{{fa>pencil?32}} For a circuit you need to control two LEDs, but unfortunately only one digital output is free. The supply voltage of the microcontroller and the board is 5V. LED1 should have a forward voltage $U_{f,1}=2.3V$ (red), LED2 should have a forward voltage $U_{f,2}=2.1V$ (green). - Design a circuit from the existing voltage levels so that both LEDs can be driven. \\ Existing voltage levels: - Supply: $5V$ - Digital output: $5V$, $0V$ or high impedance - Calculate the values for the other necessary components \\ \ \ \ \ \ \ \ \ \ \ \ \ .