Answer Happy

CO3 Formulate solutions of a complex engineering problem with conflicting requirements by applying information, concepts and procedures in engineering fundamentals of digital logic and circuits at gate and transistor level. P.a.3.C3 The ignition activation system of a car is attached to a digital system. The activation system turns on if the following conditions are met. The driver seat is occupied, and the driver seatbelt is fastened. The driver seat is occupied, and the driver seatbelt is fastened and the passenger seat is occupied and the passenger seat-belt is fastened. There are appropriate sensors present for detecting the above. Sensor for driver seat is A and sensor for driver seatbelt is B. The sensor for passenger seat is C and the sensor for the passenger seatbelt is D. If those 2 conditions are not met then an alarm goes off. Your task is to: i. Outline the necessary steps in correct sequence of the standard procedure to design a digital system for alarm circuit and design the system. Also show the outlined steps, which will trigger the alarm and implement the system with CMOS logic. ii. The human audible ranges from 20Hz - 20kHz. However, any sound below 250Hz is considered to be disturbingly low pitched and any sound above 4500Hz is considered to be disturbingly high pitched. Design the alarm timer circuit with a frequency of P5 Hz and a duty cycle of Q% [where P= 26 and Q = 74). However, if P5 Hz is not within soothing hearing limits, take frequency, f=400Hz. Choose the capacitor value from the given list based on the suitability of your requirements. (C = 50uF/250uF/470uF) iii. State the limitations of this developed system and explain the effect of increasing the frequency above 4500Hz.