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Introduction to Operating Systems: Hardware Needs Software to Work

Explore the relationship between hardware and software in operating systems, including the physical components of a computer, instructions that direct hardware, PC software, BIOS and OS, and applications software.

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Introduction to Operating Systems: Hardware Needs Software to Work

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  1. Chapter 1 Introduction to Operating Systems

  2. Hardware Needs Softwareto Work • Hardware • Physical components of the computer (monitor, keyboard, memory chips, hard drive, etc.) • Software • Set of instructions that directs hardware to accomplish a task

  3. Hardware Needs Softwareto Work

  4. Software • Programs written by programmers that instruct computers to perform specific task. • PC Software • Firmware (BIOS) • Operating Systems (OS) • Applications software • BIOS and OS • Control the computer when it is first turned on

  5. Software 2.-Passes control to OS Startup BIOS Operating System 1.-Performs startup tasks 3.-Performs more startup tasks Hardware • BIOS and OS • Control the computer when it is first turned on

  6. O. S User Application Software Operating System Device Drivers BIOS H a r d w a r e • During Operation • O.S. is serving as a middle layer between • app software and hardware • O.S. controls the allocation and use hardware

  7. O. S. Components This component tracks every file in the system The kernel's primary purpose is to manage the computer's resources and allow other programs to run and use these resources.

  8. O. S

  9. O. S (Tasks) Applications Operating System Kernel

  10. Single and Multi-User O. S.

  11. Single and Multi-User O. S.

  12. Network O. S. (NOS) • Network operating systems (NOS) coordinate the activities of multiple computers across a network. • The network operating system acts as a director to keep the network running smoothly. • The two major types of network operating systems are: Peer-to-Peeror Workgroup model Client/Server

  13. Network O. S. (NOS) • Peer-to-Peer Examples: • AppleShare and • Windows for Workgroups • Client/Server Examples: • Novell Netware • and • Windows NT Server • .

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