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How to install Windows 8.0 From XP: everyone can enjoy

And here it is: after several months of waiting, some pirated editions and prerelease officially released by Microsoft in June, Windows 8.1 is finalized . Redmond has already distributed to manufacturers of PC and tablet, and has also delivered to account holders MSDN and TechNet. In fact, this is the version RTM (Ready To Manufacturing) , who should know that very few changes by the version available in stores and on Windows Update. You may already recovered this version by some means or another? Or would you rather wait until October 17, when the operating system will be officially available to the common man? In any case, here is a series of questions and answers that should help you regardless of your configuration. Windows XP , Windows Vista ,Windows 7 , Windows 8 or even Windows 8.1 , and all systems will be discussed in this folder .

How to enjoy Windows 8.1?

Microsoft has not officially announced the minimum configuration of the final Windows 8.1 , but the company did on the preview release last June. As there is no reason to change that in such a short time, you can already find the minimum vital to the new OS run: a 1 GHz processor , 1 GB (32-bit) or 2 GB RAM (64-bit) , and between 16 GB and 20 GB of space on the hard disk. Besides a graphics card to the minimum compatible with DirectX 9 . Clearly, any PC released in the last ten years can do the trick, with of course, the best results in terms of speed and responsiveness of the latest equipment.
Another point, the method of updating. Thereupon, Microsoft has made it clear it is possible to migrate from any version of Windows, but the result differs. Since XP and Vista for example, Windows 8.1 erases all data from older versions of the OS (it is therefore not an update but a complete reinstallation). It is therefore necessary to make a backup of your personal data first.Windows 7, however, it retrieves its data, but it is necessary to reinstall all programs. Finally, under Windows 8.0 , it is as if they were to install a service pack. Therefore no need to reinstall anything.All installation procedures are also detailed in the following pages .

iOS 7: few steps to increase the battery life

Quit apps
Who wants to have some of its long battery should look at now and again, which apps running in the background. Many programs continue to run even when they should actually be paused. Pay particular attention to all the apps that query your location - it costs a lot of energy. 's how it works: Press twice to your home button. Then push unwanted apps with a finger upward from the screen.

Control Center

Both the lock screen as well as in normal home screen you can use the new Control Center. In addition to useful shortcuts you can find the way to manage settings like WiFi, Bluetooth, airplane mode and night. Basically: What is not being used, can get away. Night and flight mode switch also still receiving or notifications from. 's how it works: Simply click on the on the bottom of the screen wipe screen to the center. The Control Center appears and is immediately ready for use.

Automatic downloads
iOS 7 allows you to download all iTunes and App Store content automatically. This is in some cases practically , but mostly unnecessary. Turn off this feature in the menu, you prevent both accidental data as well as a little energy consumption. 's how it works: iTunes & App Store Settings ➤ ➤ Automatic Downloads on / off

Location services
The GPS chip and the location services are real energy hogs - as soon as the iPhone retrieves the current position, the percent tumble. Therefore: turn off everything that is not absolutely needed. iOS 7 for example, uses frequently the weather, since the new message center location and weather prospects can view. 's how it goes: Privacy Settings ➤ ➤ location services and deselecting

Time Zone
Those who do not travel often, always adheres basically only one time zone. By switching off the automatic time zone search you also save a few percent. 's how it goes: Settings ➤ General ➤ ➤ Setting the date & time Automatic on / off

Dynamic Backgrounds
iOS 7 now offers dynamic backgrounds. The seven colored backgrounds with a small animation. What looks good at first glance, costing you precious battery life. Better your own photo or any other static image. 's how it goes: Backgrounds & brightness settings ➤ ➤ ➤ Dynamic Background or choose frames

3D effect
The new 3D-effect (also called parallax effect) is impressive. If you move the iPhone, the screen aligns new and shows very dynamic. However, since this effect is activated in the lock screen, it can cost a lot of energy over time. Therefore:., If you do not need to shut it And so it goes: Accessibility Settings ➤ General ➤ ➤ ➤ reduce motion motion reduce to / from

Background update
Some apps call in the background from Internet and position data. In individual cases, but that is quite useful, mostly not necessary. Meet here the right choice for you and turn off all other apps. It is important that you regularly check for the installation of new programs, if an entry is added. 's how it goes: Settings ➤ General ➤ Background update

How to install iOS 7 on iPhone or iPad

iOS 7 is finally available now for iPhone, iPad and iPod touch. If yesterday we saw the right thing to have before updating to iOS 7, including backup of its data, today here are the steps to put the phone up to date.

The update of the iPhone is not a very complicated task, but nevertheless worth a minimum of attention. Once you have verified that your device is compatible and made backups, two options are available to you: make a good old normal upgrade via iTunes, or to update "over the air", Wifi, directly on your phone.

The first solution is the most traditional and best known, simply plug in your USB device and wait until the computer detects it. iTunes will notify you that an update is available, if this is not the case, you can search should find iOS 7. Just to clarify that the version of iTunes 11.1, all freshly output is required to install iOS 7 , so this is a download that you should consider in advance if you have not already done so. You just have to simply click on the "update" button to download the system starts.The rest of the procedure is automatic and will take several minutes for iOS is downloaded and transferred to your device.

