Electronics and Communication Engineering

Hi buddy, Among the 'circuit branches' ECE brings you the closest to a computer Science degree (and I speak on behalf of the typical degree offered in India) in terms of imparted course-work and related projects. ECE and CS degrees offered in India often converge in the later semesters with subjects such as computer vision, image processing, operating systems or database engineering. In most cases and quite unfortunately however the study of algorithms - a crucial component and possibly the most important subject in a computer Science programme is often omitted from an ECE degree. This is possibly the (only) Achilles heel for many ECE students aspiring to become top programmers but enough practice can compensate well enough. If you are an ECE graduation and do not have algorithms in your curriculum, grab a copy of Introduction to Algorithms (Introduction to Algorithms) today and start solving as many exercises as you can at the end of each chapter! Find the book too tedious? No problem. Complement your study with these lectures (Video Lectures | Introduction to Algorithms (SMA 5503) | Electrical Engineering and Computer Science | MIT OpenCourseWare) delivered by the same people involved in writing the book (the internet is awesome these days isn't it? :D)
For a master's programme in CS you will have to demonstrate reasonable proficiency and relevant coursework in (any of) data structures, algorithms, operating systems and programming languages - which often are prerequisites for most graduates school courses in computer Science. Also choosing a master's 'track' or specialisation that comes close to a computer engineering degree (which is often confused for a computer Science degree by students from India, partly because of the similarity in titles and in reality requires a background in electrical / electronic engineering) may give a decent chance of admission into a CS programme. For all practical purposes an ECE graduate has pretty good chances of studying CS in graduation school if most of the pre-requisites are in order. Hope it helps!