Why is the dollar marked with $?
As we all know, $ stands for U.S. dollars. So how did it come about? One way of saying it is that it is an evolution of the PS superposition. PS is the abbreviation of Pesos, a round coin in the United States during the 18th and 19th centuries. The U.S. government later recognized the $ symbol as a unit of the new currency, the one dollar. When writing, put $ in front of the number. For example, $1 should be written as $1, and $50 should be written as $50.