Open-drain outputs can be useful for analog weighting, summing, and limiting as well as digital logic. An open drain terminal is connected to ground when a high voltage (logic 1) is applied to the gate, yet presents a high impedance when a low voltage (logic 0) is applied to the gate.
The End The Gulf of Tonkin Incident August 2nd- The USS Maddox engages three North Vietnamese Torpedo Boats August 4th- USS Maddox and Turner Joy report further engagement in the Tonkin Gulf Gulf of Tonkin Resolution August 7th Congress passes a joint resolution that allows President Johnson to use authority to support the states of Southern Vietnam. This is not a declaration of war.
On August 2, North Vietnamese torpedo boats attacked an American destroyer in the Gulf of Tonkin. Johnson responded by sending in another destroyer. On August 4, the two destroyers reported that they were under attack. This time, Johnson authorized retaliatory air attacks against North Vietnam. He also asked Congress to pass the Gulf of Tonkin Resolution.