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GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
trønderen27-Oct-23 5:53
trønderen27-Oct-23 5:53 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
StarNamer@work27-Oct-23 14:39
professionalStarNamer@work27-Oct-23 14:39 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
trønderen28-Oct-23 5:22
trønderen28-Oct-23 5:22 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
bryanren30-Oct-23 5:37
bryanren30-Oct-23 5:37 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
jschell30-Oct-23 5:46
jschell30-Oct-23 5:46 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
bryanren30-Oct-23 7:00
bryanren30-Oct-23 7:00 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
jschell31-Oct-23 5:37
jschell31-Oct-23 5:37 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
trønderen31-Oct-23 7:56
trønderen31-Oct-23 7:56 
I never saw a Plato terminal myself, but I read about it in Ted Nelson: Computer Lib / Dream Machines. He tells:
The internal circuitry that draws the screen 
    is highly capable. Receiving a 20-bitt code, 
    the terminal itself deciphers it as --
    A LINE ON THE SCREEN, or
TWO STANDARD CHARACTERS ON THE SCREEN
    from its FIXED set character memory, or
TWO SPECIAL CHARACTERS ON THE SCREEN
from its CHANGEABLE character memory
    (which can be loaded with Russian,
    Armenian, katakana, Cherokee or what-
    ever -- even little pictures -- at the 
    start of the lesson), or
A COMMAND TO THE MICROFICHE PROJECTOR, or
A COMMAND TO THE AUDIO PLAYER, or
A COMMAND TO WHATERVER'S IN THE GENERAL JACK.
He also tells:
The next generation of Plato terminals is coming down the line. The microfiche projector is withering away, as was easily foreseeable; meantime steps are being taken toward a more high-performance terminal, by putting a computer in it.

So it seems like there were at least two generations of Plato terminals, and it could handle both characters and lines - but only pixel on/off, no halftones. The microfiche was projected plasma screen from the back; it gave access to 'unlimited' amounts of text without having to transfer it over the phone line. The touch panel was an option, as was the audio disk. The 'general jack' was an I/O connector, intended for 'all kinds of other devices, such as piano keyboards, to be used for student input'. A terminal cost USD 5000 -- that is mid-1970s dollars.

I can't tell exactly the year this was written; my copy states 'Copyright (c) 1974, 1975, 1980', but I believe that the text is unchanged from the original 1974 edition. (It wasn't labeled 'Second edition' until 1987', long after I got my copy.)
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
JudyL_MD27-Oct-23 5:57
JudyL_MD27-Oct-23 5:57 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Grotsoft30-Oct-23 0:09
Grotsoft30-Oct-23 0:09 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Grotsoft30-Oct-23 0:09
Grotsoft30-Oct-23 0:09 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Gary Wheeler27-Oct-23 5:59
Gary Wheeler27-Oct-23 5:59 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
charlieg27-Oct-23 6:21
charlieg27-Oct-23 6:21 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Chris Maunder27-Oct-23 6:25
cofounderChris Maunder27-Oct-23 6:25 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Gary R. Wheeler27-Oct-23 15:09
Gary R. Wheeler27-Oct-23 15:09 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Chris Maunder29-Oct-23 12:26
cofounderChris Maunder29-Oct-23 12:26 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
trønderen27-Oct-23 6:35
trønderen27-Oct-23 6:35 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Norm Powroz30-Oct-23 6:38
Norm Powroz30-Oct-23 6:38 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Greg Utas27-Oct-23 6:38
professionalGreg Utas27-Oct-23 6:38 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
ProfessorDan30-Oct-23 6:39
ProfessorDan30-Oct-23 6:39 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Gerry Schmitz27-Oct-23 6:59
mveGerry Schmitz27-Oct-23 6:59 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
kmoorevs27-Oct-23 8:22
kmoorevs27-Oct-23 8:22 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
TNCaver27-Oct-23 10:56
TNCaver27-Oct-23 10:56 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
Daniel Pfeffer28-Oct-23 6:49
professionalDaniel Pfeffer28-Oct-23 6:49 
GeneralRe: "You are in a maze of twisty little passages, all alike." Pin
NoelWalker30-Oct-23 0:09
NoelWalker30-Oct-23 0:09 

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