Answers and Solutions

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half duplex simply one way communication process in which only one person can speak at a time. best example id walkytalkies

in full duplex twoway communication is possible.

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In half duplex only of transmission or receving can be done at a time .

eg. Walkie talkie

In full duplext transmission and receiving can be done simultaneously . (Two way communication)

eg.mobile

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Full-duplex communication between two components means that both can transmit and receive information between each other simultaneously. Telephones are full-duplex systems so both parties on the phone can talk and listen at the same time.

In half-duplex systems, the transmission and reception of information must happen alternately. While one point is transmitting, the other must only receive. Walkie-talkie radio communication is a half-duplex system, this is characterised by saying “over” at the end of a transmission to signify that the party is ready to receive information.

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There are 3 types of communication possible between any two connected devices namely simplex , Half-Duplex and Full-Duplex communication.

Half-duplex communication :- In this, the two devices connected can both transmit and receive data but not at the same time i.e at a time when one device transmits , the other has to receive.The channel is mutually shared. It is like a one lan road with both side traffic, if vehicles are coming from one side the other side need to halt down. Example - communication over walkie-talkies etc.

Full-duplex communication :- In this, devices connected share the channel length spatially i.e both devices can transmit and receive at the same time. It is like a two-lane road in which vehicles can move in both the direction simultaneously. Example - communication over telephone lines etc. 

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Full-duplex communication between two components means that both can transmit and receive information between each other simultaneously. Telephones are full-duplex systems so both parties on the phone can talk and listen at the same time.

In half-duplex systems, the transmission and reception of information must happen alternately. While one point is transmitting, the other must only receive. Walkie-talkie radio communication is a half-duplex system

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In half duplex only of transmission or receving can be done at a time .

eg. Walkie talkie

In full duplext transmission and receiving can be done simultaneously . (Two way communication)

eg.mobile

Answer

In half duplex only of transmission or receving can be done at a time . eg. Walkie talkie

In full duplext transmission and receiving can be done simultaneously . eg. telephone 

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 Half –duplex

"Duplex" simply means you're able to send and receive data (most often the human voice) from the same device whether that be with your phone, 2-way radio, or PC.

Half-duplex devices let you send and receive, but only one-way at a time. If you've ever used a walkie-talkie, then you know what half-duplex conversations sound like. You have to push the TALK button to send your message. But as long as you are holding the TALK key, you can't hear what anyone else is saying. You must release the button to receive.

Full duplex Actually, full duplex is nothing new. In fact, you already know exactly what it sounds like. Your corded or cordless phones are full-duplex devices letting you and your caller speak simultaneously without any dropouts in either one of your voices.

It's when you use a hands-free speakerphone that you really appreciate full duplex. Conventional speakerphones must shut the speaker off when the mic is activated so as not to pick up your caller's voice and transmit it along with yours causing an echo effect. When you speak, you can't hear what your caller is saying. This problem is really compounded if both of you are using conventional speakerphones. A full-duplex device digitizes the signal coming out of its speaker (your caller's voice). It then edits this info out of the signal it's transmitting (your voice) using a built-in digital processor similar to those found in PCs. This eliminates echo effect and more importantly, does away with the on-off mic/speaker dilemma. Full-duplex devices do all of this virtually instantaneously so your calls sound natural and free-flowing. It's this technology that differentiates high-end conferencing systems from ordinary, half-duplex speakerphones.

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Half Duplex is the system in which either data is transmitted or received (any one process at a time). For eg. walkie-talkie Full duplex is the system in which data is transmitted and received simultaneously. For eg. mobile phone 

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