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4. Draw a 4-word x 1-bit memory array used as lookup table to implement A+B, refer to Fig. 5.52 5. Describe what happens to the wordline and bitline when reading from a bit cell or writing to a bit cell, respectively 4. Draw a 4-word x 1-bit memory array used as lookup table to implement A+B, refer to Fig. 5.52 5. Describe what happens to the wordline and bitline when reading from a bit cell or writing to a bit cell, respectively