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Results tagged with screen
Search options answers only
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user 6659
for questions about retrocomputing screens or terminals
3
votes
No Brightness Controll on a Compaq Contura 3/20 Laptop
According to the Service Manual, first check if you're not using any power saving mode, as they limit brightness. Next check all cables, and if that won't work, replace the display (where the lighting …
- 236k
27
votes
Accepted
How did humans interact with early computers without screens or sensors?
I understand that either nonelectromechanical computing devices (analog)
or electromechanical computing devices (digital) were ever developed by humans.
That distinction is a bit off, mixing un …
- 236k
12
votes
Accepted
Why green phosphor instead of amber?
So when it is about a monochrome screen, green outclasses amber. … Any refresh frequency past like 15 Hz or so would result in an extreme blurred screen. Its low writing speed is another no-go (*5).
For most green screens in the 1970s and later, P31 was used. …
- 236k
22
votes
Accepted
Amiga multitasking - different resolution for each program on screen dragging
TL;DR: For the Monitor 320x256x32 is the very same as 640x256x4
How about a 640x512 interlaced screen and a 320x256 [non interlaced] one? … (from comment)
To the screen that's still the very same resolution. Interlaced resolution is generated by sending out two pictures in succession, one with all even lines, one with all odd lines. …
- 236k
21
votes
Accepted
How do 80x25 characters (each with dimension 9x16 pixels) fit on a VGA display of resolution...
How does VGA manage to show 720x400 resolution text on a 640x480 display?
This might be your basic misunderstanding here. Displays as used back then and what VGA was designed for, are not a fixed 64 …
- 236k
13
votes
Accepted
Can the BBC be programmed to a half-size mode 1 screen mode with 16 colours instead of 4?
The addresses were meant to access a linear character screen memory which then gets translated via a character ROM into rows of a character to be shifted into the video signal. … While the 6845 can be put to use with a large variety of screen formats, it always comes down to the amount of bytes read in a line (*1). …
- 236k