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terminal

A computer terminal is an electronic or electromechanical hardware device that can be used for entering data into, and transcribing data from, a computer or a computing system. The teletype was an example of an early day hardcopy terminal, and predated the use of a computer screen by decades.
Early terminals were inexpensive devices but very slow compared to punched cards or paper tape for input, but as the technology improved and video displays were introduced, terminals pushed these older forms of interaction from the industry. A related development was timesharing systems, which evolved in parallel and made up for any inefficiencies of the user's typing ability with the ability to support multiple users on the same machine, each at their own terminal/terminals.
The function of a terminal is typically confined to transcription and input of data; a device with significant local programmable data processing capability may be called a "smart terminal" or fat client. A terminal that depends on the host computer for its processing power is called a "Dumb terminal" or a thin client. A personal computer can run terminal emulator software that replicates functions of a real-world terminal, sometimes allowing concurrent use of local programs and access to a distant terminal host system, either over a direct serial connection or over a network using, e.g, SSH.

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  1. B

    Replacing "short wire" in immersion heater

    Hi, This morning, I found that my immersion heater had stopped working. The short wire that runs from the thermostat to the live terminal of the heater had fried (or at least its insulation did) and disconnected from the terminal pin. Although I've scavenged a replacement wire from an old...
  2. A

    Wireless thermostat Wiring live and neutral from boiler terminal

    I am a gsr and just wanted clarification as to why its not recommended to just use a 5 core cable connecting live, neutral, com and nc from combi boiler terminal box rather then feeding another cable from spur socket just for live and neutral for reciver box. Any advise
  3. J

    Boulter oil boiler flue terminal

    Hi all, Should this Boulter Camray oil boiler chimney/flue have a 'rain-cap' on? If yes what type please.
  4. L

    flue terminal too close to cooker vent

    some advice needed, I could do with some input on a fanned flue outlet being 200 mm away from a cooker hood vent, the vent has flaps which close when not under positive pressure from hood. would this be classed as safe due to the flaps closing when cooker hood not in operation. I respect the...
  5. L

    fanned flue terminal

    bit of guidance needed. I have a flue which is round about 200 mm away from a cooker hood vent, the vent terminal from the cooker hood has got flaps which are closed when the cooker hood is not in use, so effectively only open when under positive pressure from hood, just a bit unsure as to what...
  6. Scott_D

    Damaged flue terminal

    Just been to look at an old Vaillant combi for an elderly couple. It's under a Vaillant contract and they have AR'd it because the bird guard fins of the inner flue terminal have gone brittle and fallen off. Can I just fit a stainless flue guard to get over this?
  7. J

    Which size gas terminal?

    Originally, I though this was going to be a straight forward question and then just now I checked something. To cut a lengthy explaination short...a friend has what we thought was a living flame fire, which sits within a brick chimney breast. Work is being done on the chimney on the roof and it...
  8. M

    Flue 600mm from a surface or boundary facing the terminal

    Any one come across it were a builder has built a house and were the position they want the boiler the flue points out to a boundary. No surface there. But less than 600mm away from the boundary line between 2 properties. I am correct in saying this is not acceptable? Its mainly for nuisance...
  9. A

    Flue Terminal in Alcove (Baxi EcoBlue System 32)

    Hi, take a look at the following and let me know what you think. A customer wants an unobtrusive flue terminal (new installation) in the front of a listed building. The preferred site is in the center of an alcove, approx 600mm from the floor with more than 300mm clearance to all siting...
  10. the_d_o_t

    terminal question

    hi guys, got a flavel firenza fire in a brick chimney with no flue liner failing on spillage and I've noticed that the terminal is the type you would use with a liner should this not be a pot? thanks nick
  11. Chalked

    Ba I megaflo GA black flue terminal

    Got a customer with two of these. They are 3 years old and the terminals were white. He had them sprayed black to match the down pipes, but after a year or so, it's coming off. can you just get the black terminal, like the Vaillant ones. Or will it mean getting two complete black flue kits...
  12. T

    Flue terminal not sealed

    So I ''at risked'' a boiler last week because the flue terminal is not sealed with cement externally, it is sealed badly internally with silicone. Land lord is questioning warning notice.. 'can't it just be sealed internally with cement?' I said no as flue gases could potentially enter the...
  13. R

    Bird can fly into chimney serving open-vented gas fire!

    Is it usually considered acceptable for an open-vented gas fire (by which I mean one which vents its exhaust gases up a chimney by natural draught) to have a terminal that will allow a bird into the chimney? Got a phone call from my mother yesterday. She's not going to be able to meet me...
  14. Robert Tyrrell

    Wiring problem I need a bit of help with :)

    Yesterday I fitted a new Worcester Grecnstar Danesmoor Kitchen system boiler (Oil, flue, and hydraulics so far) but the customer had specified, and purchased, the fascia mounted Worcester programmer and I can't work out how to connect everything up so I'm wondering if any of you bright sparks :)...
  15. Chalked

    Vaillant thermocompact flue terminal

    Need a replacement terminal for one that has the end missing. amyone know where to get one, or even a complete flue. ( the aluminium inner one)
  16. A

    Replacing Worcester 24si flue terminal

    Hi Guys, I've been asked to replace a damaged horizontal flue terminal (80/125mm Flue) It's the older all white terminal, so just replacing the terminal spigot isn't an option. The boiler's on the 1st floor of the house. Horizontal run in the loft with three 1 metre extensions. The boiler was...
  17. A

    Looking for circular terminal flue guard with 4 screw holes

    Hello I'm looking for a new external terminal flue guard as our existing one has a hole burned through it and needs replacing. However it has 4 holes for screws instead of 3. Does anyone know where I can find one with 4 screw holes? It would save us drilling new ones. We need one asap to get...
  18. M

    Logic plus roof terminal

    I need to fit a boiler in a pitched roof house extension which I have not done before. As it is pitched I might need an extra length of pipe. Is it the same extension piece for ordinary flue as a roof terminal? And as the joint might be in the void from ceiling to tiles, I guess I need to cut in...
  19. M

    Changing to a Thermostat

    Sorry can't edit the title, it should read changing to a digital programmable thermostat. Hi. We currently have a Potterton PRT 100 'dial' room stat in our property. The heating system is fairly standard with a Potterton Boiler, albeit we also have a Gledhills Thermal Store that only allows a...
  20. W

    Distance From Flue Terminal to a Chimney?

    Hi there! I'm studying on my gas engineer course at the moment and I'm immersing myself into the world of Flues. Looking at the distance tables I can't see anything about how far away a flue terminal has to be from a chimney that's connected to an open fire. Is the chimney just generally...
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