GATE NET JRF SET COMPUTER SCIENCE (CS)

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UGC NET DECEMBER 2025 ✅

Read Carefully All These Important Topics for Your Upcoming Ugc NET Examination Dec 2025 Session 😍 All Above Given Topics Are Very Important And Highly Recommended For UGC NET CSE Preparation 😍

❤️😍💎Most Important And Selected Topics For UGC NET DEC 2025 CYCLE COMPUTER SCIENCE - 😍Unit 1 - Discrete Structures and Optimisation 💎Mathematical Logic 💎Sets & Graph Theory 💎Mathematical Induction and Probability 😍Unit 2 - Computer System Architecture 💎Circuits &Data Representation 💎Register Transfer 💎Microprogrammed Control 😍Unit 3 - Programming Languages and Computer Graphics 💎Language Design 💎Data Types 💎Object-Oriented Programming 💎Transformations & Viewing 😍Unit 4 - Database Management Systems 💎SQL & Data Warehousing 💎Normalisation & Fd 💎NoSQL 😍Unit 5 - System Software and Operating System 💎System Software 💎OS & Threads 💎CPU Scheduling 💎Process Management 😍Unit 6 - Software Engineering 💎Software Process Models 💎Scheduling 💎SCM & Software Quality 😍Unit 7 - Data Structures and Algorithms 💎Algorithms & Recurrences 💎Graph Algorithms & Complexity 😍Unit 8 - Theory of Computation and Compilers 💎Context-Free Language 💎Unsolvable Problems & Complexity 💎Regular Language 💎Code Generation & Code Optimisation 😍Unit 9 - Data Communication and Computer Networks 💎Functions of OSI and TCP/IP Layers 💎Mobile Technology & Network & Security 😍Unit 10 - Artificial Intelligence (AI) 💎Artificial Neural Networks (ANN) 💎Genetic Algorithms (GA) 💎Natural Language Processing 💎Knowledge Representation 💎Multi-Agent Systems

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Hope we launching this test series before Ugc NET Dec 2025 Examination 😍🙏 Very Beneficial For Ugc NET Dec Examination 😍🖊 Target Ugc NET 🎯 Test Series By Mr. Sandeep Kumar Assistant Professor, Computer

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💎Modern Computer - 🖊A modern computer is an electronic device that can receive, store, process, and output data. 🖊It's a complex system consisting of hardware components like the central processing unit (CPU), memory, storage devices, input/output devices, and software that enables users to interact with the device. 🔐 Key Characteristics - 🌿Processing Power - Modern computers can perform billions of calculations per second, thanks to advanced processors and high-speed memory. 🌿Storage - They have large internal storage capacity, combined with cloud-based and external storage options, allowing for vast amounts of data to be stored. 🌿Connectivity - Modern computers can connect seamlessly to the internet and other devices, enabling functions like web browsing, video conferencing, and IoT interactions. 🌿Multitasking - They can handle multiple processes simultaneously without significant performance drops, allowing users to run several applications at once. 🌿Energy Efficiency - Modern computers are designed to consume less power while maintaining high performance, achieved through techniques like dynamic voltage and frequency scaling. 👁‍🗨Types of Modern Computers - 🌿Desktop Computers - Stationary computers used at work, home, school, or libraries, easy to upgrade. 🌿Laptop Computers - Portable computers that are battery- or AC-powered, suitable for mobility but less upgradeable. 🌿Tablets and Smartphones - Compact, portable devices that integrate computing and communication capabilities. 🌿Servers - Powerful computers that manage and provide access to resources, data, and applications over networks. 🌿Supercomputers - Extremely powerful computers used for complex simulations, scientific research, and data analysis.

🌺Fifth Generation ( 1980s to Present ) 🖊Main electronic component: based on artificial intelligence, uses the Ultra Large-Scale Integration (ULSI) technology and parallel processing method. 🖊ULSI – millions of transistors on a single microchip 🖊Parallel processing method – use two or more microprocessors to run tasks simultaneously. 🖊Language – understand natural language (human language). 🖊Power – consume less power and generate less heat. 🖊Speed – remarkable improvement of speed, accuracy and reliability (in comparison with the fourth generation computers). 🖊Size – portable and small in size, and have a huge storage capacity. 🖊Input / output device – keyboard, monitor, mouse, trackpad (or touchpad), touchscreen, pen, speech input (recognise voice / speech), light scanner, printer, etc. 🖊Example – desktops, laptops, tablets, smartphones, etc.

🌺Fourth Generatio (1970s- 1980s) 🖊Main electronic component – very large-scale integration (VLSI) and microprocessor. 🖊VLSI– thousands of transistors on a single microchip. 🖊Memory – semiconductor memory (such as RAM, ROM, etc.) 🖊RAM (random-access memory) – a type of data storage (memory element) used in computers that temporary stores of programs and data (volatile: its contents are lost when the computer is turned off). 🖊ROM (read-only memory) – a type of data storage used in computers that permanently stores data and programs (non-volatile: its contents are retained even when the computer is turned off). 🖊Programming language – high level language (Python, C#, Java, JavaScript, Rust, Kotlin, etc.). A mix of both third- and fourth-generation languages 🖊Size – smaller, cheaper and more efficient than third generation computers. 🖊Speed – improvement of speed, accuracy, and reliability (in comparison with the third generation computers). 🖊Input / output devices – keyboard, pointing devices, optical scanning, monitor, printer, etc. 🖊Network – a group of two or more computer systems linked together. 🖊Examples – IBM PC, STAR 1000, APPLE II, Apple Macintosh, etc.

