Aug 142023
Aug 132023
Jul 302023
Ah yes! Well the first thing to answer is what a terminal is.
A terminal is a device for communicating with text (graphics was possible but relatively rare especially in the early days) with a computer – you would type in a command in text and the computer would respond in text :-
» ls
1 2 bad-directory
Although the “terminal” is still available today in the form of a gooey program, the early terminals communicated with the computer with some form of serial port (usually RS232). The first terminals were modified teleprinters (often called “Teletypes” due to the domination of that company in the USA). These were large electromechanical devices where the display was paper – they were printing terminals.
The first terminals that displayed on a screen were very much like the printing terminals – they would “print” output from the computer on the last line of the screen and scroll for additional lines. Just like on a printing terminal except that once things scrolled off the top of the screen they were lost.
At this point in computing history, we’re just at the start of the microcomputer age; in fact one of the uses for which Intel’s second processor (the 8008) was developed was to operate as the heart of a computer terminal.
As the microprocessor controlled terminal was essentially run by software, programmers started adding in new features that would do things like clear the screen, move the cursor around the screen so you could display text anywhere you wanted.
At this point one definition of “dumb terminal” can be found – a terminal that just emulated a printing terminal was a dumb terminal; ones with additional features weren’t so dumb.
As the 1970s progressed, terminals gained more and more features and eventually some became capable of downloading software from the computer they were connected to and running that software locally. Such as (optionally) the HP 2647. Or the Bell Labs blit terminal.
Such terminals could be termed “smart” and their predecessors “dumb”. And if you notice a similarity with the somewhat later “thin clients“, you wouldn’t be entirely wrong.
Alternatively, some terminals (such as the IBM “green screen” terminals) operated in block mode where the terminal would allow a certain amount of editing within the terminal and send the result back to the computer a screen at a time. These necessarily had to have a certain amount of “smarts” built in, so they were smarter than character at a time terminals (thus “dumb”).
So to an extent there is no real agreement on what a “dumb terminal” really is. Pick one that you like!
Jul 302023
Or perhaps more than just a word given the level of dumbness displayed by the usual ULEZ opponents.
- It isn’t solely a Labour policy; the ULEZ zone in central London was first introduced by a Tory major (Boris Johnson) and extended by the current Labour major. The Tory opposition to ULEZ during the Uxbridge by-election was a cheap political stunt to distract from the atrocious record the Tories have in central government. Which seemingly worked on the more gullible.
- The penalty charge for the ULEZ zone is only paid by the most polluting vehicles – diesel cars older than 8 years old and petrol cars older than 17 years. Which is a tiny minority of the cars on the road.
- This isn’t targeting the poor; the poor in our society can’t afford cars at all. Besides there’s a scrappage scheme which pays people to scrap the smellier cars.
- This isn’t about CO2 emissions; it’s about NOx emissions.
- And frankly none of the objections (even if real) come close to outweighing the advantages of fewer deaths from pollution.
Jul 112023
Well, not “Welsh” but Brythonic. The Anglo-Saxon royal dynasty called the “House of Wessex” was supposedly founded by a certain Cerdic. The interesting thing about this character is that his name is Brythonic in origin, and of course that he defeated a Brythonic king to take his territory.
Now if we skip a few centuries to when the Anglo-Normans invaded Ireland, the Norman mercenaries were invited by a certain deposed Irish king – Diarmait Mac Murchada. A not uncommon solution for a king having been deposed was to try and raise an army to take the kingdom back, and if you have plenty of cash, mercenaries may well be part of that army.
There is no evidence for this, but what if Cerdic was a deposed Brythonic king, or a disgruntled Brythonic noble who hired a bunch of germanic mercenaries. And if he had offered them land as well as gold, that could easily explain how a bunch of Saxons ended up living here.
Which may go some way to explaining why the Brythonic people didn’t really disappear but got absorbed over the centuries.
It’s a crazy idea and there’s no evidence for it. But it’s an interesting hypothesis.
