Recently you had an appointment for passport form submission in Agargaon. In the passport office’s
biometric acquiring chamber, only 4 people are allowed in a queue while maintaining a three feet distance
between them. There is a yellow line in front of the chamber to mark it as a no crossing. If more than 2
people cross the line at the same time an alarm goes off. Each awaiting applicant has one digital token with
a sensor to detect their presence in the chamber. The tokens are labelled A, B, C and D.
Your task is to:
i. Outline the necessary steps (in the correct sequence) of the standard procedure to design a digital
system for the alarm circuit and design the system based on them. Show the outlined steps, which
will trigger the alarm. Implement the system with CMOS logic. Show flow-chart, truth-table,
logic equations, functional block diagram, logic diagram (gate-level), circuit diagram (MOS level) and other relevant steps, if necessary.eee
