Resource Management

System Resources

Identifying required resources in a computer system, including primary memory, secondary storage, processor speed, bandwidth, screen resolution, sound processor, graphics processor, cache, and network connectivity.

Mainframe

High-performance computer system with multiple CPUs, large RAM capacity, and high-capacity storage drives, used for large-scale data processing and critical applications.

Servers

Powerful multi-core CPUs, high RAM for multitasking, RAID arrays for data storage, commonly used for hosting websites and managing networks.

PCs

Various CPUs, moderate RAM capacity, HDDs or SSDs for storage, used for general computing tasks and gaming.

Sub-laptops

Low-power CPUs, limited RAM, SSDs for fast storage, for lightweight computing on the go.

Cell phones

Mobile-specific processors, limited RAM, flash storage, used for communication, apps, and multimedia.

Tablets

Mobile processors, moderate RAM, flash storage, for entertainment, browsing, and productivity.

PDAs

Low-power processors, limited RAM, flash memory, for personal organization and basic computing.

Digital cameras

Image processing units, limited internal memory, SD cards for storage, for capturing and storing images.

Limitations of Resources

Consequences of limiting primary memory, secondary storage, CPU speed, CPU cores, connectivity, and user access in a computer system.

Operating System

Manages hardware resources, provides user interface, runs applications, ensures system security, and handles memory, peripherals, and hardware interfaces.

Functions of an Operating System

Resource management, process management, memory management, file management, security, and user interface provision.

Managing Memory

Involves controlling memory allocation, relocation, protection, and sharing for efficient utilization and conflict prevention.

Peripheral Devices

Devices managed by the OS through device drivers and input/output operations.

Hardware Interfaces

Physical connections enabling devices to interact with each other in a computer system.

Techniques in Resource Management

Scheduling, policies, multitasking, virtual memory, paging, interrupt, and polling used by the OS for efficient resource allocation and management.

Abstraction

Process of hiding hardware details from users and applications for simplicity.

Drive Letters

Alphabetic labels assigned to storage devices in Windows OS for identification and access.

JVM (Java Virtual Machine)

Virtual machine enabling computers to run Java programs by interpreting Java bytecode and executing instructions.

Advantages and Disadvantages of Dedicated Operating System

Benefits include optimized performance, enhanced security, tailored features; drawbacks include limited compatibility, higher costs, longer development time, maintenance challenges, and potential lack of support.