DIGITAL ELECTRONICS

http://books.google.co.in/books?id=bftp5ZG8v5kC&printsec=frontcover&dq=digital+electronics&hl=en&ei=U51dTqa1MZDkrAfUpOiMDw&sa=X&oi=book_result&ct=result&resnum=3&ved=0CEUQ6AEwAg#v=onepage&q&f=false

http://books.google.co.in/books?id=GjWFZthZblUC&printsec=frontcover&dq=digital+electronics&hl=en&ei=U51dTqa1MZDkrAfUpOiMDw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDsQ6AEwAA#v=onepage&q&f=false

http://books.google.co.in/books?id=ZhMBR_slRzIC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false

http://books.google.co.in/books?id=FRcvR_tMjxcC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false

http://books.google.co.in/books?id=N6FDii6_nSEC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false