00:03:16 Chris Taylor: Good evening members and guests. Welcome to the April monthly meeting of the Ottawa PC Users' Group. We will be starting at 7:30. Until then, feel free to chat either audibly or through the Chat window. 00:08:21 Mark Cayer: Evening all. 00:08:55 Alan German: @Mark Is Dixon of Dock Green with you tonight? 00:09:59 Stew Bruce: Replying to "@Mark Is Dixon of D..." hi al 00:10:34 Chris Taylor: Replying to "@Mark Is Dixon of D..." replying 00:10:46 Chris Taylor: entering outside the thread 00:11:22 micheline: How do you delete a file in File Explorer. In right-click, Delete is not one of the options. When I highlight the file and press the Del button on the keyboard, nothing happens 00:11:37 Alan German: @Mark P.C. Dixon was the lead character in an old British police TV saga. He always atrated out by saying"Evenin' all" 00:12:14 Mark Cayer: Oh. OK 00:12:40 Alan German: @Micheline Can you use the File menu where there is a large red X (Delete) when a file is selected? 00:14:22 micheline: Alan - where is this File Menu - I do not see it 00:15:13 Alan German: @Micheline You should see File - Home - Share - View across the top of File Explorer's window. 00:16:53 micheline: I see File, Home, Share and View at the top. 00:17:10 Tom Trottier: @micheline - it may be read-only 00:17:15 Alan German: @Micheline File is the one! 00:17:54 micheline: That is the default. What do I do? 00:18:13 micheline: Later 00:18:15 KW-G: 😇 is that what is wrong with Government now? Stephane retired???? 00:18:42 Alan German: @Micheline ...there is a large red X (Delete) when a file is selected... 00:20:06 micheline: Not on my laptop 00:20:24 Alan German: @Karen Partly. The real problem is that we have all retired! 00:21:03 Chris Taylor: @Alan (and @Karen) - all the good ones, anyhow... 00:27:16 Chris Taylor: The complete list can be found at https://www.ascii-code.com/ 00:28:30 Stew Bruce: A bar code like a novelty prize cheque 00:33:45 Tom Trottier: Some early computers did BCD arithmetic in hardware, I think IBM 704? 00:34:16 Tom Trottier: Cobol had a BCD data type 00:38:31 Tom Trottier: And PL/1 00:39:48 Tom Trottier: The reason is exactness in business processing. They could specify where the decimal point was & arithmetic was exact 00:41:31 Tom Trottier: There are programs which can extend calculations to even more precision & orders of magnitude 00:42:14 Alan German: @Micheline Are you using Window 10 or 11? File Explorer's menus are somewhat different. See: https://www.thewindowsclub.com/how-to-delete-files-and-folders-in-windows-10 00:43:18 micheline: My old laptop is using Windows 10 00:44:38 Tom Trottier: That's a pretty precise calculator for 1994.. 00:45:30 Alan German: @Micheline See "5] Using File Explorer Ribbon" in the Windows Cub link. It shows the usual ribbon menu for Win 10. 00:47:23 Tom Trottier: GIFs can only represent 256 unique colours 00:48:02 micheline: The Display in File Explorer on my laptop is nothing like that I section 5) I the article you quoted. 00:49:04 Tom Trottier: JPGs compression can be adjusted a lot. Check out the RIOT plugin for Irfanview 00:49:28 micheline: I can post what my file Explorer looks like on the Member Google group after this meeting 00:50:06 Alan German: @Micheline OK. Will take a look. 00:51:07 Tom Trottier: Early on, some display were pure vector, like an oscilloscope, but raster won 00:55:39 Tom Trottier: Capacitors and Inductors can put energy (back) into a circuit. 01:13:42 KW-G: Gobsmacked and Speechless!!!! I am now even more in awe of computer scientists, computers and AI! Plus, a lot more forgiving for my PC, tablet, phone, laptop, etc. when they have an occasional/rare hiccup... 01:19:06 Chris Taylor: @Karen - no kidding! 01:34:31 Harvey Hope: Chris, will there be a test on tonight's topic? 01:36:19 Chris Taylor: @Harvey - yes and if you fail, you have to prepare a presentation to the Group. I figure we will then have presentations for a few years. ha ha ha. I find this fascinating but I wouldn't stand a chance of truly understanding things. I do appreciate a bit of understanding of the complexity. 01:37:05 Harvey Hope: Agreed 🙂 01:39:39 Harvey Hope: Back in the days … analyzing program memory dump to determine what caused the problem. 01:42:05 Tom Trottier: Windows also creates dumps when you get a BSOD 01:42:30 Harvey Hope: Yes ... 01:48:24 Tom Trottier: ...except for assembly language programmers.... 01:51:45 Tom Trottier: And then there are multiple CPU cores....and threads... 01:55:44 Tom Trottier: The meaning "defect in a machine" (1889) may have been coined c. 1878 by Thomas Edison (perhaps with the notion of an insect getting into the works). In compounds, the meaning "person obsessed by an idea" (as in firebug "arsonist") is from 1841, perhaps from notion of persistence. The colloquial sense of "microbe, germ" is from 1919. 02:15:25 E O'Driscoll: OMG! I never learned the details of how numbers are added! Also the slide on vectors reminded me that there is a lot of math behind all electronic games... Calculus anyone? Instead of avatars, gamers are really pushing integrals around via the Xbox controller. 02:15:32 E O'Driscoll: Thanks Stephane! 02:16:33 Timothy the traveller: Lots of info. 02:17:19 Tom Trottier: That's called "binning" (apologies to brits) 02:17:32 Tom Trottier: each bin can run at diff speeds 02:17:34 Harvey Hope: Thanks Stephane … very informative! 02:17:48 Tom Trottier: ditto for bright LEDs 02:17:58 Tristan: The different CPU types are a result of disabling defective cores and selling it as a lower model. 02:19:18 Tom Trottier: What about RISC chips which Apple & Android use? 02:22:27 Tom Trottier: reduced instruction set computer 02:23:20 Alan German: What happens next? When do we run out of space on the chip for trillions of transistors? Do chips get bigger? 02:23:25 Tom Trottier: X86 also has various vector instructions 02:23:47 Edward Morawski: RISC refers to the physical instruction set that a CPU implements. It's called RISC because it uses fewer instructions that CPU's like the Intel CPUs. 02:24:16 Timothy: I remember years ago, that Assembler code was more efficient than compiled code in higher languages. 02:24:33 Stew Bruce: Steph really steamrolled through the presentation. I need time to process the instructions.... 02:26:54 E O'Driscoll: Thanks Stephane & everyone- I have to log off. 02:28:30 Edward Morawski: Thanks for the presentations! Sp much info!