(a) Draw the clock circuit of astable mode using a 555 timer. (10 Marks) (b) If the value of the timing components are normalized, RA=RB=10 and CA=1F Compute the following: (i) Mark-to-space ratio (M/s) (ii) Percent duty cycle (% pw/T) (iii) Pulses per second (pps) (iv) Space width (sw) (2 Marks) (2 Marks) (2 Marks) (2 Marks) (v) Pulse width (pw) (2 Marks)