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Can someone explain line buffers

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stcogolin

New Member
Hi, I'm a newbie and have built a few circuits interfacing with
the parallel port, basically following other's designs. Can someone
explain to me or indicate where I can find info that explains why
octal line-buffers are necessary for communications with parallel
port and what they exactly do?
 

Nigel Goodwin

Super Moderator
Most Helpful Member
stcogolin said:
Hi, I'm a newbie and have built a few circuits interfacing with
the parallel port, basically following other's designs. Can someone
explain to me or indicate where I can find info that explains why
octal line-buffers are necessary for communications with parallel
port and what they exactly do?

They buffer the signals either in or out of the port. A parallel port is often part of the motherboard, so blowing it could be expensive - it's wise to use buffers so you blow the buffers and not the port.
 
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