Regarding the update "OTA" (over the air), it is even easier, since you have to go through the phone menu via Settings> General> Software Update to find it. Again, the system will notify you that an update is available, and click on "Install" initiate the process. Note however that in this mode, it is strongly recommended to keep her connected to a power source to prevent the battery from falling in the harbor during the update unit, which could be fatal. Similarly, the update will not start if the battery level is below 50%.

Once the installation is complete, conventional settings will be required, such as a Wi-Fi network and your Apple ID, particularly in order to recover any backup iCloud . If you have updated your device from iTunes, this is supposed to restore the last backup date of your data, allowing you to find any. If this is not the case, it is obviously possible to restore a previous backup.

Usability

What is usability?

User friendly
–No need m/c to friendly
Different users have different needs
A system that is “friendly” to one may feel very tedious to another

•Use other terms

–CHI

–HCI

–UCD

–MMI

–HMI

–OMI

–UID

–HF

–Etc

System Acceptability

•Social acceptability

•Practical acceptability

Definition of Usability

•5 usability attributes:

–Learnability

–Efficiency

–Memorability

–Errors

–Satisfaction

Learnability

•The system should be easy to learn for novice users

•Highly learnable systems have a steep incline for the first part of the learning curve and allow users to reach a reasonable level of usage proficiency within a short time

•Zero efficiency at zero time except walk-up-and-use systems

•Easy to measure

Efficiency of Use

•The system should be efficient to use for expert users, so that once the users has learned the system, a high level of productivity is possible

•Test users are asked to use the system for a certain number of hours, after their efficiency can be measured

–In terms of number of seconds to do a specific task

Memorability

•The system should be easy to remember, so that casual user is able to return to the system after some period of not having used it, without having to learn everything all over again

•“Kiss and Ride”

•2 ways of measuring

–Measure the time needed for casual users to perform some typical test tasks

–Memory test

•After finishing the test session explain the effect of various commands or name the command

Few and non catastrophic errors

•The system should have a low error rate, so that users make few errors during the use of the system, and so that if they do make errors they can easily recover from them

•Error is defined as any action that does not accomplish the desired goal

•Measured by counting the number of such actions

Subjective satisfaction

•The system should be pleasant to use, so that users are subjectively satisfied when using it; they like it

•Can be measured by

–Psychophysiological measures

–Asking subjective opinion

•Likert scale

•Please indicate the degree to which you agree or disagree with the following statements about the system

A.It was very easy to learn how to use this system

1=strongly disagree 2=partly disagree 3=neither disagree nor agree 4=partly agree 5=strongly agree

A.Using this system was a very frustrating experience

B.I feel that this system allows me to achieve very high productivity

C.I worry that many of the things I did with this system may have been wrong

D.This system can do all the things I think I would need

E.This system is very pleasant to work with

Semantic differential scale

•Please make the positions that best reflect your impression of this system

Pleasing - - - - - - - - Irritating

Complete - - - - - - - - Incomplete

Cooperative - - - - - - - - Uncooperative

Simple - - - - - - - - Complicated

Fast to use - - - - - - - - Slow to use

Safe - - - - - - - - Unsafe

Hyper Text Transfer Protocol - HTTP

IT , Web Development

HTTP

•HTTP stands for Hypertext Transfer Protocol. It is an TCP/IP based communication protocol which is used to deliver virtually all files and other data, collectively called resources, on the World Wide Web. These resources could be HTML files, image files, query results, or anything else.

An HTTP conversation

HTTP is the set of rules governing the format and content of the conversation between a Web client and server.

HTTP Message

• HTTP uses the client-server model: An HTTP client opens a connection and sends a request message to an HTTP server; the server then returns a response message, usually containing the resource that was requested. After delivering the response, the server closes the connection.

HTTP transaction

HTTP Message

The format of the request and response messages are similar and will have following structure

- An initial line

- Zero or more header lines

- A blank line

- An optional message body like file, query data or query output.

HTTP Methods

GET
POST
HEAD

HTTP Request Types

•GET (default) and POST do basically the same thing: Send data from the client to the server.

However, they have some differences:

•GET

–Appends form data directly to the end of the UR— visible to users

(not suitable for sending passwords)

–Limited to 2,048 characters for the entire URL

–Result page can be bookmarked and cached

•POST

–Sends form data in the HTTP request—invisible to users

–Virtually no limit (but check your specific configuration)

–Results are not cacheable or bookmarkable

The HEAD Method
A HEAD request is just like a GET request, except it asks the server to return the response headers only, and not the actual resource (i.e. no message body). This is useful to check characteristics of a resource without actually downloading it, thus saving bandwidth. Use HEAD when you don't actually need a file's contents.

The response to a HEAD request must never contain a message body, just the status line and headers.

HTTP Header Fields

•Allow

•Authorization

•Content-Encoding

•Content-Length

•Content-Type

•Date

•User-Agent

•Referer

•Server

HTTP Status Codes

Example of an HTTP Request from a Web browser

HTTP version 1.1 specifies a persistent connection by default.

scenario in which an electronic store can benefit from the use of cookies. Assume a shopper wants to buy a toy from an electronic store named BestToys. The shopper browser (client) sends a request to the BestToys server.

Introduction to Web Technologies

IT , Web Development

Content

1.html
2.Clients softwares
3.Servers
4.Client side technologies
5.Server side technologies
6.Database Servers
7.PHP

Find download link of this presentation from the bottom of this post.