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==Algorithms  & Data Structures ==

<b> Algorithms:</b> 
<ul>
<li>Analysis, Asymptotic notation, Notions of space and time complexity, Worst and 
average case analysis; </li>
<li>Design: Greedy approach, Dynamic programming, Divide-and-conquer; </li>
<li> Tree and graph traversals, Connected components, Spanning trees, Shortest paths; </li>
<li>Hashing, Sorting, Searching. </li>
<li>Asymptotic analysis (best, worst, average cases) of time and space, upper and lower bounds, Basic concepts of complexity classes – P, NP, NP-hard, NP-complete. </li> </ul>
<b> Data Structures: </b> <br>
<ul>
<li> Abstract data types, Arrays, Stacks, Queues </li>
<li> Linked Lists </li>
<li>Trees, Binary search trees, Binary heaps. </li>
</ul>
{| class="wikitable"
! style="color: #f7f7f7; background-color: #3b5998;"|
Book
! style="width: 70%;color:#f7f7f7; background-color: #3b5998;"|
Description
|-
| [http://www.aduni.org/courses/algorithms/index.php?view=cw ''Algorithms'']
Shai Simonson, Aduni.org
| Aduni.org: before you do any other thing, the first thing to do is watch these videos, you won’t believe how awesome Shai is.
|-
|[http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/video-lectures/ ''Introduction to Algorithms'']
Leiserson, OCW.MIT
|One of the lecturers is C. Leiserson, The “L” in CLRS..
|-
| [http://nptel.ac.in/video.php?subjectId=106102064  ''Introduction to Data Structures & Algorithms'' ]
NPTEL
| 
|-
|[https://www.coursera.org/course/algs4partI  Coursera Course]
Kevin Wayne, Robert Sedgewick, Princeton University
| Course and slides
|}

==Databases==
<div>
<ul>
<li> ER-model, Relational model (relational algebra, tuple calculus) </li>
<li> Database design (integrity constraints, normal forms) </li>
<li> Query languages (SQL) </li>
<li> File structures (sequential files, indexing, B and B+ trees) </li>
<li> Transactions and concurrency control </li>

</ul></div>
{| class="wikitable"
! style="color: #f7f7f7; background-color: #3b5998;"|
Book
! style="width: 70%;color:#f7f7f7; background-color: #3b5998;"|
Description
|-
| [https://www.youtube.com/playlist?list=PLyvBGMFYV3auVdxQ1-88ivNFpmUEy-U3M ''DBMS NPTEL PPC - IIT KGP'']
NPTEL
| IIT KGP PPC DBMS lecture is good one
|-
| [http://web.stanford.edu/class/cs145/ ''CS145 Introduction to Databases'' ]
Stanford
|Course and slides for DBMS
|}

==Compiler Design==
<div>
<ul>
<li>Lexical analysis, Parsing </li>
<li> Syntax directed translation, Runtime environments </li>
<li>Intermediate and target code generation, Basics of code optimization. </li>
</ul></div>
{| class="wikitable"
! Book
! style="width: 70%;"|
Description
|-
|[https://www.youtube.com/playlist?list=PLFB9EC7B8FE963EB8&feature=plcp ''CS143 Compilers'' ]
Stanford
|Best notes and assignment for Compiler Course, no video
|-
|[http://web.stanford.edu/class/archive/cs/cs143/cs143.1128/ ''Compilers Stanford'' ]
Alex Aiken, Coursera
| Comprehensive
|}

==Operating Systems==
<div>
<ul>
<li> Processes, Threads, Inter-process communication </li>
<li> Concurrency, Synchronization </li>
<li> Deadlock </li>
<li> CPU scheduling </li>
<li> Memory management and virtual memory </li>
<li> File systems, I/O systems, Protection and security. </li>
</ul></div>
{| class="wikitable"
! Book
! style="width: 70%;"|
Description
|-
| [https://www.youtube.com/playlist?list=PLLDC70psjvq5hIT0kfr1sirNuees0NIbG ''Operating Systems'' ]
P.K.Biswas
| Enough for GATE
|-
|[https://www.youtube.com/watch?v=sjs5PtCsVA4&index=1&list=PLEAFEC6160DADC7AA ''Computer Science 162 - Lecture 1'' ]
UCBerkeley
|
|}




