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the postal service is a system dedicated to trasnsporting written documents around the world. All shiments through the postal system are called mail.
The postal system was created in 1716 -
The telegraph, a device that uses electrical signals for the transmission of message, was the first means of high-speed communication over long distances.
My grandparents communicated by telegraph in 1835. -
insert your finger into each number to which the hole corresponds. clockwise, turn the hole to the hook mentioned before without detaching your finger. once there, remove your finger and let the disc return to its main position.
my grandparents had only one phone at home. -
this was used to write, they work by turning the wheel until the appropriate letter was centered on the print position on the roller and then the keys are pressed. -
the televisions of before were used with electrical signal, before objects were used that captured moving images this was created in 18884 -
It is a means of communication that is based on the sending of audio signals through radio waves. -
the cameras were used to take pictures and these photographs could be used to make movies.
in 1925 the cameras began to be created. -
the internet was used to search for things but it was not very common as it is currently this was created in 1969 -
The first equipment was programmed mechanically, from having to change the wiring for each operation, through the use of switches of various positions that when changed modified the operation of the computer, to writing a program on punched cards to be read by magnetic rollers.
these computers could already be used with the internet -
People before cell phone use depended on time. They scheduled schedules and assignments to call or wait for calls! Therefore, time and location played an important role in telephone communications before the cell phone.