🌺Third Generation (1960s-1970s) 🖊Main electronic component – integrated circuits (ICs) 🖊Memory – large magnetic core, magnetic tape / disk 🖊Programming language – high level language (FORTRAN, BASIC, Pascal, COBOL, C, etc.) 🖊Size – smaller, cheaper, and more efficient than second generation computers (they were called minicomputers). 🖊Speed – improvement of speed and reliability (in comparison with the second generation computers). 🖊Input / output devices – magnetic tape, keyboard, monitor, printer, etc. 🖊Examples – IBM 360, IBM 370, PDP-11, UNIVAC 1108, etc.

🌺Second Generation (1950s-1960s) 🖊Main electronic component – transistor 🖊Memory – magnetic core and magnetic tape / disk 🖊Programming language – assembly language 🖊Power and size – low power consumption, generated less heat, and smaller in size (in comparison with the first generation computers). 🖊Speed – improvement of speed and reliability (in comparison with the first generation computers). 🖊Input/output devices – punched cards and magnetic tape. 🖊Examples – IBM 1401, IBM 7090 and 7094, UNIVAC 1107, etc.

💎Rather than requiring applications to gather data one record at a time by navigating the links, they would use a declarative query language that expressed what data was required, rather than the access path by which it should be found. 💎Finding an efficient access path to the data became the responsibility of the database management system, rather than the application programmer. 💎This process, called query optimization, depended on the fact that queries were expressed in terms of mathematical logic. 💎Codd's paper was picked up by two people at Berkeley, Eugene Wong and Michael Stonebraker. 💎They started a project known as INGRES using funding that had already been allocated for a geographical database project and student programmers to produce code. 💎Beginning in 1973, INGRES delivered its first test products which were generally ready for widespread use in 1979. 💎INGRES was similar to System R in a number of ways, including the use of a "language" for data access, known as QUEL. Over time, INGRES moved to the emerging SQL standard. 💎IBM itself did one test implementation of the relational model, PRTV, and a production one, Business System 12, both now discontinued. 💎Honeywell wrote MRDS for Multics, and now there are two new implementations: Alphora Dataphor and Rel. Most other DBMS implementations usually called relational are actually SQL DBMSs. 💎In 1970, the University of Michigan began development of the MICRO Information Management System based on D.L. Childs' Set-Theoretic Data model. 💎MICRO was used to manage very large data sets by the US Department of Labor, the U.S. Environmental Protection Agency, and researchers from the University of Alberta, the University of Michigan, and Wayne State University. 💎It ran on IBM mainframe computers using the Michigan Terminal System. 💎The system remained in production until 1998.

🎁1960s, navigational DBMS 😍The introduction of the term database coincided with the availability of direct-access storage (disks and drums) from the mid-1960s onwards. 😍The term represented a contrast with the tape-based systems of the past, allowing shared interactive use rather than daily batch processing. 😍The Oxford English Dictionary cites a 1962 report by the System Development Corporation of California as the first to use the term "data-base" in a specific technical sense. 😍As computers grew in speed and capability, a number of general-purpose database systems emerged; by the mid-1960s a number of such systems had come into commercial use. 😍Interest in a standard began to grow, and Charles Bachman, author of one such product, the Integrated Data Store (IDS), founded the Database Task Group within CODASYL, the group responsible for the creation and standardization of COBOL. 😍In 1971, the Database Task Group delivered their standard, which generally became known as the CODASYL approach, and soon a number of commercial products based on this approach entered the market. 😍The CODASYL approach offered applications the ability to navigate around a linked data set which was formed into a large network. Applications could find records by one of three methods: 🎉Use of a primary key (known as a CALC key, typically implemented by hashing) 🎉Navigating relationships (called sets) from one record to another Scanning all the records in a sequential order 😍Later systems added B-trees to provide alternate access paths. Many CODASYL databases also added a declarative query language for end users (as distinct from the navigational API). However, CODASYL databases were complex and required significant training and effort to produce useful applications. 😍IBM also had its own DBMS in 1966, known as Information Management System (IMS). IMS was a development of software written for the Apollo program on the System/360. 😍IMS was generally similar in concept to CODASYL, but used a strict hierarchy for its model of data navigation instead of CODASYL's network model. 😍Both concepts later became known as navigational databases due to the way data was accessed: the term was popularized by Bachman's 1973 Turing Award presentation The Programmer as Navigator. 😍IMS is classified by IBM as a hierarchical database. IDMS and Cincom Systems' TOTAL[broken anchor] databases are classified as network databases. IMS remains in use as of 2014.