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Q#1 Sequential Circuits GATE EE 2003 MCQ +2 marks -0.66 marks

The shift register shown in Figure is initially loaded with the bit pattern 1010. Subsequently the shift register is clocked, and with each clock pulse the pattern gets shifted by one bit position to the right. With each shift, the bit at the serial input is pushed to the left most position (MSB). After how many clock pulses will the content of the shift register become 1010 again?

3

7

11

15

Explanation:

Output of Gate 2=

Output of Gate 1=

D:\DATA\Rahul\Digital Previous Year\15.jpg

Truth Table

Total number of clock pulse=7

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