Question

Which system is used to convey information by means of Visual Signals? O Telegraph
O Punching Machine
O Semaphore
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Answer 1

Answer:

Semaphore

Explanation:

A 'semaphore telegraph', also called a 'semaphore line', 'optical telegraph', 'shutter telegraph chain', 'Chappe telegraph', or 'Napoleonic semaphore', is a system used for conveying information by means of visual signals, using towers with pivoting arms or shutters, also known as blades or paddles.

Answer 2

Answer:

semaphore

Explanation: