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Old 14. Dec 2011, 08:47 AM   #11 (permalink)
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Quote:
Originally Posted by Remah View Post
The cable you show is a Centronics Parallel 36-pin cable.

While one end uses a DB-25 male connector it is not a serial cable.

The laptop connector will be a DB-9F connector which is serial.

So you need a serial to parallel converter.

......
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Old 14. Dec 2011, 02:42 PM   #12 (permalink)
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Might look something like this?

images.jpg
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Old 14. Dec 2011, 09:32 PM   #13 (permalink)
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Yes, what is that called, please?
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Old 14. Dec 2011, 09:38 PM   #14 (permalink)
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Thanks MC, I didn't have time to find an example when I posted so your picture should help genacide.

genacide,
You need a serial to parallel converter.
The printer end of the cable needs to be Centronics Parallel Printer male.
The laptop ends needs to DB-9M (M is for male).

I'll explain the terms.

Serial to Parallel converter
If the laptop has a 9 pin serial interface then it outputs a serial signal. Serial interfaces send the information on one wire in a sequence one after another, ie serially. USB is the newer version of serial communications. RS232 is the old method used by the first IBM PCs which will be what you're laptop uses with a 9-pin interface.

The printer expects parallel input where several wires each carry the information at the same time. Parallel cables are not used nowadays because of difficulties keeping the separate signals synchronized when speeds are increased.

So you need a serial to parallel converter to convert the serial communications coming out of the laptop into the parallel communications expected by the printer.

The connector for the laptop will be DB-9M
The laptop has a 9-pin connector in what is called a D shell - it looks like a D. The technical term for it is DB-9.

Connectors can have pins or holes. Pins are called male (M). Holes are called female (F). The laptop DB-9 connector will be female because they don't usually put pins on the outside of a laptop that could be dropped breaking the pins. The pins are used on cables that are more easily replaced.

So the female laptop connector will be DB-9F and the cable that connects to it will be DB-9M.

If the laptop connection has 15 pins then it will not be a serial connection. A DB-15 connector is used for video signals (VGA or SVGA monitors or screens).

The connector for the printer will be Centronics Parallel
The main printer connector from the 80s to the new millenium has been the Centronics parallel connector. As for the laptop, the printer will almost always have the female connector and the cable will use the male version (with a central ridge having 18 pins on each side).

So the printer end of the cable needs to be Centronics Parallel Printer male.
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Old 14. Dec 2011, 09:49 PM   #15 (permalink)
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There are a sea of adapters and Im drowning, this is why Im confused. So, its called a serial to parallel converter?
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Old 15. Dec 2011, 12:13 AM   #16 (permalink)
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Yes there is a sea of adapters. So I'll give you examples from one vendor.

You will get better results on Google with "serial parallel adapter" than "serial parallel converter" which mainly gets the electronic chips used to do the conversions.

The first useful search result for "serial parallel adapter" is
http://www.computercablestore.com/Se..._D_PID911.aspx

I opened the page and selected the category "Adapters Connectors & Hardware > Adapters & Couplers > Modular Serial and Parallel Adapters > Parallel Adapters > DB9 to DB25 Parallel Adapters" at the top of the page to see what other options there are:
http://www.computercablestore.com/DB..._catID699.aspx

This list includes adapters to work with your existing printer cable so we need a 25-pin female connector, ie DB-25F, at one end.

You will need to confirm whether the connection on your laptop is male or female. If you're not sure then post a photo here.

If is male then you need a DB-9F:
"9-9F25F Serial / Parallel Adapter - DB9 Female to DB25 Female"
http://www.computercablestore.com/Se..._D_PID911.aspx

If it is female then you need a DB-9M:
"AD-09M25F Serial / Parallel Adapter - DB9 Male to DB25 Female"
http://www.computercablestore.com/Se..._PID50025.aspx

If you want to deal with another site then post the link here and I'll have a look.
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Old 15. Dec 2011, 12:21 AM   #17 (permalink)
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Quote:
Originally Posted by genacide View Post
There are a sea of adapters and Im drowning, this is why Im confused. So, its called a serial to parallel converter?
Don't bother with technical terms. You can browse a online store, search for one of cables like mentioned ones and ask the seller if it's going to work with your printer.
Also, you'll gonna need drivers:

http://h10025.www1.hp.com/ewfrf/wc/s...&product=60426

Please remember, as a non native connectivity solution (emulate) maybe you need additional drivers for the adapter. Generally it comes with cable in a mini disc .
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Old 15. Dec 2011, 12:41 AM   #18 (permalink)
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Don't bother with technical terms. You can browse a online store, search for one of cables like mentioned ones and ask the seller if it's going to work with your printer.
Be aware that you may not get much help from an online retailer for a $2 adapter.

Quote:
Originally Posted by 4goTTen21 View Post
Yes, drivers are usually the bigger issue with old printers and new versions of windows. But HP are very good at providing compatible drivers.

Quote:
Originally Posted by 4goTTen21 View Post
Please remember, as a non native connectivity solution (emulate) maybe you need additional drivers for the adapter. Generally it comes with cable in a mini disc .
No, there is no emulation involved.

The driver software doesn't care what port (serial, parallel, LAN, IP) it communicates with the printer through. The hardware in the adapter handles the signal conversion so the printer has a parallel connection and the computer a serial connection.
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Last edited by Remah; 15. Dec 2011 at 12:45 AM. Reason: Spelling and format - no change to text
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Old 15. Dec 2011, 01:00 AM   #19 (permalink)
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Heres my printer cord wire.

Im grateful for all the help , but now I dont know what to buy.

If it was you what would you buy?

The comps a 9 prong, and the one to the right is supposed to plug into comp.
I dont know if male or what.
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Old 15. Dec 2011, 01:15 AM   #20 (permalink)
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Quote:
Originally Posted by Remah View Post

No, there is no emulation involved.

The driver software doesn't care what port (serial, parallel, LAN, IP) it communicates with the printer through. The hardware in the adapter handles the signal conversion so the printer has a parallel connection and the computer a serial connection.
The adapter set parameters as parity and baud as standard used. Not all hardware communicative with such parameters, there's a case when you have to adjust it. It's true that generally it works by default, but not always. About help from online store.... yeah sometimes responsibility is overtaken by avarice. If the seller has a little of common sense and responsibility will help him as a potential customer . You mentioned price ($2) humm, Genacide, avoid buying very cheap hardware and related if you want to avoid problems too Chinese people build good things suspect when it's so cheap.
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