About Google Accounts→
Use Gmail to access your Google Account
If you use Gmail, you already have a Google Account. With a Google Account, you have access to free Google products like Drive, Docs, Calendar, and more.
To sign in to your Google Account (or any Google product):
Go to the sign in page of the product (for Google Accounts it is myaccount.google.com).
Enter your Gmail username (everything that appears before '@gmail.com').
Enter your password.
Common issues
I don't think I have a Gmail account
New Google Accounts come with Gmail, so you should already have a Gmail address if you've created your account recently.
If you never created a Gmail account, you can sign up for free. To create a Gmail account:
Go to Gmail.com .
Select Create an account at the top right side of the page.
Follow the onscreen instructions.
I think I deleted my Gmail account
If you already have a Google Account and deleted your Gmail account, you can add Gmail to your current Google Account.
To add Gmail:
Go to mail.google.com.
Sign in to your Google Account.
Follow the onscreen information to add Gmail to your account.
When you add Gmail, your Gmail address will become the primary username on your account. It will be what others see when you share information, such as documents or photos, from your Google Account. Your original email address will become the recovery address on your account.
If you have more questions, visit the Gmail Help Center.
Age requirements on Google Accounts
Below are the minimum age requirements to own a Google Account:
United States: 13 or older
Spain: 14 or older
South Korea: 14 or older
Netherlands: 16 or older
All other countries: 13 or older
Google Accounts is a unified sign-in system that gives you access to products like Google+, Gmail, YouTube, and more.Learn more about Google Accounts.
Accounts in Apps for Education domains may have different age requirements.
Product-specific age requirements
Some Google products have specific age requirements. Here are a few examples:
YouTube: When a YouTube video has been age-restricted, a warning screen is displayed and only users who are 18 or older can watch it. Learn more about age-restricted videos.
Google Wallet: 18+
AdSense: 18+
AdWords: 18+
Disabled account due to incorrect birth date
In Google+ and other Google products, if you enter a birth date indicating you are not old enough to have a Google Account, your account may be disabled. If you incorrectly entered your birthdate, learn how to re-enable your Google Account.
Frequently Asked Questions about creating a Google Account
Your Google profile
Q: Can I use Google products without a Google Account? A: Yes. You can do things like search on Google and watch videos on YouTube without signing in to a Google Account.
Q: Can I use Google products without a Google profile? A: Yes. A Google profile is only necessary if you want to share publicly or use Google+. A profile helps you communicate with the people you know from a variety of Google products — for example, sharing driving directions from Google Maps or sharing a video from YouTube. Your Google profile lets you control the details you share about yourself, not only on Google+ but through services like Gmail and Web Search.
You do have the option to delete your Google profile at any time. After you've created your account, you can remove your Google profile and associated Google+ features through My Account. You can also download your data, including your profile, photos, and contacts, to your computer if you want a copy of it.
Q: Is my Google profile visible to everyone on the web? A: Yes, but you can choose how much or how little to share. The name is the only part of a profile that must be public. If you choose to share other information, such as interests, hometown or email address, you can decide who gets to see it. On your Profile and privacy settings page, you can change the information on your profile, as well as who can see what details. Learn more about sharing information on Google+.
Q: Will my Gmail address or other contact information be visible on the web? A: Your Gmail address and other contact information will not be public on your profile by default. If you want to share this information with others, you can share it with certain contacts or make it public by managing your profile settings.
Q: What does it mean that Google may use my information to personalize content and ads on non-Google websites? A: Personalization on non-Google websites allows Google to tailor +1 content and ads to you across the Web, based on your Google profile, +1 activity, and social connections. For example, say your friend clicks the +1 button to recommend a movie on an entertainment site. If you visit the site, you might see your friend’s +1 next to the movie, helping you decide what to watch on Friday.
Q: Why do I see my profile picture and name sometimes when I sign in? A: To help make sign-in easier and more personal, you may see a screen with your profile picture and full name when signing in to Google. We’ll only show this information if you are signing in from a location or device you’ve signed in from before, like your home computer.
Also, if you have multiple Google accounts (for example, personal and work), you can set up different profile picturesfor each of your accounts to easily tell them apart.
You can always change your profile photo if you want a different image to show, or you can remove your photo fromprofile settings if you don’t want your profile picture to appear at all.
Google sign-in
Q: What is the Google sign-in process like? A: When you sign in to Google, you'll first enter your email address (which is your username), and select Next. Then, you'll enter your password and select Sign in. If you're a 2-step verification user or signing in from an unknown device, you might be asked to complete additional steps to verify your identity.
To help make sign-in more personal, you may see a screen with your profile picture and full name when signing in to Google. We’ll only show this information if you are signing in from a location or device you’ve signed in from before, like your home computer.
Email addresses and Gmail
Q: Is my Google Account username the same as my Gmail username? A: Your Google Account username is your username across all of Google, including Gmail. You can sign in to any Google service with your Google Account username and password.
Q: How will Google use my email address? A: We’ll use your new Gmail address to send you notifications from Google services. However, we may use your other email address to help you get back into your account if you lose your password, or for certain notifications such as if we suspect that your account has been compromised.
Q: Why do I get a Gmail address with my Google Account? A: We like Gmail a lot, and if you try it out, we hope you will too! However, if you decide not to use Gmail, and instead want a different email address associated with your Google Account, you can cancel your Gmail address.
Q: Can I sign in to my Google Account with my current, non-Gmail email address? A: If you’d like to sign in with your current email address, you can always add an alternate email address to your account. That way, you can sign in to your Google Account with either your alternate email address or your primary Gmail address.
Account Settings
Q: How can I change my sign-in preference? A: When you sign up, the “Stay signed in” option is turned on automatically, so you don’t have to enter your username and password every time you want to access a Google service. (We do periodically ask you to sign in, and you can always sign out whenever you want.) You can always turn this setting off by unchecking the “Stay signed in” option on the Google sign-in page.
Q: How can I change my Search History settings? A: Search History helps deliver more personalized search results based on your web activity, including your previous searches. When you sign up for a Google Account, Search History is automatically enabled. You can turn search history on or off at any time. To view, control, and delete your saved activity, visit My Activity.
GPS (Eng Global Positioning System -. Global Positioning System, read JPS) - satellite navigation system that provides a measurement of the distance, time and determines the location in the global WGS 84 coordinate system.
Allows you to anywhere in the earth (except polar regions), almost whatever the weather, and in the near-Earth space to determine the location and speed of objects. The system is designed, implemented and operated by the US Department of Defense, at the same time is currently available for use for civilian purposes - only the navigator or other device (eg smartphone) with a GPS-receiver.
The basic principle of using the system - positioning by measuring reception timings synchronized signal from the navigation satellite antenna consumer. To determine the three-dimensional coordinates of the GPS-receiver need to have four equations: "Distance is the product of the speed of light on the difference between the moments of signal reception by the consumer and the date of its synchrotron radiation from satellites»: {\ displaystyle | x-a_ {j} | = c (t_ {j } - \ tau)} | x - a_ {j} | = C (t_ {j} - \ tau). Where: {\ displaystyle a_ {j}} a_ {j} - location {\ displaystyle {j}} {j} th satellite, {\ displaystyle t_ {j}} t_ {j} - time signal reception time of {\ displaystyle {j}} {j} th satellite bounds consumer, {\ displaystyle \ tau} \ tau - an unknown point in time synchrotron radiation signal on the clock all the satellites of the consumer, {\ displaystyle c} c - the speed of light, {\ displaystyle x } x - an unknown three-dimensional position of the user.)
GPS состоит из трёх основных сегментов: космического, управляющего и пользовательского[4]. Спутники GPS транслируют сигнал из космоса, и все приёмники GPS используют этот сигнал для вычисления своего положения в пространстве по трём координатам в режиме реального времени.
Космический сегмент состоит из 32 спутников, вращающихся на средней орбите Земли.
По состоянию на 1 июня 2014 года используются по целевому назначению лишь 29 КА. На этапе ввода в систему 1 КА, выведены на техобслуживание 2 КА.
Управляющий сегмент представляет собой главную управляющую станцию и несколько дополнительных станций[5], а также наземные антенны и станции мониторинга, ресурсы некоторых из упомянутых являются общими с другими проектами.
Пользовательский сегмент представлен приёмниками GPS, находящихся в ведении государственных институтов, и сотнями миллионов устройств, владельцами которых являются обычные пользователи.
GSM
The GSM logo is used to identify compatible handsets and equipment. The dots symbolize three clients in the home network and one roaming client.[1]
GSM (Global System for Mobile Communications, originally Groupe SpécialMobile), is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile phones, first deployed in Finland in July 1991.[2] As of 2014 it has become the defacto global standard for mobile communications - with over 90% market share, operating in over 219 countries and territories.[3]
2G networks developed as a replacement for first generation (1G) analog cellular networks, and the GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony. This expanded over time to include data communications, first by circuit-switched transport, then by packet data transport via GPRS (General Packet Radio Services) and EDGE (Enhanced Data rates for GSM Evolution or EGPRS).
Subsequently, the 3GPP developed third-generation (3G) UMTS standards followed by fourth-generation (4G) LTE Advanced standards, which do not form part of the ETSI GSM standard.
"GSM" is a trademark owned by the GSM Association. It may also refer to the (initially) most common voice codec used, Full Rate.