Construct the block diagram and signal flow graph of the discrete time systems whose input-output relations are described by the following difference equations. a) y(n) = 0.7 x(n) + 0.7 x(n - 1) b) y(n) = 0.4 y(n – 1) + x(n) – 3 x(n – 2)

Use the C-Strip material cards to fill in each blank with the correct abbreviation by first computing the sum in the parentheses and putting that answer in the first blank.  Then add once more to get the answer (L + D) +W =  + W =  (R + B) +W =  + W =  (R + W) +D =  + D =  (L + Y) +R =  + R =

An example of an unplanned open is:  an open switch  a corroded battery cable  a light  a blown fuse