Refer to the counter circuit of Figure 5-48 and answer the following:

(a) If the counter starts at 000, what will be the count after 13 clock pulses? After 99 pulses? After 256 pulses?

(b) If the counter starts at 100, what will be the count after 13 pulses? After 99 pulses? After 256 pulses?

(c) Connect a fourth J-K FF (X₃) to this counter and draw the state transition diagram for this four-bit counter. If the input clock frequency is 80 MHz, what will the waveform at X₃ look like?

Figure 5-48

Transcribed Image Text:

Qo J *All PRE and CLR are HIGH Q₁ Clock pulses 0 Q₂ Count Q₂Q₁Q0 CLK K 0 0 0 Q₂ Q₂ TOLK234 ப Toi 1 T I 1 OCLK T J I K 1 1 Q₁ I I (b) Q₁ (a) 5 6 7 8 9 10 11 him vi CLK K Qo ão Input clock pulses LL..... 1 1 000 001010 011 100 101 110 111 000 001 010100 .. 1 1