bsnl summer training report
World's Products
Television What? The transmission of visual images and accompanying sound through electrical and sound waves. Who? John Logie Baird was a Scottish engineer.
Tele
How telephones work humanities
Technology 2
History of-communications-1221763652963426-9
Technology – Grade 7 Communications History Timeline.
How have they changed over time? LETS SEE!. Who invented the telephone Alexander Graham Bell, a Scottish born inventor, is the person most widely credited.
Computer Club Cycle 2