==Theory of Computation==
<div>
<ul>
<li>   Regular languages and finite automata </li>
<li>Context free languages and Push-down automata </li> 
<li>Recursively enumerable sets and Turing machines</li>
<li> Undecidability. </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.aduni.org/courses/theory/index.php?view=cw ''Theory of Computation'' ]
Shai Simonson, Aduni.org
| If you have not seen these videos, don’t do anything go and see the videos immediately, no excuses.
|-
|[http://www.flipkart.com/introduction-theory-computation-2nd-english/p/itmdfcamz8zfkzzz?pid=9788131517505&otracker=from-search&srno=t_1&query=sipser&ref=bb122966-0efa-4f6c-b7b8-9c4b7607cfb3 ''Introduction to Theory of Computation''] 
Sipser
| Sipser is a quick and comprehensive guide. It is recommended to be read after you have grip on the subject.
|-
| [http://www.flipkart.com/introduction-computer-theory-english-2nd/p/itmeyfnuqk6ehnuf?pid=9788126513345&otracker=from-search&srno=t_1&query=cohen+theory&ref=b41541af-5746-464e-8d22-b9dc365801f9 ''Introduction To Computer Theory'']
Cohen
| Cohen can be read if very good detailed analysis is required. SPOON FEEDING !
|-
| [http://www.flipkart.com/introduction-automata-theory-languages-computation-english-3rd/p/itmdwuafje6xhdft?pid=9788131764619&ref=0eea7fe0-1ae2-4a95-a28b-e9ff58db68a5&srno=t_1&otracker=from-search&query=hopcroft ''Introduction to Automata Theory, Languages, and Computation'' ]
Hopcroft
| In most colleges you will find this book as a  Main book , but believe me  within Cohen or Linz, if you read any one of them , Enough!
|}




==CO & Architecture==
<div>
<ul>
<li> Machine instructions and addressing modes</li>
<li> ALU and data-path, CPU control design</li>
<li> Memory interface, I/O interface (Interrupt and DMA mode) </li>
<li> Instruction pipelining </li>
<li> Cache and main memory, Secondary storage. </li>
</ul>
</div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/computer-organization-5e-english-5th/p/itmdwxz8ahzhg7zy?pid=9781259005275&otracker=from-search&srno=t_1&query=computer+organisation+by+carl+hamacher&ref=6ebf9153-d4bb-4f55-a8b4-3a01c49727f6 ''Computer Organization'' ]
Vranesic, Zaky, Hamacher
|
|-
|[http://www.flipkart.com/computer-organization-architecture-designing-performance-english-8th/p/itmey7qwaeuubgg4?pid=9788131732458&otracker=from-search&srno=t_1&query=stallings+william%2C+computer+organization+%26+architecture%2C+pearson+education%2C+8th+ed.%2C+2010&ref=aff593ce-3301-450d-b12c-58babd17b35b ''Computer Organization and Architecture : Designing for Performance'' ]
Stallings
|
|-
| [http://www.groupes.polymtl.ca/inf2610/documentation/ComputerSystemBook.pdf ''Computer Systems: A Programmers perspective'']
| This is a really good book in perspective of architecture as a simple view of how the actual hardware is organised is given. Apart from the classical confusing diagrams, this book has simple ones which is quite clear in its meaning. The explanation for pipeline execution and hazards are really good. This book is no longer in print, but you can get its pdf by clicking in the link provided. Highly recommended if you have time as this covers many of the other CS subjects as well. 
|}




==Computer Networks==
<div>
<ul>
<li> ISO/OSI stack, LAN technologies (Ethernet, Token ring) </li>
<li> Flow and error control techniques, Routing algorithms, Congestion control </li>
<li> TCP/UDP and sockets, IP(v4), Application layer protocols (icmp, dns, smtp, pop, ftp, http)</li>
<li>Basic concepts of hubs, switches, gateways, and routers</li>
<li> Network security – basic concepts of public key and private key cryptography, digital signature, firewalls </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/computer-networks/p/itmdxcfuqyqjryxa?pid=DGBDNY382GZTKGNQ&otracker=from-search&srno=t_1&query=davie+networks&ref=47dcd318-fc8e-4b8a-922a-000ea8ee9b96 ''Computer Networks'']
Peterson, Davie
| Most recommended for GATE
|-
|[http://www.flipkart.com/data-comm-netw-5e-global-ed-english-5th/p/itmdhbyx8cpfhzge?pid=9781259064753&ref=7829042b-d739-4891-a50e-2bbb26b6b223&srno=t_1&otracker=from-search&query=Forouzan+computer+networks ''Data Communication & Networks'']
Forouzan
| Good book with Basics clear
|-
|[http://www.flipkart.com/computer-networks-5th/p/itmdkzrvw2xcanwg?pid=9788131787571&otracker=from-search&srno=t_1&query=computer+networks+tanenbaum&ref=10a83716-8095-4159-bc5b-c32f0f91ca42 ''Computer Netwroks'']
Tanenbaum, Wetherall
| One can not neglect the amazing book by tanenbaum. It contains everything in a very well written way. It is amusing and `it deals with issues in a manner you want to do. If you are starting the subject, go with it. It is not recommended for last time reading. Keep making good notes if you read his book.
|-
|[http://www.flipkart.com/computer-networking-top-down-approach-english-5th/p/itmdatheqysd3cfn?pid=9788131790540&otracker=from-search&srno=t_1&query=computer+networks+by+kurose&ref=d9a4f1e3-0730-4157-9c45-e7fc3d80defb ''Computer Networking: A Top-Down Approach'']
Kurose
|Kurose is best for Almost all fundamental concept with clear figure and very understandable manners
|}




==Programming==
<div>
<ul>
<li> Programming in C </li>
<li> Functions, Recursion </li>
<li> Parameter passing, Scope, Binding </li>
</ul> </div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[https://www.youtube.com/watch?v=_eR4rxnM7Lc&list=PL9D558D49CA734A02&index=4 ''Programming Paradigms'']
Jerry Cain, Stanford
| Doesn't cover the entire GATE syllabus in programming but useful
|-
|[https://www.youtube.com/course?category=University%2FEngineering%2FComputer%2520Science%2FData%2520Structures&list=EC4BBB74C7D2A1049C&feature=edu ''Computer Science 61B - Fall 2006'']
UCBerkeley
|For Data structures
|}




==Digital Logic==
<div>
<ul>
<li>Logic functions, Minimization </li>
 <li> Design and synthesis of combinational and sequential circuits </li>
<li> Number representation and computer arithmetic (fixed and floating point) </li>
</ul>
</div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
| [http://www.flipkart.com/digital-logic-computer-design-english-1st/p/itmdyughsrncfvsg?pid=9788177584097&otracker=from-search&srno=t_1&query=+by+morris+mano&ref=2dc66827-d61c-489b-9270-467f6954e5b4 ''Digital Logic & Computer Design'']
Morris Mano
| No Comment… One and only…

|}




==Information Systems and Software Engineering==
<div>
<ul>
<li>Information gathering, requirement and feasibility analysis data flow diagrams </li>
<li>Process specifications, input/output design, process life cycle </li>
<li>Planning and managing the project, design, coding </li>
<li>Testing, implementation, maintenance. </li>
</ul> </div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/software-engineering-english-6th/p/itmdx925vgduvhzs?pid=9780070701137&otracker=from-search&srno=t_1&query=software+engineering+by+pressman&ref=7a20efc8-6a93-494b-9de1-93e250b26fab ''Software Engineering'']
Pressman
| Just see the GATE topics from this bible. 
|}




==Web technologies==
<div>
<ul>
<li> HTML, XML </li>
<li>Basic concepts of client-server computing </li>
</ul>
</div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://gatecse.in/w/images/0/02/Web-Technologies-Fundamentals-and-HTTP.pptx ''Web Technologies Basics'']
Telerik Academy
| This presentation is enough for GATE. 
|}



== Engineering Mathematics==
===Mathematical Logic=== 
<div>
<ul>
<li>Propositional Logic </li>
<li> First Order Logic </li>
</ul> </div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/mathematical-introduction-logic-english-2nd/p/itmdytr58ffzmpz8?q=MATHEMATICAL+INTRODUCTION+TO+LOGIC+%28English%29+2nd+Edition&as=on&as-show=on&otracker=start&as-pos=p_1&pid=9788131201916 ''Mathematical Introduction to Logic'']
Enderton
| Buy only if needed. The GATE topic is only till first order logic and these questions can be solved just by practising previous year papers. But '''NEVER''' ignore this topic. 
|}

===Combinatory & Probability===
'''Combinatory'''
<div>
<ul>
<li>Permutations, Combinations </li>
<li> Counting, Summation </li>
<li> Generating functions, recurrence relations, asymptotics </li>
</ul></div>
'''Probability'''
<div>
<ul>
<li>Conditional Probability </li>
<li>Mean, Median, Mode and Standard Deviation </li>
<li> Random Variables </li>
<li> Distributions; uniform, normal, exponential, Poisson, Binomial. </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[https://www.youtube.com/playlist?list=PL5BC8D7CFBA5732EA ''Sets, Counting, and Probability'']
Harvard
|Covers the basics
|-
|[https://www.youtube.com/playlist?list=PLvjECquwN5_Emuhi-ISxBOk82-zp-6lTf ''Applied Probability'']
MIT
|Advanced course and topics are mostly above GATE syllabus. 
|}


===Set Theory & Algebra=== 
<div>
<ul>
<li> Sets, Relations, Functions </li>
<li> Groups </li>
<li> Partial Orders, Lattice </li>
<li> Boolean Algebra </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/discrete-mathematics-its-applications-combinatorics-graph-theory-english-7th/p/itmdwxxszhczjrnf?pid=9780070681880&otracker=from-search&srno=t_1&query=discrete+mathematics+and+its+applications+by+kenneth+h.rosen&ref=d9721371-0168-4553-a128-c337b7c0cbe7 ''Discrete Mathematics and Its Applications with Combinatorics and Graph Theory'']
Rosen
| Best book for Discrete Mathematics. Even covers Graph Theory.
|}

===Graph Theory===
<div>
<ul>
<li>Connectivity, spanning trees</li>
<li> Cut vertices & edges </li>
<li> Covering, matching, independent sets </li>
<li> Colouring, Planarity, Isomorphism </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/introduction-graph-theory-english-2nd/p/itmey7qggmkbgqay?pid=9788120321427&otracker=from-search&srno=t_2&query=douglas+west&ref=d299a0d8-f90b-467c-8aa1-8550e79b39b1 ''Introduction to Graph Theory'']
Douglas B. West
|First 4 chapters are important for GATE
|-
|[http://www.flipkart.com/graph-theory-applications-engineering-computer-science-english-new/p/itmdytcjrqqcyxgm?pid=9788120301450&ref=a48bd004-a410-4e6a-9581-570a3f31b5c4&srno=t_1&otracker=from-search&query=graph+theory+narsingh+deo ''Graph Theory With Applications To Engineering And Computer Science''] 
Deo
|Good and concise books. If you have followed this book during bachelors, then it is enough for GATE. 
|}


===Linear Algebra===
<div><ul>
<li>Algebra of matrices, determinants </li>
<li> Systems of linear equations </li>
<li> Eigen values and Eigen vectors </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/higher-engineering-mathematics-english-43rd/p/itmczyhpmhhtqnsa?pid=9788174091956&ref=04f4284d-0b23-4ee9-8ec8-575200059f10&srno=t_1&otracker=from-search&query=bs+grewal+engineering+mathematics ''Higher Engineering Mathematics'']
Grewal
| Grewal's book is sufficient for Linear Algebra in GATE (it is needed for other mathematical subjects)
|-
|[http://www.flipkart.com/linear-algebra-its-applications-english-4th/p/itmey7qhzmragaty?pid=9788131501726&otracker=from-search&srno=t_1&query=gilbert+strang&ref=35d0c899-dc36-4bb1-ae4d-92cf055fbf5e ''Linear Algebra and its Applications'']
Gilbert Strang
| This is the best book for Linear algebra

|}

===Numerical Methods & Calculus===
'''Numerical Methods'''
<div>
<ul>
<li>LU decomposition for systems of linear equations </li>
<li> Numerical solutions of non-linear algebraic equations by Secant, Bisection and Newton-Raphson Methods </li>
<li> Numerical integration by trapezoidal and Simpson’s rules </li>
</ul></div>

'''Calculus'''
<div>
<ul>
<li> Limit, Continuity & differentiability </li>
<li> Mean value theorems </li>
<li> Theorems of integral calculus, evaluation of definite & improper integrals</li>
<li> Partial derivatives, Total derivatives, maxima & minima </li>
</ul></div>

{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/higher-engineering-mathematics-english-43rd/p/itmczyhpmhhtqnsa?pid=9788174091956&ref=04f4284d-0b23-4ee9-8ec8-575200059f10&srno=t_1&otracker=from-search&query=bs+grewal+engineering+mathematics ''Higher Engineering Mathematics'']
Grewal
| Enough for GATE
|-
|[http://ocw.mit.edu/resources/res-18-001-calculus-online-textbook-spring-2005/textbook/ ''Calculus'']
Gilbert Strang
|If you have time, go through the book and videos in this link. 
|}

==General Aptitude==
===Numerical Ability===
<div>
<ul>
<li>Numerical computation </li>
<li> Numerical estimation </li>
<li> Numerical reasoning and data interpretation </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/quantitative-aptitude-competitive-examinations-english-17th/p/itmdytga2sgpggmg?pid=9788121924986&ref=fa36fcb4-078c-4280-b9c8-d849701e4a98&srno=t_1&otracker=from-search&query=agrewal+aptitude ''Quantitative Aptitude For Competitive Examinations'']
Aggarwal
| Those having good aptitude skills can do without this book. But do refresh the problems in progression, cost-selling price etc. Questions in aptitude are easy but scoring in this topic is very important to the final GATE score. 
|}

===Verbal Ability===
<div>
<ul>
<li>English grammar, sentence completion </li>
<li> Verbal analogies, word groups </li>
<li> Instructions, critical reasoning and verbal deduction </li>
</ul></div>
{|class="wikitable"
!Book
! style="width: 70%;"|
Description
|-
|[http://www.flipkart.com/modern-approach-verbal-reasoning-english-2nd/p/itmdytg92gkwmzdg?pid=9788121905527&otracker=from-search&srno=t_1&query=verbal+reasoning+books&ref=29294827-5bc4-42b0-bd5e-2baeb1313ed8 ''A Modern Approach to Verbal Reasoning'']
Aggarwal
|If your English is good enough no need to buy this book. But I recommend giving a little importance to this topic. 
|}
Book	Description
Algorithms Shai Simonson, Aduni.org	Aduni.org: before you do any other thing, the first thing to do is watch these videos, you won’t believe how awesome Shai is.
Introduction to Algorithms Leiserson, OCW.MIT	One of the lecturers is C. Leiserson, The “L” in CLRS..
Introduction to Data Structures & Algorithms NPTEL
Coursera Course Kevin Wayne, Robert Sedgewick, Princeton University	Course and slides
Book	Description
DBMS NPTEL PPC - IIT KGP NPTEL	IIT KGP PPC DBMS lecture is good one
CS145 Introduction to Databases Stanford	Course and slides for DBMS
Book	Description
CS143 Compilers Stanford	Best notes and assignment for Compiler Course, no video
Compilers Stanford Alex Aiken, Coursera	Comprehensive
Book	Description
Operating Systems P.K.Biswas	Enough for GATE
Computer Science 162 - Lecture 1 UCBerkeley
Book	Description
Theory of Computation Shai Simonson, Aduni.org	If you have not seen these videos, don’t do anything go and see the videos immediately, no excuses.
Introduction to Theory of Computation Sipser	Sipser is a quick and comprehensive guide. It is recommended to be read after you have grip on the subject.
Introduction To Computer Theory Cohen	Cohen can be read if very good detailed analysis is required. SPOON FEEDING !
Introduction to Automata Theory, Languages, and Computation Hopcroft	In most colleges you will find this book as a Main book , but believe me within Cohen or Linz, if you read any one of them , Enough!
Book	Description
Computer Organization Vranesic, Zaky, Hamacher
Computer Organization and Architecture : Designing for Performance Stallings
Computer Systems: A Programmers perspective	This is a really good book in perspective of architecture as a simple view of how the actual hardware is organised is given. Apart from the classical confusing diagrams, this book has simple ones which is quite clear in its meaning. The explanation for pipeline execution and hazards are really good. This book is no longer in print, but you can get its pdf by clicking in the link provided. Highly recommended if you have time as this covers many of the other CS subjects as well.
Book	Description
Computer Networks Peterson, Davie	Most recommended for GATE
Data Communication & Networks Forouzan	Good book with Basics clear
Computer Netwroks Tanenbaum, Wetherall	One can not neglect the amazing book by tanenbaum. It contains everything in a very well written way. It is amusing and `it deals with issues in a manner you want to do. If you are starting the subject, go with it. It is not recommended for last time reading. Keep making good notes if you read his book.
Computer Networking: A Top-Down Approach Kurose	Kurose is best for Almost all fundamental concept with clear figure and very understandable manners
Book	Description
Programming Paradigms Jerry Cain, Stanford	Doesn't cover the entire GATE syllabus in programming but useful
Computer Science 61B - Fall 2006 UCBerkeley	For Data structures
Book	Description
Sets, Counting, and Probability Harvard	Covers the basics
Applied Probability MIT	Advanced course and topics are mostly above GATE syllabus.
Book	Description
Introduction to Graph Theory Douglas B. West	First 4 chapters are important for GATE
Graph Theory With Applications To Engineering And Computer Science Deo	Good and concise books. If you have followed this book during bachelors, then it is enough for GATE.