Marcin Wichary

17 September 2019 / 40 tweets / 75 photos

When screens were expensive

This is an archive of a Twitter thread from 2019. I have since deleted my Twitter account.


Hello, stranger.

I’m glad you decided to join me on this impromptu tour of a somewhat forgotten era of computing: the time when Screens Were Expensive – and so computers had no choice but to use smaller screens, small screens, and even ridiculously tiny screens.

Shall we…?
/ 643 / 17 Sep 2019 / 00:21
In the early 1980s, if you couldn’t afford a (ridiculously expensive) Xerox 860 word processor will a “full page” display, you could save some money by buying a Xerox 850, with a “half page” display.

(The 850 was still ridiculously expensive.)
/ 20 / 17 Sep 2019 / 00:21
Magnavox Plasma display from 1978! Great name, really impressive, and probably very expensive… and yet still with a very thick bezel taking half of the responsibility of making it look awesome.
/ 8 / 17 Sep 2019 / 00:22
IBM 2260 was an earlier Master Of Bezels. I believe you could buy a more expensive model with More Screen, or a cheaper one with fewer lines… but the same form factor (just more plastic).
/ 14 / 17 Sep 2019 / 00:23
This is a Hell Digiset typesetting machine. The landscape screen looks impressive only without the keyboard – otherwise you realize this is not today’s typical screen made wider, but rather a normal screen made *shorter*.
/ 7 / 17 Sep 2019 / 00:24
The situation was similar in the case of this “human-engineered” HP 250 – this terminal might not have had that many characters, but at least had so much *character*!
/ 17 / 17 Sep 2019 / 00:25
Speaking of style, check out this guy next to an IBM terminal probably around the same time (1970s). Once again, you could buy a more expensive screen, or a smaller one in a sea of black.
/ 9 / 17 Sep 2019 / 00:26
IBM was pretty good at screen trickery. IBM 3742 Dual Data Station was a data entry terminal meant for two people, and with two keyboards, but only a single screen. The screen was split into two “virtual screens” with a special prism.

(A single-screen 3741 was also available.)
/ 16 / 17 Sep 2019 / 00:27
IBM 5252 split a slightly bigger screen in a slightly different way.
/ 5 / 17 Sep 2019 / 00:28
I don’t know much about this Inforex terminal, but I know that even on a screen so small, an error that says only ERROR is not an excuse.
/ 11 / 17 Sep 2019 / 00:28
Mohawk Data Sciences System 2400 (1973) had a very pretty green screen and if that keyboard is permanently slanted, I am in love.
/ 5 / 17 Sep 2019 / 00:29
MicroOffice RoadRunner – “the five-pound computer aimed at the mobile professional” from 1983. Its display was 80 characters, but only 8 lines. (Love the cartridge indentations below the display.)
/ 5 / 17 Sep 2019 / 00:29
VYDEC 2000 word processor! A glorious 12-line display (*)!

(*) fine print: “4 lines of status and command areas”
/ 8 / 17 Sep 2019 / 00:30
TI Insight Series 10 was introduced in 1981. It had 40×24 characters, on a 5½" “swivel” CRT screen.
/ 10 / 17 Sep 2019 / 00:30
The IBM 1015 Inquiry Display terminal was relatively similar spec-wise – a 5½" display of 40×30 characters – but much, much older. The screen still looked like a radar tube, betraying its origins. “Erasure time is 6 seconds.” (Be still, my heart.)
/ 12 / 17 Sep 2019 / 00:31
Up until a point, there were so few characters in displays, that you could just brag about the number. This red Burroughs “SELF-SCAN” display is a “256-character display” (today, we would call it 32×8 instead).
/ 6 / 17 Sep 2019 / 00:32
(At some point many years later, I saw a mention of a 1920-character display. I bet you can figure out what common text resolution this meant.)
/ 2 / 17 Sep 2019 / 00:32
Or this Owens-Illinois terminal (on the right) made things even more complicated. It was advertised as a “64×256 lines at 33.3 lines per inch” – but it’s 40×6 characters, it seems.
/ 6 / 17 Sep 2019 / 00:33
I feel the Osborne 1, Commodore SX 64, and IBM 5100 – all early portable machines with 5-inch displays – are relatively well-known, but should be included anyway.
/ 7 / 17 Sep 2019 / 00:33
A budget mid-1970s IMSAI computer had all the components you’d recognize from early microcomputers… but in very, very different proportions. As far as I understand, this screen could still display 40×24, or even 80×24 characters? (They’d just be incredibly tiny.)
/ 6 / 17 Sep 2019 / 00:34
Berthold Fototype TPE 6001 had a gorgeous screen (*) and kind of an amazing keyboard. Sometimes the most wonderful computers were hidden in specialized areas. Here: phototypesetting.

