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Ch 2: Systems Software

About This Chapter

Learn about operating systems and other types of systems software with the bite-sized video lessons in this chapter. This chapter also explores some of the tools IT professionals use to manage computer systems.

Systems Software - Chapter Summary

Computers rely on effective systems, and the lessons in this chapter introduce you to systems software. The systems software you may be most familiar with are operating systems, such as the Windows or Apple operating system that runs your computer. You may also be familiar with firewalls and other systems that secure your computer and block viruses. IT professionals manage these types of software and other ones that you'll learn about in this chapter. Some of the topics covered in this chapter include:

  • Utility software
  • Graphical user interfaces (GUI)
  • Tips for managing computer operating systems
  • Security software, such as firewalls
  • Computer management tools
  • Systems used for communication
  • IT hardware
  • File systems
  • File types and extensions

Lesson Objectives

Browse the table below to see what you'll learn in each lesson in this chapter.

VideoObjective
Systems Software: Utility Software, Device Drivers, Firmware & GUILook inside your computer and learn about utility software, drivers and more.
Command Line Interface: Commands, Parameters & OptionsLearn about the command line interface, a tool for issuing commands to your computer.
Computer Operating Systems: Managing Hardware and Software ResourcesSee the basics of computer operating systems and learn how they help you interact with your computer.
Systems Security: Firewalls, Encryption, Passwords & BiometricsLearn different types of systems security, including the ubiquitous passwords and less common biometrics.
What Is Computer Management? - Maintenance & ToolsSee an overview of computer management processes and the tools that IT professionals use.
Communication Services: Integrated & Unified TechnologiesLearn what communication services are and discover two types of technologies used.
IT Software Services: Hardware MaintenanceFind out how IT professionals service computer hardware.
Units of Measurement: Megapixels, Kilobytes & GigahertzLearn how a megapixel compares to a pixel and other common units of measurement in computer systems.
Files Systems: FAT, NTFS, HFS+ and FFSExplore various files systems, which is a system called a data store that you use to store or retrieve files.
File Extensions and File Types: MP3, GIF, JPG, DOCX, XLSX, EXE, & MoreLearn about the file types you use everyday and discover some new extensions with which you may be less familiar.

8 Lessons in Chapter 2: Systems Software
Systems Software: Utility Software, Device Drivers and Firmware

1. Systems Software: Utility Software, Device Drivers and Firmware

System software coordinates the activities and functions of hardware and software, and it controls the operations of computer hardware. Learn about different types of system software, including utility software, device drivers and firmware.

Command Line Interface: Commands, Parameters & Options

2. Command Line Interface: Commands, Parameters & Options

Despite the popularity of graphical user interfaces, command line is still widely used. In a command-line interface, a user interacts with a computer by typing in lines of text. Learn about the use of commands, parameters and options.

Computer Operating Systems: Managing Hardware and Software Resources

3. Computer Operating Systems: Managing Hardware and Software Resources

This lesson will introduce you to computer operating systems and help you figure out the difference between application and operating system software. Also, we will learn the difference between a desktop and wallpaper.

Systems Security: Firewalls, Encryption, Passwords & Biometrics

4. Systems Security: Firewalls, Encryption, Passwords & Biometrics

Computer systems face a number of security threats. Learn about different approaches to system security, including firewalls, data encryption, passwords and biometrics.

What Is Computer Management? - Maintenance & Tools

5. What Is Computer Management? - Maintenance & Tools

A computer needs to be maintained in order to keep working properly. Learn about maintenance tasks, such as backing up your files, running antivirus software, installing software updates and using disk tools.

Units of Measurement: Megapixels, Kilobytes & Gigahertz

6. Units of Measurement: Megapixels, Kilobytes & Gigahertz

Computer systems use many different units of measurement. This lesson will review some of the most widely used units, including megapixels for digital photographs, kilobytes for storage and gigahertz for frequencies.

File Systems: FAT, NTFS, and HFS+

7. File Systems: FAT, NTFS, and HFS+

Computers use file systems to control how information is stored and retrieved. Each file system has its own structure and logic. Learn about the different types of file systems for different operating systems in this lesson.

File Extensions and File Types: MP3, GIF, JPG, DOCX, XLSX, EXE, & More

8. File Extensions and File Types: MP3, GIF, JPG, DOCX, XLSX, EXE, & More

File extensions are used to indicate the format of files so operating systems know what to do with them. Learn why there are so many different file extensions. Also learn about some of the most widely used file extensions.

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