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terminals

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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Recent contents Top users
  1. Steve weightman

    Air pressure switch terminals

    Hi, can anyone identify what the 1,2 and 3 terminals are on the round plastic aps the old honeywell has been replaced with it but no instructions were in the box.
  2. J

    Chimney Pots/gas terminals

    Hi All. Does anyone know of a 'one stop' source of information that details the requirements regarding chimney pots/gas terminals and their uses. For example, can clay chimney pots be used on gas fires. I know there is plenty of stuff on the web, but I can't seem to find one single source. There...
  3. R

    G4 terminals

    have a customer with an old myson back-boiler with a G4 vent terminal is not pulling as good as it should and i recon changing the vent could solve it! can anyone suggest a suitable terminal replacement/picture as i cant find owt :mad2: thank you
  4. G

    Drayton RF701 - only 3 wires

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  5. G

    Glowworm flexicom 24cx and climapro rf2

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  6. A

    Valor 941 coal layout & flue terminals

    Hi all, Just looking for a bit of advice re this fire. I visited the customer today with this fire as it would extinguish after about 10 mins running at max setting. Not been serviced in a good few years so managed to download manual and carry out majority of service bar laying out of...
  7. M

    brass crimps for electric terminals

    You know when you get a cable on a boiler that has the crimps on them, can you buy them? It is so much easier to put them in the block when they have these on. I have been frustrated enough doing it with the strands going all over the shop
  8. Hobo128

    Terminals

    Is a chimney pot classed as a terminal or in every case do you need a bird guard on it.
  9. A

    Changing External Thermostat/Controller for Vailant Turbomax 242E

    Hi - I have an old 'Smiths' electronic controller that keeps failing so I have purchased a controller/Thermostat to replace it, based on direct control of electrical heating using electronic relay I believe. The wiring diagram for the Turbomax shows switching contacts between terminals 3 and 4...
    • anarack
    • Thread
    • changing controller external shows switching terminals thermostat turbomax vailant
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  10. G

    Cardsave Terminals

    For the forum members that have signed up with Cardsave and have a mobile card terminal, it will be of interest to you that a mobile charger is available at a cost of £15 from them. This means that we can charge our terminals in the van or your car. It connects via the micro usb slot on the...
  11. M

    Flue terminals and Boundary Lines

    Hi chaps, I need to do a boiler swop where the old boiler is right in the kitchen next to the boundary wall of a terrace house. In the viper it says you need to be 300mm from the boundary just incase they build an extension. Is it ok to still core out closer than this and use a plume management...
  12. B

    Horizontal flue terminals deteriated

    About 7 years ago, I built a small block of 4 flats and installed Sime Format 100C combi boilers in each. On a recent annual Gas Safety check the engineer pointed out that I would soon need to replace the plastic flue terminals that protrude out from the exterior wall because they had become...
  13. K

    Danfoss RETB thermostat with Glow-worm betacom 28a combi

    My combi is the Glow-worm Betacom28a. There is a link inside the boiler across RT and 24v. This link must be removed and a 24v thermostat can be wired using a 2 wire connection for temperature control. My question is, will the Danfoss RET-B stat be suitable for switching the boiler on and off...
    • ken t
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  14. H

    siemens-rev-24rf-connection-to-vaillant-ecotec-837combi.

    Hi All, Can someone please advise me on how to fit a Siemens Rev 24RF wireless Programmer to a Vaillant Ecotec 837 Combi? The Ecotec has a live, Neutral and Earth terminal connected to the main supply which powers the boiler, the boiler also has terminals 3, 4 and 5 The Wireless...
  15. B

    Wiring problem- Lamborghini boiler

    Hi all. Just fitted a customers own boiler yesterday, badged as a Lamborghini but looks like a Ferroli to me. He bought from plumb-fix and it came with a really cheap looking wireless stat/timeclock (no brand) I normally stick to supplying & installing WB's & Salus units but this job came up...
  16. B

    Flue terminals protruding from the wall

    Hi, any views would be appreciated; you will have seen (and mabe discussed before) the type of terminal I am trying to describe, I am thinking of Room Sealed Flues where the installer has extended the outside Flue pipe (and terminal) so that it protrudes beyond for example the guttering so...
  17. D

    terminals

    i was at my mates and he lives in a social housing block,anyways he'd just had his gas fire done (dfe),cp 12. and he got a copy and i had a look,the engineer had put n.c.s. regarding terminal/chimney stack, to me it was a normal stack with an aliminum ?terminal,the kind you can join to a...
  18. J

    Programmer Problems

    Hi all, my problem is this, my have a fully pumped central heating system that has work fine since we moved in 4 years ago with regular servicing but yesterday morning the heating light on the programmer (Sunvic select 207XL) was out and the heating wasn't working and I was unable to advance it...
  19. P

    Flue terminals

    Hi, guys i have a copy of the vipper book and while doing my revision is was curious to know, that on pages e -19 to e -21 there were images of terminals which were categorised as unsuitable for use with different gas appliances but it did,nt say what to do if one were found to be unsuitable...
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