According to the proposed date sheet available on the PTU website, the regular exams of B.Tech.Electronics 7th/8th semester is scheduled as:

12-May-11 E 7&8 Computer Networks CS-402
14-May-11 E 7&8 Optical Fiber Communications EC-404
17-May-11 E 7&8 VLSI Design & Technology EC-406
19-May-11 E 7&8 Industrial Electronics DE-2.1
19-May-11 E 7&8 Wireless Communication Systems & Network DE-2.2 D.E.-II
19-May-11 E 7&8 Bio-Medical Electronics DE-2.3 D.E.-II
19-May-11 E 7&8 Engineering Economics DE-2.5 D.E.-II
21-May-11 E 7&8 Operating System DE-3.1 D.E.-III
21-May-11 E 7&8 Satellite Communications DE-3.3 D.E.-III
21-May-11 E 7&8 Reliability Engg. DE-3.4 D.E.-III
21-May-11 E 7&8 TV Engg. DE-3.5 D.E.-III
21-May-11 E 7&8 Image Processing DE-3.2 D.E.-III

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Disclaimer: We are just providing the information and are not responsible for any error. Kindly check the PTU website regularly for any revision in date sheet.