hello all
i am doing a project on microprocessors and i need some help from you guys.
i cant find info on the definition of....."data buffer".
can you please help?

thank you in advance
Stav

http://www.stupidfool.org/perl/docs/...ml#DESCRIPTION

Andy :D

stavros, you ever thought of doing a different course???

BB:)

Err the link is to a generic Perl module which wont help that much unless you know what a buffer is beforehand :)

A buffer is just a temporary store for data, usually fixed length (hence "buffer overflow" exploits), before it will be used for the task at hand. Buffers are used anywhere where a lot of data may be coming in often and the process on the other end can't deal with it as soon as it comes in.

Let's say you're ssh'ed into a remote machine over a link with high latency, your typing will be faster than what you can see on the screen. Your keypresses keep coming even though you stopped typing a minute ago because it's all stored in a buffer.

In the case of a micrprocessor it could be buffering anything, from memory addresses that have been used recently to data that's read from external sources such as a PCI card.

Buffering generally speeds things up, of course it can have the opposite effect if your buffer is too large.

Steve.

thank you guys!!!!
beemerboy...what do you mean????

I find that www.whatis.com is a superb site for this sort of question. Here's the definition for buffer. :D