for example ,the international call for help is sent with these signals
You would say in like this
Three dots stand for the letter S and tree dashes stand for the letter O. When this SOS signal is sent, it means it means that someone is in trouble and needs help.
Before telephones morse's system was used for rapid communication in europe and america. Wooden pols carrying wires set up so the eletrical signals could be sent over the wires from one place to another. One person would tap out the code while a person in another place would listen to the message ,write code down ,and translate it into letters and words. This telegraph system was widely used during the 1800