The circuit of Fig. 3.5B is used 8 times over to connect 8 switches to 8 mbed digital input. The pull-up resistors have a value of 10 kU and are connected to the mbed supply of 3.3 V. What current is...

The circuit of Fig. 3.5B is used 8 times over to connect 8 switches to 8 mbed digital

input. The pull-up resistors have a value of 10 kU and are connected to the mbed

supply of 3.3 V. What current is consumed due to this circuit configuration when all

switches are closed simultaneously? If this current drain must be limited to 0.5 mA, to

what value must the pull-up resistors be increased? Reflect on the possible impact of

pull-up resistors in low-power circuits.