Simplex,Half Duplex & Full Duplex

[sheem]

What is Simplex, Half-Duplex & Full-Duplex?

Simplex

Simplex is one direction. A good example would be your keyboard to your CPU. The CPU never needs to send characters to the keyboard but the keyboard always sends characters to the CPU. In many cases, Computers almost always send characters to printers, but printers usually never send characters to computers (there are exceptions, some printers do talk back). Simplex requires only one lane (in the case of serial).

Half-Duplex

Half-Duplex is like the dreaded "one lane" road you may have run into at construction sites. Only one direction will be allowed through at a time. Railroads have to deal with this scenario more often since it's cheaper to lay a single track. A dispatcher will hold a train up at one end of the single track until a train going the other direction goes through. The only example I could think of for Half-Duplex is actually a Parallel interface. Even though parallel is eight lanes, data travels through the lanes in the same direction at the same time but never in both directions at the same time. The IEEE-1284 allows printers to send messages to the computer. The printer cannot send these messages while the computer is sending characters but when the computer stops sending characters, then the printer can send messages back. It's kind of like some roads that head into downtown. In the morning, they're one way roads, allowing traffic to go into downtown. In the evening their one way roads, allowing traffic to head out of downtown. The only advantage that Half-Duplex would have is the single lane or single track is cheaper then the double lane or double track.

Full-Duplex

Full-Duplex is like the ordinary two-lane highway. In some cases, where traffic is heavy enough, a railroad will decide to lay a double track to allow trains to pass in both directions. In communications, this is most common with networking. Our fiber optic hubs have two connectors on each port, one for each lane of a two-lane roadway. Full-Duplex fiber is two cables bundled or tied together to form the two-lane roadway. In 100Base-TX, the two lanes are housed in the same jacket. RS232 was also designed to handle Full-Duplex but some of our short haul modems and converters give the user the option to go Half-Duplex or Simplex to reduce the number of conductors needed to connect between them.

[Masood]

Re: Simplex,Half Duplex & Full Duplex

Waaaaaaaaah meri behna waaaaaaaah ( aisi waah ki hai keh phephrey bahir aaney ko hain :lol).

Sheem koi tareef nahin karoon ga - just excellent

[Withoutsoul]

Re: Simplex,Half Duplex & Full Duplex

hmmmmmmmmmmmmm nice

[Muhammad Khalil]

Re: Simplex,Half Duplex & Full Duplex

wow shemmmmmmmm really its Great Info

[Spy009]

Re: Simplex,Half Duplex & Full Duplex

Simplex : One way

Half Duplex : Divert way

Full Duplex : Parallel

[sheem]

Re: Simplex,Half Duplex & Full Duplex

Waaaaaaaaah meri behna waaaaaaaah ( aisi waah ki hai keh phephrey bahir aaney ko hain :lol).

Sheem koi tareef nahin karoon ga - just excellent

:khi: nahi bhai phephron ko sanbhal k rakhein kafi kaam k hote hain :lol

acha ji na karein taref waise yeh jo excellent hai yeh kis mai atta hai :khi:

[sheem]

Re: Simplex,Half Duplex & Full Duplex

hmmmmmmmmmmmmm nice

thank you :phool:

[sheem]

Re: Simplex,Half Duplex & Full Duplex

mere to sar ke oopar se mikal gaii baat

ooo hoo roo nahi yaar

actually yeh computer parhne wale bachon k liye hai :khi:

yeh 3 communcations k way hai :wk

[sheem]

Re: Simplex,Half Duplex & Full Duplex

wow shemmmmmmmm really its Great Info

thank you khalil bhai :phool:

[sheem]

Re: Simplex,Half Duplex & Full Duplex

Simplex : One way

Half Duplex : Divert way

Full Duplex : Parallel

:mm: