Dear Friends,
Following are the books listed that may help in preparing for GATE(CS).

• Discrete Mathematics by C L Liu (Nothing should be missed from the book)
• Introduction to Automata, Languages and Computation theory by John hopcroft, jeffery ullman and Rajiv Motwani (two books in GCET library, chapter 11 can be ommited )
• Introduction to Compiler Design by Aho(first 7 chapters do not miss LALR parser)
• Linkers and Loaders by John R Levine(1 copy in GCET library- read only introductory chapters)
• Data structures( I dont remember the exact name) by Mark Allen Weiss (3 copies in GCET library) Some variants of data structures like splay trees can be omitted
• Computer Architechture by William stallings (plz read RISC CISC and pipelining thoroughly) book by hamacher is also good.
• OS and Computer Networks by Tanenbaum (The things generally covered in the syllabus is sufficient)
• Propositional logic and first order logic (a must read , i dont have idea about any specific book but i can give some tutorial slides) this topic is much important from GATE point of view
• Digital Circuits by Morris Mano(contents covered in the syllabus is more than enough)
• Sharpen your C,C++ skills before going for GATE.