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soln30b

# soln30b - Exercise 6.1 Prove the De Morgans law(x1 x2 x3 x4...

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1 Exercise 6.1 Prove the De Morgan’s law: Solution: Step 1: Karnaugh map for y=x 1 +x 2 +x 3 +x 4 4 3 2 1 4 3 2 1 ) ( x x x x x x x x 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

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2 Solutions Step 2: Karnaugh map for y Step 3: Group for y Final results: 0 1 4 3 2 1 4 3 2 1 ) ( x x x x x x x x y
3 Exercise 6.2 The sequential control system of a semi-automatic material- processing machine involves three pneumatic cylinders X, Y and Z and other accessories. The home positions of the cylinders are sensed by limit switches x0, y0 and z0 while their extended positions sensed by limit switches x1, y1 and z1. The system is required to perform a sequence of operations described by: X+, Z+, Y+, X-, X+, Z-, Y-, X- with the cylinders originally at their home positions. a) Draw the traverse-timing diagram for this sequence of operations. b)

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soln30b - Exercise 6.1 Prove the De Morgans law(x1 x2 x3 x4...

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