stavros

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

Fuzz unplugged

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

Andy

beemerboy

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

BB

stevencotton

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.

stavros

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

MarkO

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