Talk:Control unit

message: What is "ad-hoc logic"?
Should that term if you can be get to get, where it apears in the article, perhaps link to another wikipedia-page (which would be red link (like hear), to begin with, because an article for that term does not exist at the moment. A page for the term "ad-hoc" exists though)?
:ad-hoc logic litterally means logic developed on the spot. It serves to illustrate the point that the control unit was rarely standardised (the right word has slipped my mind... standardised was the closest I could come). I agree it probably needs a better definition, maybe someone from project computing could do something?
:202.89.169.23 01:34, 25 May 2007 (UTC)
replies: text: Hm, maybe hardwired control is the missing phrase? --Abdull 19:48, 5 July 2007 (UTC)
thread_title: DESIGN OF CONTROL UNIT

message: Keep. I have seen that a template proposes merging a\but if you dont want to i will ahev to bsay its fine but you still ahve to get to gethardwired control into control unit. I am afraid that it would be inappropriate. The concept of "hardwired" is important of its own, and deserves as a standalone IF THIS IS IN YOUR PROJECT YOU HAVE COPYED OFF WIKIPIDIA article. For example, it is not only used in computing, but also in biology. "Hardwired" is such a "crosscutting-several-sciences" concept, like "bootstrapping" (the latter being used in embryogenesis, language acquisition, computing, and its straightforward generalization exists also in communication and in foundation of mathematics, although the literature does not use this name for that). In summary, I think that hardwired must be kept standalone, should not be merged. Physis (talk) 13:26, 29 August 2008 (UTC)
thread_title:  Merge 

message: I think the article should be completely re-written to first state the historical significance of "hard wired"  (eg fixed wiring/wiring loom/unchangeable). Only then should its present meaning be explained to differentiate from programmable/microprogrammable devices.  
I agree—Preceding unsigned comment added by 86.140.202.8 (talk) 10:37, 15 August 2009 (UTC)
thread_title:  Article re-write suggested 

message: The last paragraph is copypasta from http://www.pcguide.com/ref/cpu/arch/int/compControl-c.html but I don't know how to add references  —Preceding unsigned comment added by 220.253.81.204 (talk) 09:44, 10 February 2010 (UTC)
thread_title:  Citation? 

message: This article has been found to be edited by students of the Wikipedia:India Education Program project as part of their (still ongoing) course-work. Unfortunately, many of the edits in this program so far have been identified as plain copy-jobs from books and online resources and therefore had to be reverted. See the India Education Program talk page for details. In order to maintain the WP standards and policies, let's all have a careful eye on this and other related articles to ensure that no material violating copyrights remains in here. --Matthiaspaul (talk) 13:02, 31 October 2011 (UTC)
thread_title:  Look out for possible copyright violations in this article 

message: An image used in this article, , has been nominated for speedy deletion at Wikimedia Commons for the following reason: Other speedy deletions 
;What should I do?
Don't panic; deletions can take a little longer at Commons than they do on Wikipedia. This gives you an opportunity to contest the deletion (although please review Commons guidelines before doing so). The best way to contest this form of deletion is by posting on the image talk page.
* If the image is non-free then you may need to upload it to Wikipedia (Commons does not allow fair use)
* If the image isn't freely licensed and there is no fair use rationale then it cannot be uploaded or used.
* If the image has already been deleted you may want to try Commons Undeletion Request
This notification is provided by a Bot --CommonsNotificationBot (talk) 19:41, 31 October 2011 (UTC)
thread_title: File:Hardwiredcontrol.gif Nominated for speedy Deletion

message: I did a little retouching, but this article still contains too much "hard-waving" and technobabble that sounds like it's explaining things and really doesn't.  I second the call for expert attention. Peter Flass (talk) 16:05, 26 May 2012 (UTC)
thread_title:  Still too much hand-waving 

message: Trouble started with this edit by a perhaps well-intentioned drive-by IP "expert."  Interjecting discussion of automotive control units into this article just muddies the waters and causes confusion.  If someone wants to write a generic article or disambiguation including appliance control units, game control units, widget control units, etc., then please create a control unit (disambiguation) page.  If you don't think the CPU meaning of the term is primary, please submit a WP:RM to move this article to CPU control unit or control unit (CPU).  Thanks, Wbm1058 (talk) 15:45, 1 November 2012 (UTC)
replies: text: IMHO the usage of control unit as "peripheral controller" is primary. Peter Flass (talk) 15:52, 1 November 2012 (UTC)
replies: text: By "peripheral controller", do you mean peripheral DMA controller, peripheral pin controller, or something like the UNIVAC 1050, which "was commonly used as an off-line peripheral controller"? – Wbm1058 (talk) 16:10, 1 November 2012 (UTC)

