[net.works] Workstations vs Terminals

BILLW@SRI-KL@sri-unix (05/18/82)

From: BILLW at SRI-KL
Many of you are wrong.  The packaging for most modern workstations
is NOT that similar to the packaging for a terminal, to wit:

1) The CRT: Workstations with bit-map dispays generaly require a
   special high resolution CRT with an increased horozontal scan
   rate.  These are currently abot 4 times as expensive as the
   monitors required for a typical 24*80 display (about $500 each,
   I have heard).  Ordinary terminals benifit greatly from the mass
   production of televison and video-tape equipment.

2) Keyboards: Have you ever SEEN a lisp-machine keyboard ?  This
   may be excessive, but a bottom of the line workstation ought
   to have a keyboard that is as good as a top of the line terminal.
   Also, if you have a bit-map graphics display, you NEED a mouse
   or other similar pixel resolution pointing device.

3) Power suppplies: Up to current requirement of about 3 amps,
   you dont NEED a distinct power supply, as a tranformer and
   a simple monolithic regulator suffice.  When you start talking
   about a CPU board that draws 3 amps, plus memory plus disk or
   network interface, OR you have a bus structure, your power
   supplies quickly get more complicated and much more expensive.

4) Other things:
   A multi-card worstaion needs a card cage and a backplane.
   Most current workstations have a pretty big box somplace, in 
   addition to the keyboard/CRT.

Enjoy
BillW