16 replies to this topic

[sshields]

I read in the posts about an aid used in remembering the Com, and LPT, I/O addresses, I added an additional string to the string i read. the Original string was. 323232 FFEE77 888888, I Added 434375 To my notes. this gave me.

Port-------I/O-----IRQ

Com 1-----3F8-----4
Com 2-----2F8-----3
Com 3-----3E8-----4
Com 4-----2E8-----3
LPT1-------378-----7
LPT2-------278-----5

Hope this helps some one else.

[James]

Nice tip    I have linked to this permanently from the tips section at:
http://www.proprofs.com/certification/comp...als/index.shtml
Its called "A+ Tip: Tip On Remembering IRQs -2 "

[umedkaule]

I read in the posts about an aid used in remembering the Com, and LPT, I/O addresses, I added an additional string to the string i read. the Original string was. 323232 FFEE77 888888, I Added 434375 To my notes. this gave me.

Port-------I/O-----IRQ

Com 1-----3F8-----4
Com 2-----2F8-----3
Com 3-----3E8-----4
Com 4-----2E8-----3
LPT1-------378-----7
LPT2-------278-----5

Hope this helps some one else.

Really help ful tahnks

[jedrekmaly]

Something that I learned from my Hardware professor:

To memorize the COM ports and their IRQs, just remember that the ODD number for the COM port goes with an EVEN IRQ number, and an EVEN number goes with an ODD number:

Com 1-----3F8-----4
Com 2-----2F8-----3
Com 3-----3E8-----4
Com 4-----2E8-----3

Edited by jedrekmaly, 07 May 2007 - 03:36 PM.

[Jlallison3]

This is an aweome tip! Thanks

[rashley]

Great ideas.Thanks,rashley

[magicman]

Yeah thanks

[LuckyOne]

Helps a new student a LOT...thanks!!

[swordfrog]

i have had a hard time with this...thanks

[m0rph3u5]

are these even on the newer tests? even if they aren't, very nice tip

[grabate]

are these even on the newer tests? even if they aren't, very nice tip

I haven't read of anyone who has encountered these in the new tests but it's easy enough to remember with that tip anyway.

[jonathan510]

I didn't realize they were going to be testing on LPT and COM ports. Thanks for the help.

[Rivner00]

Thanks for the great tip.

[acur042]

Would you gaurantee this would definately come on the exam?

[FSegarra]

Thanks for the tip. Seemed to be having trouble with these. This site is fantastic. Positive I will pass my A+ on the first try.

[lpdustin]

Thanks for the tips!

[whouk]

Excellent post