Specifications

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Our Cookie and Coffee Klatch was hosted by Nancy Vrooman and Peter Stonehower, to the delight of a full house,
with almost half an hour of social time. We used this time to catch up on our many projects, and family news.
Guy Kuncir introduced our guest speaker Ralph Dallon, from our original Staples store, (Broad Street) discussing
computer monitors, both LCD flat screens and CRT types.
Ralph opened his discussion with the question: "What kind of monitor should I buy?". This problem is defined by
knowing what you want to do with the computer. As outlined in his handout, you will need to decide which aspect
or feature of your system is most important. Web browsing, and email are simple applications which need only a
low end display device. Video editing and desktop publishing are more demanding, and usually the most difficult
display problems are faced by the computer gamers who need every bit of video power they can get to show fast-
moving 3-D images in a full range of colors and intensities.
Another problem is the age of the operating system, such as Win9x, Win2K, or WinXP, each one more powerful
than the previous one. Later systems support more kinds of monitors, as the number of models and manufacturers
continues to increase. There are two basic styles of video cards to drive these monitors - analog and digital. Each
has its features and most also have limitations. The amount of RAM on board the card also affects performance, as
images are read from that area as the system controls the display. The bit-rate at which information enters and
leaves the memory is a very important specification, as it determines how fast the screen may be refreshed.
Currently, cards are starting to have 256 MB of display RAM, and most older systems have at least 16 MB of RAM
to store images apart from the regular system RAM. Flicker and color-depth are affected by the type of display and
how it is matched to the video card. Analog monitors can display an unlimited range of color tones, but digital
monitors are almost as good, with 16 Million colors available from a 24 bit digital signal. In a matched digital card
and monitor system, there is no need for the RAM-DAC converter for an analog output, so those systems are
probably the best combination for your video display tasks.
Another deciding factor is the amount of space available on your desk. If you are cramped for room in your
computing environment, the Liquid Crystal Display [LCD] revolution is just what you were waiting for. An old-
fashioned Cathode Ray Tube [CRT] monitor has at least twice the footprint of an LCD with comparable display
area. Pricing has changed so that 17" CRT monitors are now available for $100! Brand names, such as Sony,
Viewsonic, Samsung, and NEC are the leaders in the marketplace, while other makers try to match their
specifications and performance, at lower prices. One big advantage of LCD displays is the lack of any harmful
radiation, such as soft X-rays produced by high voltage electron beam acceleration in the CRT. The bulky design of
CRT monitors also contrasts with the slim, light weight features of the LCD types, so the lower mass is a definite
advantage when you install the LCD display on your desk. LCD prices start as $289.98 for Envision EN-5200e 15"
model, and range to $1,750 for a 20" VP201M Viewsonic, as listed in the Staples LCD website comparisons. See:
http://staples.com/Catalog/Compare/compchart.asp?ClassID=142219&FunctionType=1
Also read the pop-up
window on "Learn More About All LCD Displays", an icon on Staples' "All LCD Displays" page. As presented in that
window, this may be a useful discussion, related to Ralph's discussion: What kind of computer monitor do you
need?
** CRT monitor **
CRTs are the standard for computer monitors, and combine affordability with high-resolution and image quality.
Because they refresh very rapidly they are the monitors of choice for action games and other programs that require
rapid and frequent screen redraws.
Key features:
Screen size is measured in inches diagonally across the monitor display. This is a measure of the glass size. If
there are two size ratings, the first refers to the glass size, the second to viewable image size. The viewable image
may be smaller than the glass size. A 17" CRT is recommended for general use, and 21" for use with high-end
graphics and desktop publishing. Available screen sizes include 15", 17"-18", 19", 21", and 22"+.
Resolution is measured in pixels, or individual graphic dots of color. A resolution of 800 x 600 means there are a
total of 480,000 pixels (e.g. color dots) on the screen. The higher the resolution, the sharper the image on a given
screen size. Image quality is also affected by frequency, which measures the refresh rate, or number of times per
second a CRT monitor's screen is redrawn. The higher the frequency, the faster the refresh rate; the faster the
refresh rate, the less screen images flicker. The frequency of most monitors can be adjusted higher by setting the
pixel resolution lower. The smaller the dot pitch - which describes the amount of space between individual pixels -