About This Chapter
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
Browse the table below to see what you'll learn in each lesson in this chapter.
|Systems Software: Utility Software, Device Drivers, Firmware & GUI||Look inside your computer and learn about utility software, drivers and more.|
|Command Line Interface: Commands, Parameters & Options||Learn about the command line interface, a tool for issuing commands to your computer.|
|Computer Operating Systems: Managing Hardware and Software Resources||See the basics of computer operating systems and learn how they help you interact with your computer.|
|Systems Security: Firewalls, Encryption, Passwords & Biometrics||Learn different types of systems security, including the ubiquitous passwords and less common biometrics.|
|What Is Computer Management? - Maintenance & Tools||See an overview of computer management processes and the tools that IT professionals use.|
|Communication Services: Integrated & Unified Technologies||Learn what communication services are and discover two types of technologies used.|
|IT Software Services: Hardware Maintenance||Find out how IT professionals service computer hardware.|
|Units of Measurement: Megapixels, Kilobytes & Gigahertz||Learn how a megapixel compares to a pixel and other common units of measurement in computer systems.|
|Files Systems: FAT, NTFS, HFS+ and FFS||Explore 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, & More||Learn about the file types you use everyday and discover some new extensions with which you may be less familiar.|
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.
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.
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.
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.
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.
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.
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.
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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