28. The waveform pattern in Figure 8-61 is required. Devise a ring counter, and indicate how it can be preset to produce this waveform on its Q9 output. At CLK16 the pattern begins to repeat. CLKLLU...

Extracted text: 28. The waveform pattern in Figure 8-61 is required. Devise a ring counter, and indicate how it can be preset to produce this waveform on its Q9 output. At CLK16 the pattern begins to repeat. CLKLLU 11 12 13 14 15 16 17 18 19 1 10 i 11 12 i 13 i 14 i 15 Q, 0 1 00010:0:0 o0100 oe () FIGURE 8-61