Your aid is needed in developing the next-generation automatic headlight control system for Fjord Motors. You...
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Your aid is needed in developing the next-generation automatic headlight control system for Fjord Motors. You must design an FSM that monitors the current ambient light level, provided to your FSM as a 2-bit unsigned number L, and automatically turns the headlights on/off through an output H (H=1 means the headlights are on). Your design should turn the headlights on whenever the light level L has been 1 or less for two consecutive cycles, and should tum the headlights off whenever the light levelL has been 2 or more for two consecutive cycles (remember than L is a 2-bit unsigned number, hence ranges from 0 to 3). 1. Complete the abstract state transition diagram below by adding transitions labeled as DARK and LIGHT from each state. These labels correspond to L<2 and L2 2, respectively. LIGHT DAY JOFF LIGHTER JON DARKER NIGHT JOFF /ON DARK 2. Now choose a representation for the states. The 'DAY" state should use S;So = 00. If possible, choose bit pattems such that all transitions change only one state bit rather than changing both state bits. 3. Write a truth table for the output H in terms of the current state S,Sp, and a next-state table for the next state bits S,* and So* in terms of the ambient light level L= L,Lo and the current state S1So- 4. Copy the truth table and next-state table from part 3 into separate K-maps (one for H and one for each next-state variable). 5. Use the K-maps from part 4 to find expressions for each output and next-state variable with minimal area. (Minimize each variable independently-do not try to share gates for implementations.) You must consider both minimal SOP and minimal POS solutions, but you should only circle the better of the two choices (SOP or POS) on your K-maps and write the corresponding expressions when handing in your homework. 6. For the luxury model of Fjord's new vehicle, the driver has a control knob to adjust the automatic headlights' light-level threshold. This knob produces an 8-bit unsigned number T. The light sensor L has also been upgraded to produce an 8-bit unsigned value (instead of a 2-bit value). The values L and T are fed into an 8-bit unsigned comparator that produces a signal X whenever L<T. In other words, X=1 when L <T, and X-0 when L2 T. Explain how to integrate your FSM design with the comparator for the luxury version of the vehicle. Hint: You should not need to change your design's structure. Your aid is needed in developing the next-generation automatic headlight control system for Fjord Motors. You must design an FSM that monitors the current ambient light level, provided to your FSM as a 2-bit unsigned number L, and automatically turns the headlights on/off through an output H (H=1 means the headlights are on). Your design should turn the headlights on whenever the light level L has been 1 or less for two consecutive cycles, and should tum the headlights off whenever the light levelL has been 2 or more for two consecutive cycles (remember than L is a 2-bit unsigned number, hence ranges from 0 to 3). 1. Complete the abstract state transition diagram below by adding transitions labeled as DARK and LIGHT from each state. These labels correspond to L<2 and L2 2, respectively. LIGHT DAY JOFF LIGHTER JON DARKER NIGHT JOFF /ON DARK 2. Now choose a representation for the states. The 'DAY" state should use S;So = 00. If possible, choose bit pattems such that all transitions change only one state bit rather than changing both state bits. 3. Write a truth table for the output H in terms of the current state S,Sp, and a next-state table for the next state bits S,* and So* in terms of the ambient light level L= L,Lo and the current state S1So- 4. Copy the truth table and next-state table from part 3 into separate K-maps (one for H and one for each next-state variable). 5. Use the K-maps from part 4 to find expressions for each output and next-state variable with minimal area. (Minimize each variable independently-do not try to share gates for implementations.) You must consider both minimal SOP and minimal POS solutions, but you should only circle the better of the two choices (SOP or POS) on your K-maps and write the corresponding expressions when handing in your homework. 6. For the luxury model of Fjord's new vehicle, the driver has a control knob to adjust the automatic headlights' light-level threshold. This knob produces an 8-bit unsigned number T. The light sensor L has also been upgraded to produce an 8-bit unsigned value (instead of a 2-bit value). The values L and T are fed into an 8-bit unsigned comparator that produces a signal X whenever L<T. In other words, X=1 when L <T, and X-0 when L2 T. Explain how to integrate your FSM design with the comparator for the luxury version of the vehicle. Hint: You should not need to change your design's structure.
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