The electrical telegraph systems, developed in the early 19th century, used analog electrical signals to sent text messages. In the late 19th century, the wireless telegraphy was developed using radio waves.
sdfsfd
sfdsfd
sfdsf
sdfsfd
sfdsfd
sfdsf
Hello, dear! Beautiful blog post and outfit!
ReplyDeleteCheck my blog here: MY BLOG
Kisses,
Alexandra
Hello!
ReplyDelete