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View Full Version : Need some Tech computer help...

15-01-2008, 08:23 PM
Hi, Im looking for some help with a few questing im stuck on with my study, If anyone can help would be much appreciated....

1, What is the RS-232 interface on a printer also known as?

2, On an AT Motherboard what is the data bus whidth of an ISA slot?

3, On an ATX Motherboard how wide is a 72-pin SIMM memory slot?


15-01-2008, 08:34 PM
1. Parallel port, usually DB-25 (very rarely not).
2. 16-bit
3. I have no idea, do you mean physical width (as in millimetres)?

15-01-2008, 08:45 PM
RS-232 is a serial port, not parallel.(typing this in wikipedia takes two seconds and you have the answer straightaway)

15-01-2008, 09:32 PM
Meh, I saw printer and that was the first thing that came to mind, since printers use parallel ports >.>

15-01-2008, 09:49 PM
Especially the earlier generations of Apple printers were all serial, and modern day printers use Univeral SERIAL Bus, so hardly all of em ;)

15-01-2008, 10:18 PM
Unfortunately mid-life Apple printers weren't specified in the question and USB is not an R* type interface. IBM PCs used LPT ports for printers and as far as I can remember Serial printers are about as rare as they come (as in practically non-existant)

Apple printers were all parallel printers until 1984. After that, there was a short reign of serial printers up until around 1992 when they started producing SCSI printers as well.