text: Start with the general summary article on computer.  It has a Control unit section which says an alternate name for control unit is central controller and clearly is about the CPU component, and points to another main article, CPU design, which says that a control unit is "logic which controls the datapaths."  It seems to me that control unit primarily means central, not peripheral controller, and controller primarily means peripheral, not central controller—see Controller (computing), which is really not much of an "article", perhaps it's a broad-concept article (WP:CONCEPTDAB). – Wbm1058 (talk) 17:53, 1 November 2012 (UTC)
replies: text: That's the reason I haven't gone near this article lately - there's too much of a difference in terminology.  For someone with a mainframe background a "control unit" is a piece of gear, often a separate box, that interfaces between a channel and a device, only occasionally called a "controller."  Controller (computing) touches on some of this, plus a lot of other stuff.  I added the "standalone device" part there myself.  It seems there are just lots and lots of things that can be named by "controller" or "control unit" - that's why I like the idea of renaming this article to something like CPU control unit so that the other "control units" can have separate articles. Peter Flass (talk) 18:44, 1 November 2012 (UTC)
replies: text: Hi, just noticed and read your comment over at Talk:Controller (computing)#Controller vs. Control unit.  As a student, I had hands-on experience with the Programma 101 and IBM 1620. But then the closest I got to a mainframe was the window where punched cards were dropped off or later, a CRT terminal or PC running terminal software.  I suppose your perspective depends on whether you had up-close-and-personal experience with the mainframe hardware.  From the earliest days, the Von Neumann architecture used the term control unit for the CPU component.  Perhaps back in the day just that CPU component was housed in a separate box with wires running from it to the box containing the processing unit.  Then they merged the two units into a single box called the central processing unit, but even though the control(ler) unit was no longer in a separate physical unit, the term control unit stuck.  I suppose at one time it was easy to distinguish between the central processing unit (without any concern for what components were inside it) and apparently still-separate "control units" for peripherals.  But, as these also gradually shrunk to the point of becoming single chips, or even one of many functions of a single chip, perhaps the name changed to controller to disambiguate it from the CPU unit.  I'm fine with mentioning in articles about peripheral controllers that they are or were sometimes called control units, but I don't think we should have article titles or links calling them control units, as that can only cause confusion.  I'm open to the possibility of renaming this article, and it may come to that, but first I'd like to try to make it work with the current title.  Next step is creating Control unit (disambiguation), we need that. – Wbm1058 (talk) 21:21, 1 November 2012 (UTC)

text: Perhaps you are familiar with the IBM 2821 Control Unit. I note that its article doesn't really say whether its a control unit or controller.  Control Unit is capitalized because that is the proper name for the device (well, I assume that it is, if the article title is correct).  But there's no law that says that a device given the proper name Control Unit can't be described as a controller, if that is actually what it is.  See List of IBM products#Input/Output control units.  Many of these are actually named or described controller. – Wbm1058 (talk) 00:45, 2 November 2012 (UTC)
thread_title:  Separating [[control unit]] from [[electronic control unit]] 

message: Looks like a reasonable reorganization.  The disambiguation page needs a little cleanup, but that can be worked on. Peter Flass (talk) 11:01, 2 November 2012 (UTC)
replies: text: Thanks. And reasonable DAB cleanup, too.  Wbm1058 (talk) 16:25, 2 November 2012 (UTC)
thread_title:  Reasonable choice 

message: The most recent set of edits added a lot of unsourced info about the control unit's function. I know nothing about control units, so it is impossible for me to verify or refute the new edits. Almost every sentence in this article warrants a "citation needed" tag. I hope someone with a bit more expertise can fix this entry, because it is currently a hot mess.
Aroundthewayboy (talk) 22:23, 25 July 2014 (UTC)
thread_title:  Still unsourced, still needs rewrite to be comprehensible to layman 

message: Hello fellow Wikipedians,
I have just modified  on Control unit. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Corrected formatting/usage for http://qss.stanford.edu/~godfrey/vonNeumann/vnedvac.pdf
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at ).
Cheers.—cyberbot IITalk to my owner:Online 22:41, 31 March 2016 (UTC)
thread_title:  External links modified 

message: I found the text to be vague, incomplete and repetitive. I tried to preserve the nonrepetitive parts of the text as found. I separated the discussion to describe a control unit for the three major types of microarchitectures, then added sections for stall-reduction, low power and I/O. I tried to cite examples. I'm definitely hoping for feedback and corrective edits. I've noticed that as an article becomes less vague, reviewers are more able to correct its facts. Best wishes. Ray Van De Walker (talk) 00:09, 27 December 2019 (UTC)
thread_title:  2019 Rewrite 

message: Chemistry note and physics note 105.112.154.118 (talk) 18:35, 16 February 2022 (UTC)
thread_title:  Chemistry and physics