Scenario: You are to design synchronous and asynchronous circuits that will allow the following requirements to be met. Tasks: 1. Packet number checking A synchronous sequential machine is to have a single input line and a single output line. The circuit is to receive messages of 4-bit words coded in binary (least significant bit first). The purpose of the circuit is to detect whether the number coming in is a prime number (divisible by only itself and 1). Thus, the output is to become 1 whenever a 4-bit word does represent a valid prime number. At the end of each word the machine is to return to the reset starting state. Steps: 1) Draw a State Diagram (Mealy) and check for redundancies 2) Then assign binary State Identifiers. 3) Make a Next State Truth Table (NSTT) 4) Select a bistable type 5) Determine expressions for the bistable inputs 6) Determine expressions for the outputs 2. Monitoring System A monitoring system sends 1s positive going pulses to a device to ensure that it is operating correctly. The device will respond by lowering its normally high line as soon as it receives the pulse then raising the line again within the 1s if working correctly. If the device line doesn’t respond correctly or respond at all then an alarm must occur. 1) Carry out a design for the asynchronous system that will realise the requirements up to the point where internal conditions are designated to the lines in the merged table. 2) Explain what the designer would have to do to ensure the system was hazard free and the output was as short as possible.

## Scenario: You are to design synchronous and asynchronous circuits that will allow the following requirements to be met. Tasks: 1. Packet number checking A synchronous sequential machine is to have a single input line and a single output line. The circuit is to receive messages of 4-bit words coded in binary (least significant bit first). The purpose of the circuit is to detect whether the number coming in is a prime number (divisible by only itself and 1). Thus, the output is to become 1 whenever a 4-bit word does represent a valid prime number. At the end of each word the machine is to return to the reset starting state. Steps: 1) Draw a State Diagram (Mealy) and check for redundancies 2) Then assign binary State Identifiers. 3) Make a Next State Truth Table (NSTT) 4) Select a bistable type 5) Determine expressions for the bistable inputs 6) Determine expressions for the outputs 2. Monitoring System A monitoring system sends 1s positive going pulses to a device to ensure that it is operating correctly. The device will respond by lowering its normally high line as soon as it receives the pulse then raising the line again within the 1s if working correctly. If the device line doesn’t respond correctly or respond at all then an alarm must occur. 1) Carry out a design for the asynchronous system that will realise the requirements up to the point where internal conditions are designated to the lines in the merged table. 2) Explain what the designer would have to do to ensure the system was hazard free and the output was as short as possible.

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Perception checking – 1000 words Apply the perception checking process to at least 3 different individuals Write a paper including each of the following in some way: (They need not be in this order) A brief description or outline of the basic steps in the perception checking process A detailed description of your experience in at least 1 of the applications of the process A brief mention of the other applications A summary of how it worked for you–what you learned and how you think it might apply in your life As with all writing assignments in this class, Write using the active voice wherever possible Develop a good structure with opening and closing statements and supporting material Pay attention to spelling, grammar, sentence and paragraph structure Write in the most interesting way you can

## Perception checking – 1000 words Apply the perception checking process to at least 3 different individuals Write a paper including each of the following in some way: (They need not be in this order) A brief description or outline of the basic steps in the perception checking process A detailed description of your experience in at least 1 of the applications of the process A brief mention of the other applications A summary of how it worked for you–what you learned and how you think it might apply in your life As with all writing assignments in this class, Write using the active voice wherever possible Develop a good structure with opening and closing statements and supporting material Pay attention to spelling, grammar, sentence and paragraph structure Write in the most interesting way you can

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