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18. Consider a 7-Segment Display decoder: It accepts 4-bit binary numbers as inputs and outputs 7 signals that either turn on or off one of
18. Consider a 7-Segment Display decoder: It accepts 4-bit binary numbers as inputs and outputs 7 signals that either turn on or off one of the specific display segments. The 15 pts displayed numbers appear as shown here: 7-segment display A decoder 57 H998989 Segment a (Sa) is turned on to display the top part of numbers 0, 2, 3, 5, 6, 7, 8, and 9. The following Truth Table displays the required function definition for Sa. We don't care about inputs 10-15. So we can write Sa = m(0,2,3,5,6,7,8,9) + Edc(10,11,12,13,14,15) B D Sa A 0 CD AB 0 0 0 1 00 01 11 10 0 0 0 1 0 00 0 0 1 0 1 mo m1 m3 m2 0 0 1 1 1 0 0 1 O 01 0 m4 m5 m7 m6 0 1 0 1 1 B 0 1 1 0 1 11 m12 m13 m15 m141 0 1 1 1 1 A 0 0 1 10 1 1 0 0 m8 mg m11 m10 0 1 1 Other Values X D Derive the minimal SOP Boolean equation for signal Sa using the K-map. Draw a two-level logic implementation of your equation
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