Operating System the complete course of Operating Systems

Explain the process concept in operating systems, showing how a program becomes a process with a program counter and registers, and memory layout and lifecycle states.

Explain the components of a process control block (PCB), including process state, process id, program counter, CPU registers, scheduling information, memory management data, accounting information, I/O state, and open files.

Explore how a process, which typically has a single thread of execution, can run multiple threads in modern operating systems to achieve parallelism on multicore systems.

Illustrates how Linux represents each process with the task_struct in the kernel, covering state, scheduling, memory, and I/O fields, plus ready and wait queues and CPU schedulers.

Explore how operating systems create, manage, and terminate processes, including parent and child relationships, process trees, and identifiers, with lifecycle control via fork, exec, and exit.

Learn binary counters built from flip-flops, including a reptile counter, and see how a two-bit design powers a traffic light controller from 0 to 3 to red, amber, and green.

Explore the foundations of information communication technology by examining hardware, software, and network building blocks. Identify how cpu, ram, input devices, operating systems, and application software shape our digital worlds.

Trace the journey of information communication technology from early visual writing and writing systems to the digital era, highlighting printing, telegraph, telephone, broadcasting, the internet, AI, IoT, and social media.

Explore the difference between system software and application software and how they work together, with system software running the computer and operating systems enabling it, while applications perform tasks.

Explore CPU, RAM, hard disk, SSD, motherboard, power supply, and peripherals, and learn how input and output devices keep the computer running.

Discover the core concept of cloud computing, its advantages, and how remote servers and internet access enable data storage and software delivery over the internet by cloud providers.

Explore how ICT transforms education, business, health, government, and agriculture by enabling online learning, e-commerce, AI-powered diagnostics, robotic surgery, digital voting, and smart farming.

Explore distributed systems, covering resource sharing, load balancing, reliability, and the differences between network and distributed operating systems, with data and process migration concepts.

Explore network structure, including local area networks, wide area networks, and topologies such as star and ring. Understand domain name system, ip addressing, and routing strategies enabling interconnection.

Discover the seven-layer ISO network model, from physical to application, with emphasis on peer-layer communication, addressing, routing, framing, and error detection.

Explore how software enables hardware to run and how the operating system manages multitasking, memory, disk storage, and a hierarchical file system with a graphical user interface.

Explain the daily duties of a desktop support engineer, including installing and maintaining hardware and software, and remote troubleshooting. Onboard new staff, monitor performance, and coordinate with vendors.

Explore wireless networks, including wireless lans and wifi connectivity, base stations, and home networks, and review tcp/ip and osi reference models with core protocols.

Learn memory management fundamentals, including CPU fetch cycles, loading data from storage into memory and cache, and hardware protections enforcing per-process memory using base and limit registers.

Learn how address binding maps program addresses to memory locations, using compile-time, load-time, and execution-time strategies, including relocation, absolute code, and dynamic binding.

Explore how the memory management unit translates virtual addresses to physical addresses at runtime using relocation and base registers, enabling dynamic loading, linking, and memory protection.

Explore how cloud computing delivers services over the internet, stores data, and reduces IT costs. Learn virtualization, public/private/hybrid clouds, and IaaS, PaaS, SaaS, plus AI trends.

Learn to uninstall apps in Windows by selecting the program, clicking uninstall, confirming, and checking that the app is completely deleted from the hard disk.

Learn how to check and install printers on desktop applications, including local, USB, and network printers, configure ports, select printers, set defaults, and troubleshoot.

Learn to run fragmentation on a system by analyzing disks, selecting a partition, and starting fragmentation to analyze and fragment files across the hard disk.

Run disk cleanup on Windows to remove unwanted files, empty the recycle bin, and perform file system cleanup across C, D, and E partitions.

Learn to personalize a Windows desktop using the control panel, adjusting background, display, calendar and clock, currency, and taskbar placement and behavior, with tips to cancel changes if you're unsure.

Learn to create and manage Windows user accounts through the control panel, choosing between standard and administrator roles, setting passwords, changing names and pictures, and deleting accounts.

Explore what structured data is, its well defined schema and data models, and how databases and spreadsheets store, organize, and query rows and columns for analytics, ai, and machine learning.

Explore how demand paging loads pages on demand in a virtual memory system and how page replacement algorithms like first in, first out and optimal manage memory during page faults.

Learn how operating systems allocate frames to multiple processes using frame allocation algorithms, including equal and proportional schemes, and how the working set model guides dynamic page replacement.