Question

Attach Multisim screenshot  A device has four inputs: ECG, respiration, Mean Arterial Blood Pressure and oxygen saturation. Design a circuit that will display these inputs, one at a time for 10 seconds duration for each input. Draw a neat circuit diagram from Multisim. Label your inputs.

Answer 1

When you have a clock with a higher frequency, we can divide its frequency using an asynchronous counter, or we can produce 555 timer clock frequency of any duration.

Consider the time period of 10 sec and basic digital electronic components are available, such as Negative-edge Triggered T Flip-Flop and mux.

The frequency applied to the 2-bit synchronous counter is 0.1 Hz as time period is 10 sec so after 10 secs the count vale is increased by 1.

ECG signal is assigned to count value 0 (00)

Respiration signal is assigned to count value 1 (01)

Mean arterial blood pressure signal is assigned to count value 2 (10)

Oxygen saturation signal is assigned to count value 3 (11)

This loop will continue until the clock signal is stopped.