NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/comp/sys/mac/hardware/27154

Text File | 1993-01-28 | 1.8 KB | 38 lines

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From: Philip Machanick <[e-mail]>
Subject: Re: PowerPC/060 macs
Message-ID: <[e-mail]>
X-Xxdate: Wed, 27 Jan 93 12:06:51 GMT
Sender: [e-mail]
Organization: Computer Science Dept, Wits University
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References: <[e-mail]>
Date: Wed, 27 Jan 1993 10:18:14 GMT
Lines: 24

In article <[e-mail]> Ray Fischer, [e-mail]
writes:
>Yes, a 300DPI 19" color monitor would be really nice.  But I personally
>would rather use the money to buy a house.

I doubt much more than 100dpi would make a difference - provided
you can use as many colours as you need.

You need more resolution on printers than on screens because
printers usually can't vary the intensity of each dot. Instead,
they must simulate intensity variation by changing the size of
the dot or amount of white space between dots (half toning).
A screen on the other hand - unless it's pure monochrome - can
vary the intensity of each pixel. Colour is even worse because
most printers only support some small number of colours (4 to 8) and
not only must change in intensity be simulated by changing the
density of dots most colours are obtained by mixing dots of
different colours, with limits on how this can be done to avoid
unwanted patterns (moire patterns).
--
Philip Machanick                   [e-mail]
Department of Computer Science, University of the Witwatersrand
2050 Wits, South Africa
phone [phone]***<-NEW PHONE NUMBER***fax [phone]