(*) at least on the outside, of course
/ 15 / 17 Sep 2019 / 00:35
Up to 10 lines! Up to 198 characters! The smallest Bunker Ramo financial terminals were so small QWERTY just walked away from the whole deal.
/ 5 / 17 Sep 2019 / 00:36
(Although some more fancy ones came with two screens for some reason?)
/ 3 / 17 Sep 2019 / 00:36
This SCM Cogito 240 calculator had a 64-digit display. There were many more like it, but this one had – once more – a beautiful big bezel tricking you into seeing a much bigger display.
/ 7 / 17 Sep 2019 / 00:37
Some computers couldn’t decide whether they want to pretend the screen is bigger, or just own the small size. Either way, this Culler-Fried System from 1960s had a fantastic keyboard-to-screen ratio.
/ 8 / 17 Sep 2019 / 00:37
Digisplay, a 1972 “flat-screen image sandwich” had 512 *tiny* characters.
/ 4 / 17 Sep 2019 / 00:38
On the other hand – IBM 4700 financial system had a 5" display, but also a courtesy to come with a smaller keyboard to match it.
/ 5 / 17 Sep 2019 / 00:38
(IBM 3604, its predecessor, did something similar.)
/ 4 / 17 Sep 2019 / 00:39
We’re getting smaller and smaller still.

Philips PX1000/Text Lite PX1200 were portable terminals with just one line of text, and of course it makes sense! They’re so thin and tiny.
/ 7 / 17 Sep 2019 / 00:39
But if there’s one lesson we already learned in tech is that everything comes back: once-solved problems reappear as a headache for the next generation.
/ 2 / 17 Sep 2019 / 00:40
And so, a few decades earlier, you could buy a really expensive CompuWriter typesetting machine – but that big space in front was for paper you were typing *from*. The display was a tiny sliver of one line, off to the side.
/ 5 / 17 Sep 2019 / 00:41
Or, remember that Xerox 850/860 machine from that we started with? If you couldn’t afford even the half-page screen, there was another option: a little display of 16 green letters.
/ 1 / 17 Sep 2019 / 00:41
A Berthold typesetting machine came with a beautiful and unique keyboard – and in the periphery, a “screen” that felt more like a calculator display, with room for only *eight* last characters you typed.
/ 4 / 17 Sep 2019 / 00:42
And if you’re thinking “at least the calculators are safe,” here is the abominable Royal Digital 3 with only *four* digits and a special key to scroll to the left or right.
/ 6 / 17 Sep 2019 / 00:42
(I wrote about Royal Digital 3 in my newsletter last year. It not only has the worst display, but also a pretty awful “keyboard”: The worst keyboard ever made)
/ 2 / 17 Sep 2019 / 00:42
But at last there *was* a display. Because we’re going to end one of the first computers ever, the otherwise glorious and memorable 1951’s UNIVAC, size of a room, its memory banks filled with mercury.
/ 9 / 17 Sep 2019 / 00:44
Where is its screen? *What* is its screen? Can you tell?
/ 17 Sep 2019 / 00:44
There it is, in the middle of its blinking console, surrounded by a white frame – a “display” of sorts, a screen of an era where cathode ray tubes in computers were used for… memory, rather than display. (Yes!)
/ 7 / 17 Sep 2019 / 00:46
It’s pretty simple. Each character UNIVAC can share with you is accompanied by a simple lightbulb that would shine at the right moment.
/ 1 / 17 Sep 2019 / 00:47
If it seems simplistic and inadequate, it was, even in 1951.
/ 17 Sep 2019 / 00:48
Luckily at that time, and for a few decades later, people using computers who didn’t want to look at lightbulbs or spend a lot of $ for a flickering screen, had an alternative. At that time, and for a few decades later, the best computer display was still a nearby typewriter.
/ 2 / 17 Sep 2019 / 00:51
In conclusion, if you’re interested in the history of displays, BUY MY BOOK ABOUT KEYBOARDS.

But seriously, I found all of these in my research of keyboards, so I thought it’d be fun to share this parallel track!
/ 17 Sep 2019 / 00:52
(It’s actually a bit sad how much of this relatively recent history is already gone – how many of those specialized computers survive today only in bad scans of old newspaper photos.)
/ 1 / 17 Sep 2019 / 00:54
(And, if you’ve enjoyed it, you might enjoy the parallel thread called When Keyboards Were Desks: When keyboards were desks)
/ 2 / 17 Sep 2019 / 01:05