An operating system (OS) is software that manages computer hardware resources and provides common services for computer programs. The OS acts as an intermediary between users and the computer hardware. Modern computers consist of processors, memory, disks, printers, and input/output devices that all need to be managed by the OS. The main functions of an OS include providing a user interface, allowing users to run programs, managing hardware devices, organizing file storage, and allocating processor and memory resources. OSes also provide security, error handling, and accounting services. Common types of OSes include single-user and multi-user systems, as well as single-tasking and multi-tasking OSes. Utilities like backup software, antivirus
This presentation gives a brief introduction on the following topics:
Definition
Objectives of Operating System
Structure of Operating System
Need for Operating Systems
OS Components and Functions
OS Services
Types of Operating Systems
Examples of Operating Systems
This presentation was in respect to present operating system as product , as it tells about the general operating systems and how it started and how they are projected as product to market.
The components of an operating system all exist in order to make the different parts of a computer work together. All user software needs to go through the operating system in order to use any of the hardware, whether it be as simple as a mouse or keyboard or as complex as an Internet component.
An operating system is a program that acts as an interface between the user and the computer hardware and controls the execution of all kinds of programs.
This Tutorial will provide you information on working of operating system. Main topics are following and further sub-topics are discussed in detail.
1. Kernel Architecture.
2. Initialization of operating system.
3. Process of operating system.
4. Management in operating system.
5. File system.
6.Security in operating system.
7.Interface in operating System.
Operating System definitions and about system calls
Operating System Services
User and Operating System-Interface
System Calls
Types of system calls
System Programs
Basics of Operating Systems Definition – Generations of Operating systems – Types of Operating Systems, OS Service, System Calls, OS structure: Layered, Monolithic, Microkernel Operating Systems – Concept of Virtual Machine
This presentation gives a brief introduction on the following topics:
Definition
Objectives of Operating System
Structure of Operating System
Need for Operating Systems
OS Components and Functions
OS Services
Types of Operating Systems
Examples of Operating Systems
This presentation was in respect to present operating system as product , as it tells about the general operating systems and how it started and how they are projected as product to market.
The components of an operating system all exist in order to make the different parts of a computer work together. All user software needs to go through the operating system in order to use any of the hardware, whether it be as simple as a mouse or keyboard or as complex as an Internet component.
An operating system is a program that acts as an interface between the user and the computer hardware and controls the execution of all kinds of programs.
This Tutorial will provide you information on working of operating system. Main topics are following and further sub-topics are discussed in detail.
1. Kernel Architecture.
2. Initialization of operating system.
3. Process of operating system.
4. Management in operating system.
5. File system.
6.Security in operating system.
7.Interface in operating System.
Operating System definitions and about system calls
Operating System Services
User and Operating System-Interface
System Calls
Types of system calls
System Programs
Basics of Operating Systems Definition – Generations of Operating systems – Types of Operating Systems, OS Service, System Calls, OS structure: Layered, Monolithic, Microkernel Operating Systems – Concept of Virtual Machine
Presentació del projecte: Realitats i mites de l'aïllament a causa d'internet"
Per a l'assignatura Competències en TIC en Psicologia a la Universitat Oberta de Catalunya.
Supply and demand,the law of demand,the law of supply,equilibrium,shift in demand, shift in supply, Advance Business Consulting, miami, fort lauderdale, http://mba4help.com
Dispatches From The New Economy: The Five Faces Of The On-Demand EconomyIntuit Inc.
From people determined to be their own boss, to those embracing the flexibility to do something they love, to workers finding a replacement for a traditional job – people working in the on-demand economy are just about as diverse as the labor market itself. A new report from Intuit Inc. and Emergent Research shows that there are a broad range of motivations – and differing levels of satisfaction – among five distinct groups of on-demand workers:
The Business Builders – primarily driven by the desire to be their own boss. They represent 22 percent of on-demand workers.
The Career Freelancers – happily building a career through independent work. They represent 20 percent of on-demand workers.
The Side Giggers – looking to find financial stability by supplementing existing income. They represent 26 percent of on-demand workers.
The Passionistas – looking for the flexibility to do something they love. They represent 18 percent of on-demand workers.
The Substituters – replacing a traditional job that is no longer available. They represent 14 percent of on-demand workers.
Methodology
A total of 4,622 workers who find work opportunities via the platforms provided by the participating partner companies completed an online survey between September 11 and October 1, 2015. The results were weighted to reflect the proportion of workers in each of the following segments: Drivers/Delivery, Online Talent Marketplaces and Field Service/Onsite Talent. The weights were developed using earlier survey work that sized the on-demand economy. The largest weighted share of on-demand worker respondents from any single company is 16%, with most partner companies providing less than 10% of the respondents.
