Wikipedia:Reference desk/Archives/Computing/2016 September 9
Computing desk | ||
---|---|---|
< September 8 | << Aug | September | Oct >> | September 10 > |
Welcome to the Wikipedia Computing Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
September 9
[edit]Business Web Design
[edit]When I hear "business web design" I think of two things: Online market and content management system. I've seen "business web design" as a course listing as multiple universities and read their descriptions. They just reword the title as something like "Professional web design for a business environment." Is it the opinion of the good editors here that online market and content management system covers the topic of business web design? 209.149.113.4 (talk) 13:19, 9 September 2016 (UTC)
- Please see the header for the purpose of this forum. We do not honor requests for opinions. If you have references (links to sources of information) we can provide for you, please request that. --Jayron32 15:02, 9 September 2016 (UTC)
- While "opinions" are not for the RD, it seems a reasonable request... but rather for Wikipedia:Reference_desk/Language. TigraanClick here to contact me 15:45, 9 September 2016 (UTC)
How can I hack a pocket camera?
[edit]I have a pocket camera whose settings are set automatically. Although it does a good job, sometimes I'd like to set things like exposure time or diaphragm by hand.
Is there a way of starting a different OS on it? It has an sd-card slot and it is a Sony Cybershot. --Llaanngg (talk) 16:36, 9 September 2016 (UTC)
- Can you provide us with the manufacture name and the model of your camera? Ruslik_Zero 20:18, 9 September 2016 (UTC)
- This kind of task is going to be "nearly impossible" unless you have a few advantages:
- Do you have detailed knowledge of the hardware, including schematics and blueprints and datasheets?
- Do you have expertise in programming other small microcomputers?
- If you don't have both of those, it's a near certainty that you won't be able to "hack" the unknown design of a retail-market consumer camera. Perhaps you should consider buying a camera that is specifically designed for programmability?
- Here are details of the "Frankencamera", a research project aimed to help users modify the behavior of the Nokia N900 device. Bear in mind that the original team who "hacked" that device (rather, wrote custom software for it) had significant funding (money!!) and support (engineering man-hours!!) from important partners in industry, academia, and the Department of Defense.
- One of the best ways to "hack" a camera is to do the following:
- Excel in formal academic training, specifically in the areas of physics, mathematics, electronics engineering, and computer science
- Seek admission to a research team or research program who have experience working with these sophisticated modern devices
- Spend a lot of hours learning how current cameras work, before trying to modify them to do something new.
- These devices are incredibly complicated. A recent public statement by Apple's chief of marketing, Phil Schiller, estimated that the vector-processing supercomputer inside an iPhone camera uses 100 billion operations each 25 milliseconds - that's a lot of computation, and if you think you want to hack it, it's worth your time to test your mettle first on a simpler problem!
- Nimur (talk) 20:54, 9 September 2016 (UTC)
- I see that changing the firmware can be quite complicated. But as an alternative there is a CHDK (Canon Hack Development Kit) which is a substitute firmware that allows users to customize their cameras. There could also be something like this for my Sony. There are certainly some projects who aspire to produce this, but the ones I found were in their infancy. Or even better, there could exists a kind of live OS that would run in any camera, like a live Cd runs a computer. Although I am afraid that the cameras are way too different from each other, and do not implement a unifying standard. Llaanngg (talk) 12:06, 10 September 2016 (UTC)
A bit off topic, about hacking. |
---|
The following discussion has been closed. Please do not modify it. |
|
Is there alternative firmware or reengineerable firmware upgrade avail. Does the CPU have a diagnoes or debug port? Did somebody this before? Yes? It can save huge amount of time, but know anything You do can make the camera become less useful. --Hans Haase (有问题吗) 10:09, 11 September 2016 (UTC)
Google sign-in
[edit]Using 'Edge' browser in Windows 10. When I sign in to Google, with "Remember me" switched off, then open a different website in a new tab, then close the Google tab, then reopen google.com, I am still signed in to Google. However, when I close the whole browser and restart, then go back to google.com, I am signed out. How does Google distinguish these cases? How does it know whether I shut down the whole browser or just its own tabs? (Please note that I am not asking for advice about which browser to use, nor seeking advice to switch to a different browser or operating system. Thanks.) 81.152.193.175 (talk) 20:56, 9 September 2016 (UTC)
- When you sign in to something in your browser, the site you're signing in to sets a session cookie. Your browser then sends this cookie along whenever it talks to that site. This is how the site identifies you. Google doesn't actually "know" whether you closed a tab or whatever. It just sees whatever cookies your browser sends it. Browsers are generally configured by default to keep cookies around until they expire. This expiration time is set by the site, and can be far in the future. Cookies can also be set to expire at the end of a browser session. This is what happens if you don't select the "Remember me" option. Your Google session cookie stays around until you close the browser. Closing a tab doesn't do anything because the browser authors didn't program it that way. (What actually happens under the hood is the cookie isn't written to disk, unlike "permanent" cookies. It's just stored in the browser's memory. When the browser process terminates, the cookie disappears along with everything else in the process memory.) In some browsers you can modify this behavior by installing browser extensions. --47.138.165.200 (talk) 01:57, 10 September 2016 (UTC)
- Thank you for your very helpful reply. 109.146.248.82 (talk) 10:53, 10 September 2016 (UTC)