(a) Figure 1 shows a simple copy machine, a stop signal, S, is to be generated to stop the machine operation and energize an indicator light whenever either of the following conditions exist: (1) there is no paper in the paper feeder tray or (2) the two microswitches in the paper path are activated, indicating a jam in the paper path. The presence of paper in the feeder tray is indicating by a HIGH at logic signal P. Each of the microswitches produces a logic signal (Q and R) that goes HIGH whenever paper is passing over the switch to activate it. (i) Determine the truth table for the copy machine for the input are P, Q and R and the output is S. Feeder Tray Sensor 5V Logic Circuit 1 kn R 1 kN Figure 2
(a) Figure 1 shows a simple copy machine, a stop signal, S, is to be generated to stop the machine operation and energize an indicator light whenever either of the following conditions exist: (1) there is no paper in the paper feeder tray or (2) the two microswitches in the paper path are activated, indicating a jam in the paper path. The presence of paper in the feeder tray is indicating by a HIGH at logic signal P. Each of the microswitches produces a logic signal (Q and R) that goes HIGH whenever paper is passing over the switch to activate it. (i) Determine the truth table for the copy machine for the input are P, Q and R and the output is S. Feeder Tray Sensor 5V Logic Circuit 1 kn R 1 kN Figure 2
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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answer question a.(i) only
Transcribed Image Text:(a) Figure 1 shows a simple copy machine, a stop signal, S, is to be generated to stop
the machine operation and energize an indicator light whenever either of the
following conditions exist: (1) there is no paper in the paper feeder tray or (2) the
two microswitches in the paper path are activated, indicating a jam in the paper path.
The presence of paper in the feeder tray is indicating by a HIGH at logic signal P.
Each of the microswitches produces a logic signal (Q and R) that goes HIGH
whenever paper is passing over the switch to activate it.
(i) Determine the truth table for the copy machine for the input are P, Q and R and
the output is S.
Feeder Tray
Sensor
5V
Q
Logic
S
Circuit
1 kN
R
1 kN
Figure 2
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