In November 1781, John Hanson became the first President of the United States in Congress Assembled, under the Articles of Confederation. Many people have argued that John Hanson, and not George Washington, was the first President of the United States, but this is not quite true.
Even and odd mode impedances of a coupled microstrip line. actually I find the reason when you use differential port, the impedance you get is twice the odd mode impedance, whereas if you use common port, the impedance is half the even mode impedance. 1 members found this post helpful.
In even parity the parity bit is used to ensure that the total number of one bits in the byte is always even. On the other hand in odd parity the parity bit is employed to ensure that the total number of one bits is odd. The sender sets the parity before transmission and the receiver checks it on receipt, and strips it if necessary.