IT Essentials Chapter 8- Key Terms

Push and pull

When a user runs the Google Play app or the Apple App Store app from a mobile device, apps and content that are downloaded are pulled from a server to the device. With Android devices, a user can browse Google Play using any desktop or laptop computer and purchase content. The content is pushed to the Android device from the server. IOS users are able to purchase content from iTunes on a desktop or laptop computer that is then pushed to an iOS device.

Pairing

When two Bluetooth devices establish a connection to share resources. The Bluetooth radios are turned on, and one device begins searching for other devices. Other devices must be set to discoverable mode, also called visible, so that they can be detected.

Wi-Fi

Wireless Fidelity. Any type of computer network that is not connected by cables of any kind.

Pinch

Zoom out from objects, such as photographs, maps, and text. Touch the screen with two fingers and pinch them together to zoom out from the object.

Mobile device

a small handheld computing device, typically has a display screen with a touch screen or miniature keyboard weighs less than 2 lb. It has an operating system and can run application software. Most have Wi-Fi, Bluetooth and GPS capability and include a camera and media player.

MIME

A standard that extends the email format to include text in ASCII standard format as well as other formats, such as pictures and word processor documents. Normally used in conjunction with SMPT.

QR code

A type of bar code that is designed to be scanned by the camera of a mobile device. It is similar to a bar code but can contain much more information.

Cellular data

A wide-area network that has the technology for the use of a cell phone or laptop for voice and data communications.

Bluetooth

A wireless industry standard that uses an unlicensed radio frequency for short-range communication, enabling portable devices to communicate over short distances.

iTunes

Apple's media player and media library that can be used to download and install content and applications to Apple devices.

Field-serviceable parts

Components that can be repaired or refurbished on the job site without having to replace the part.

Capacitive

Consists of a glass screen coated with a conductor. Because the human body is also a conductor, touching the screen interrupts the electrical field of the screen. This change is measured by the touch processor to determine the vertical and horizontal location of the touch on the screen.

Remote wipe

Deletes all data from the device and returns it to a factory state without having the device in hand.

GPS

Global Positioning System. A navigation system that determines the time and location on Earth using messages from satellites in space and a receiver on Earth.

Passcode lock

Locks a device and puts it in a power-saving state. The lock can also be delayed to engage after a specified amount of time passes after the device goes into the power-saving state.

Double touch

Mobile devices can detect when two or more points of contact are made on the screen. For example, for zoom items such as photographs, maps, and text touch the screen twice quickly to zoom in, and touch the screen twice quickly again to zoom out.

Multi-touch

Mobile devices have the ability to recognize when two or more points of contact are made on the screen.

2G

Mobile devices that made the change from using analog standard to digital standards which provided better call quality. GSM & CDMA

1G

Mobile devices that primarily used analog standard in which voice and noise signals were hard to distinguish.

MMS

Multimedia Message Service. The protocol used in picture and video text messaging.

Home screen

Multiple screens organized for easy access to icons and widgets. These screens can be customized to user preference.

App

Programs that are executed on mobile devices. Mobile devices come with a number of different apps preinstalled to provide basic functionality.

iCloud

Provides email and the ability to store content on remote servers for Apple mobile device users.

SMS

Short Message Service. The protocol used in text messaging

3G

Standards that enable mobile devices to go beyond simple voice and data communications. It is now common for mobile devices to send and receive text, photos, audio, and video. CDMA2000 & EV-DO

4G

Standards that provide ultra-broadband Internet access. Higher data rates allow users to download files much faster, perform video conferencing, or watch high-definition television. LTE & WiMax

SIM card

Subscriber Identity Module.This small card contains information used to authenticate a device to mobile telephone and data services. SIM cards can also hold user data such as contacts and text messages.

Open source

The developer's programming code, known as source code, is published when it is released. The public can change, copy, or redistribute the code without paying royalty fees to the software developer.

Data synchronization

The exchange of data between two or more devices while maintaining consistent data on those devices.

Brightness

The glow of the display on a laptop screen. Levels can be adjusted to make the screen more readable in varying degrees of light.

Slide

The user slides an icon, such as a lock or an arrow, to unlock the device. This option is the least secure.

Proximity sensor

Turns off the touchscreen when the phone is up to your ear and turns it on when you pull the device away from your ear on some smartphones. This prevents icons or numbers from being activated by contact with your face or ear, and also saves power.

IMAP

Used by local email clients to synchronize and retrieve email from a server and leave email on the server.

Flash memory

A rewritable memory chip that retains data after the power is turned off.

Accelerometer

A sensor in a mobile device that detects the orientation of the device. An example of this technology at work is the auto rotate screen mode.

Airplane mode

A setting on a mobile device that turns off all cellular, Wi-Fl. and Bluetooth radios. Airplane mode is useful when traveling on an airplane or when located where accessing data is prohibited or expensive.

Widgets

A small program that runs to launch larger programs.

Automatic rotation

A feature on a mobile device which enables the display screen to change from portrait to landscape when the device detects that it has been turned on its side.

Rooting

A hack that involves unlocking the bootloader and giving Android users access to the root directory and the OS which opens the phone to customization that is not normally available to the user.

Jailbreaking

A hack that involves unlocking the bootloader and giving iPhone users access to the underlying operating system of iOS and opens the phone to customization that is not normally available to the user.

Navigation

A mapping app that provides turn-by-turn directions to a place, address, or coordinates.

Tethering

A mobile device can connect to another mobile device or computer to share a network connection.

Memory card

Also known as flash card, is an electronic flash memory data storage device used for storing digital information.They are small, re-recordable and able to retain data without power. They are commonly used in many electronic devices, including digital cameras, mobile phones, laptop computers, MP3 players and video game consoles.

POP3

An application layer protocol used to allow clients to communicate with email servers. Removes email from server.

SMTP

An email protocol servers use to send ASCII text messages.

Resistive

An input device that consists of transparent layers of material capable of conducting electricity, and it allows users to physically interact with what is shown on the screen and type on a virtual keyboard.

Touchscreen

An interactive LCD or CRT monitor that detects when something is pressed on it.

Navigation

Android OS uses these icons on the home screen to perform functions such as returning to the home screen, accessing recently opened apps, context screen menu, and a back button.

Sideloading

Another way to install apps on mobile devices. Apps can be downloaded from different sources on the Internet and transferred to a mobile device through Wi-Fi, Bluetooth, data cable, or other methods. It is not recommended because many sources for apps cannot be trusted it is recommended to only install apps from trusted sources and developers.

Home

Apple iOS navigation button that allows a user to perform a variety of functions such as, wake the device, start Siri, open Search, and more.