Operating system basics provides new comers in IT to help understanding basic concepts of operating systems and errors, programs, manage hardware devices
Functions of Operating Systems:
Types of Operating Systems:
Real-Time Operating Systems
Single-User/Single-Tasking Operating Systems
Single-User/Multitasking Operating Systems
Multi-User/Multitasking Operating Systems
User Interface
Graphical User Interface (GUI)
Command-Line Interface
Running Programs
Managing Hardware
hey guys n gallllls.....hope u lll find this valuable. Dis is parpared using Discovering Computers. email me @shahid.mohana@gmail.com if u find any mistake, Thanxxx
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
GridMate - End to end testing is a critical piece to ensure quality and avoid...ThomasParaiso2
End to end testing is a critical piece to ensure quality and avoid regressions. In this session, we share our journey building an E2E testing pipeline for GridMate components (LWC and Aura) using Cypress, JSForce, FakerJS…
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
3. Operating System
• An Operating System is a program that acts
as an intermediary/interface between a user
of a computer and the computer hardware.
• Managing all these varied components
requires a layer of software – the
Operating System (OS).
4. A modern computer consists of
• One or more processors
• Main memory
• Disks
• Printers
• Various input/output devices.
5. • Control/execute user/application programs.
• Handling Input/output Operations
• Manipulation of file system
• Make the computer system convenient to use.
• Ease the solving of user problems.
• Use the computer hardware in an efficient manner.
• Error detection and handling
• Resource allocation
• Accounting
• Information and Resource protection
Operating System goals Or Service
6. Functions of Operating Systems
• Provide a user interface
• Run programs
• Manage hardware devices
• Organized file storage
• Processor Management
• Storage (Memory) Management
• Information Management
Major Function
7. Part Of Operate System
An Operating System has two part:-
1. Kernel
2. Shell
The kernel is responsible for interacting with hardware
and the shell is responsible for interacting with the user
Shell Command.com
Kernel IOS.SYS MSDOS.SYS
Hardware
User 1 User 2 User 3
8. Types of Operating Systems
Single user/Single tasking OS
One user works on the system
Performs one task at a time
MS-DOS and Palm OS
Take up little space on disk
Run on inexpensive computers
Single user/Multitasking OS
User performs many tasks at once
Most common form of OS
Windows XP and OS X
Require expensive computers
Tend to be complex
Multi user/Multitasking OS
Many users connect to one computer
Each user has a unique session
UNIX, Linux, and VMS
Maintenance can be easy
Requires a powerful computer
9. Types of Operating Systems
Time Sharing operating system
Time Shearing technic
If the time elapses, CPU shift over to the next job waiting & the
previous Program is put to wait
Interactive OS
Interactive in nature
Provide GUI interface
Easy interaction
Real-time operating system
Very fast small OS
Built into a device
Respond quickly to user input
MP3 players, Medical devices
11. Providing a User Interface
• User interface
– How a user interacts with a computer
– Require different skill sets
12. Providing a User Interface
• Graphical user interface (GUI)
– Most common interface
– Windows, OS X, Gnome, KDE
– Uses a mouse to control objects
– Uses a desktop metaphor
– Shortcuts open programs or documents
– Open documents have additional objects
– Task switching
– Dialog boxes allow directed input
14. Providing a User Interface
• Command line interfaces
• Or
• Command User Interface
– Older interface
– DOS, Linux, UNIX
– User types commands at a prompt
– User must remember all commands
– Included in all GUIs
16. Running Programs
• Many different applications supported
• System call
– Provides consistent access to OS features
• Share information between programs
– Copy and paste
– Object Linking and Embedding
17. Managing Hardware
• Programs need to access hardware
• Interrupts
– CPU is stopped
– Hardware device is accessed
• Device drivers control the hardware
18. Organizing Files and Folders
• Organized storage
• Long file names
• Folders can be created and nested
• All storage devices work consistently
19. Enhancing an OSUtilities
– Provide services not included with OS
– Goes beyond the four functions
– Firewall, anti-virus and compression
– Prices vary
Backup software
Archives files onto removable media
Ensures data integrity
Most OS include a backup package
Many third party packages exist
Anti-virus software
Crucial utility
Finds, blocks and removes viruses
Must be updated regularly
McAfee and Norton Anti-Virus
Firewall
Crucial utility
Protects your computer from intrude
Makes computer invisible to hackers
Zone Labs is a home firewall
Cisco sells hardware firewalls
Intrusion detection
Often part of a firewall package
Announces attempts to breach security
Snort is a Linux based package
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Teaching Tip
File and folder storage is covered in chapter 6.
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Insider information
The first commercial GUI was the Xerox Star.
Teaching Tip
There are several types of dialog boxes. Any errors are displayed in a dialog box. This box is system modal - it requires a response before returning to the OS. Save and print boxes are application modal - The box must be dealt with before returning to the application. However, other OS tasks can be performed.
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Teaching tip
Demonstrate the command line interface in Windows by running cmd. In the command line interface use ping and ipconfig as commands that cannot be run in the GUI.
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Teaching tip
Most students have never encountered a link. I use MS Excel and MS Word to link. Create and save a simple spreadsheet in Excel. Copy the spreadsheet to the clipboard. Open MS Word and paste-link the spreadsheet. Save the MS Word document. Then change and save the spreadsheet in Excel. The word document is automatically updated.
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Discussion point
The mouse uses an interrupt. Many users will move the mouse while waiting for the CPU to finish a task. What does moving the mouse do to the current process?
Teaching tip
Discuss what can happen when the wrong driver is installed on a computer.
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Discussion point
With Windows XP and SP2, Microsoft has included a firewall and pop-up blocker both typically considered utility software. In the near future, the core services provided by an OS may include security features.