John, The way I understand it, is that it only changes the pixel if it needs it. It does not refresh at all in the same way as a crt. As you say the crt beams all the lines one after another, the tft only changes a pixel when it needs changing. If I remember correctly Tom's Hardware has an article on it which will explain it a lot better than me.
Tony. -----Original Message----- From: John Richard Smith [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 26, 2003 1:47 PM To: [EMAIL PROTECTED] Subject: Re: [newbie] Dell TFT 17"Flat Screen I see, so in regards to TFT's it's not a case then of a beam of electrons scanning the screen top left to botton right so many times a second ( CRT of 85Mhz = 85 refershed scans per second) but a question of how many times a pixel is electronically swithced on and off electronically, that is by a circuit behind that pixel ? So a TFT with a refresh rate of 16ms is being switched on and off, 16/1000of a second each time. I guess as time goes on that time will decrease some as technology improves. Yes, I think Dell merely badge someone elses make don't they, they buy in large orders at a time at best prices and badge them, and sometimes they get a bad deal, and sell the shipment off quickly to a retailer for a knockdown price. That is why I was suspicious in the first place, and came to the list, because I have extremely limited experience with these devices. Seems like I will have to keep my old CRT's a while longer yet. John Tony S. Sykes wrote: >John, > >I am sure Dell sell rebranded monitors anyway (correct me if I am >wrong). So you need to try and find out who the original manufacturer >is. I've got a Hitachi 17" 1280x1024 with a 16ms refresh rate. It is a >lot sharper than crt's. Mine cost a little more about £400 but it was >the top of the range in the 16ms bracket (6 months ago). You only need >that fast a response if your gaming (and I do). The faster the response >the less ghosting you get (response is the time it takes for the pixel >to turn off and back on again, the system does not refresh in the same >sense as a crt). There is no flicker on tft's like crt's so don't worry >about that. I think they are a lot better (less power hungry too). > >Thanks, > >Tony. > >-----Original Message----- >From: John Richard Smith [mailto:[EMAIL PROTECTED] >Sent: Friday, August 22, 2003 5:11 PM >To: NEWBIE 1 >Subject: [newbie] Dell TFT 17"Flat Screen > > >OK, so this is an offer from a UK supplier and I asked them what >resolution is it capable of. They replied, > >Its native resolution is 1280 x 1024. It'll go higher with interpolation >but the image quality suffers. TFTs aren't like CRTs in that respect >because the screen is constructed from a grid of pixels of dimensions >1280 x 1024. > >So this means in effect the best resolution is 1280 x 1024, right ? > >Well that is what I'm used to, and the price is right, though I would >dearly of liked a 19" for the same money. > >Question , > > >How much would you have to pay in the states for a 19" flat screen with >at least 1280 x 1024 resolution and is that the same in reality as a >regular CRT monitor of the same resolution ? > >Who has the experience to say ? >because I don't. > >John > > > -- John Richard Smith [EMAIL PROTECTED] -+-+-+-+-+-+-+- Business Computer Projects - Disclaimer -+-+-+-+-+-+-+- This message, and any associated attachment is confidential. If you have received it in error, please delete it from your system, do not use or disclose the information in any way, and notify either Tony S. Sykes or the postmaster <mailto:[EMAIL PROTECTED]> immediately. The contents of this message may contain personal views which are not necessarily the views of Business Computer Projects Ltd., unless specifically stated. Whilst every effort has been made to ensure that emails and their attachments are virus free, it is the responsibility of the recipient(s) to verify the integrity of such emails. Business Computer Projects Ltd BCP House 151 Charles Street Stockport Cheshire SK1 3JY Tel: +44 (0)161 355-3000 Fax: +44 (0)161 355-3001 Web: http://www.bcpsoftware.com <http://www.bcpsoftware.com/>
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