. Using an adder, draw a circuit to increment or decrement an unsigned 6 PT 4-bit number, X = {X3 X2 X1 X0}. Let X connect to the adder A inputs and let the result be N = {N3 N2 N1 N0}. Ignore the carry-out. Let ID be the increment or decrement signal (0 = increment, 1 = decrement). Hint: Do not use the carry-in input.

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?