Digit keys +5 V 1 kg For switch bounce Q >T OS ō tp-20 ms Pull-up resistor for each input 74LS147 decimal to-BCD encoder CLK K CLA Q CLEAR 0₂ MSB 0₂ Ō₁ ā LSB +5 V X 21k0 J CLK K CLAY O To CLR inputs of Q₂-Q₁ J PRE Z CLK K Z D Q₁ CLK D CLK CLK D D D D To decoder/drivers and displays BCD code for MSD D Qs CLK Q₂ CLK CLK CLK Q₁ CLK CLK Q₂ Q₂ CLK Q₁ CLK Qo CLK A Second MSD LSD The keyboard circuit of is designed to accept a three digit decimal number. What would happen if four dig keys were activated (e.g., 3095)? Design the necessary logic to be added to this circuit so that after three digits have been entered, any additional digits will be ignored until the CLEAR key is depressed. In other words, if 3095 is entered on the keyboard, the output registers will display 309 and will ignore the 5 and any subsequent digits until the circuit is cleared.
Protection System
A system that protects electrical systems from faults by isolating the problematic part from the remainder of the system, preventing power from being cut from healthy elements, improving system dependability and efficiency is the protection system. Protection devices are the equipment that are utilized to implement the protection system.
Predictive Maintenance System
Predictive maintenance technologies are designed to assist in determining the state of in-service equipment so that maintenance can be scheduled. Predictive maintenance is the application of information; proactive maintenance approaches examine the condition of equipment and anticipate when it should maintain. The purpose of predictive maintenance is to forecast when equipment will fail (depending on a variety of parameters), then prevent the failure through routine and corrective maintenance.Condition monitoring is the continual monitoring of machines during process conditions to maintain optimal machine use, which is necessary for predictive maintenance. There are three types of condition monitoring: online, periodic, and remote. Finally, remote condition monitoring allows the equipment observed from a small place and data supplied for analysis.
Preventive Maintenance System
To maintain the equipment and materials on a regular basis in order to maintain those running conditions and reduce unnecessary shutdowns due to unexpected equipment failure is called Preventive Maintenance (PM).
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