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.
U.S. Involvement in the Vietnam War: the Gulf of Tonkin and Escalation, 1964. In early August 1964, two U.S. destroyers stationed in the Gulf of Tonkin in Vietnam radioed that they had been fired upon by North Vietnamese forces. In response to these reported incidents, President Lyndon B. Johnson requested permission from the U.S. Congress to increase the U.S. military presence in Indochina.