2. Design a logic circuit that controls an elevätor door in a tnree-story building. The circuit has four inputs. M is a logic signal that indicates when an elevator is moving (M=1) or stopped (M=0). F1, F2 and F3 are floor indicator signals that are normally LOW, and they go HIGH only when the elevator is positioned at the level of that particular floor. For example, when the elevator is lined up level with the second floor, F2=1 and F1=F3=0. The circuit output is the OPEN sigmal which is normally LOW and is to go HIGH when the elevator door is to be opened.

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. Design a logic circuit that controls an elevator door in a three-story building. The circuit
has four inputs. M is a logic signal that indicates when an elevator is moving (M=1) or stopped (M=0).
F1, F2 and F3 are floor indicator signals that are normally LOW, and they go HIGH only when the
elevator is positioned at the level of that particular floor. For example, when the elevator is lined up
level with the second floor, F2=1 and F1=F3=0. The circuit output is the OPEN signal which is
normally LOW and is to go HIGH when the elevator door is to be opened.

2. Design a logic circuit that controls an elevätor door in a tnree-story building. The circuit
has four inputs. M is a logic signal that indicates when an elevator is moving (M=1) or stopped (M=0).
F1, F2 and F3 are floor indicator signals that are normally LOW, and they go HIGH only when the
elevator is positioned at the level of that particular floor. For example, when the elevator is lined up
level with the second floor, F2=1 and F1=F3=0. The circuit output is the OPEN signal which is
normally LOW and is to go HIGH when the elevator door is to be opened.
Transcribed Image Text:2. Design a logic circuit that controls an elevätor door in a tnree-story building. The circuit has four inputs. M is a logic signal that indicates when an elevator is moving (M=1) or stopped (M=0). F1, F2 and F3 are floor indicator signals that are normally LOW, and they go HIGH only when the elevator is positioned at the level of that particular floor. For example, when the elevator is lined up level with the second floor, F2=1 and F1=F3=0. The circuit output is the OPEN signal which is normally LOW and is to go HIGH when the elevator door is to be opened.
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