer - Introductiion to Operating Systems
scandisk
When we feel sick we go to the doctor for a medical check up to cure our illnesses or virus.
Therefore it is important to do regular check ups to stay healthy
The computer also need regular check ups to make sure that it is clean and ‘cure’ (remove) its illnesses (malware).
The computer illnesses are called malware or computer virus.
The computer doctor is called scan disk.
Scan disk job is to scan the computer and remove bad sectors and malware from the computer.

13. Ms Jennifer - Introductiion to Operating Systems
Computer malware

14. Ms Jennifer - Introductiion to Operating Systems
There are many antivirus software packages:
Embedded with Microsoft Operating System
Antivirus Software
How can we protect our computer from malware and computer virus?

15. Formatting – why format?
Ms Jennifer - Introductiion to Operating Systems
Formatting – why format?
Upgrade the OS / Computer
Remove corrupted (damaged) / unwanted files
Prepare disk for fresh software (any disk like pen drive, hard disk, removable disks or a disk partition)
So, instead of changing our PC we can do a disk format to renew our PC to its original state (which is without an OS)
Note that every software upgrade has to be compatible with the computer hardware

16. Conclusion - Questions
Ms Jennifer - Introductiion to Operating Systems
Conclusion - Questions
Explain the use of the following utilities:
Defragmentation
Antivirus
Scan disk
File Compression
Formatting

17. Thank you Worksheet time
Ms Jennifer - Introductiion to Operating Systems
Worksheet time
Thank you