Samsung Galaxy Tab A9 64GB Wi-Fi DE graphite

Size of the display for this product, measured diagonally, usually in inches.

The number of distinct pixels in each dimension that can be displayed. It is usually quoted as width × height, with the units in pixels: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels. The higher the number of pixels, the sharper the image.

The technology used in the display e.g. plasma, LED.

Brightness is the amount of radiating light emitted from the screen. The brightness rating is measured in candellas per square meter, commonly known as 'nits'.

There are a variety of touchscreen technologies that have different methods of sensing touch, including resistive and capacitive.

Type of supported High Definition (e.g. Full HD, 4K Ultra HD).

The manufacturer that produced the processor.

A family of processors is a group of processors produced by one company over a short period of time e.g. Intel Pentium processors.

The number of central processing units ('cores') in a processor. Some processors have 1 core, others have 2 (e.g. Intel Core Duo) or more (e.g. the Intel Xeon E7-2850 has 10 cores).

The turbo boost is an automatic, managed accelleration of the processor when one of the cores is overloaded.

The speed that the microprocessor executes each instruction or each vibration of the clock. The CPU requires a fixed number of clock ticks, or cycles, to execute each instruction. The faster the clocks rate, the faster the CPU, or the faster it can execute instructions. Clock Speeds are usually determined in MHz, 1 MHz representing 1 million cycles per second, or in GHz, 1 GHz representing 1 thousand million cycles per second. The higher the CPU speed, the better a computer will perform.

A computer's memory which is directly accessible to the CPU.

The amount e.g of data which can be stored inside the device.

A card reader is a device that enables reading and, in some cases, writing data to and from a memory card.

Types of memory cards which can be used with this product.

The maximum size of memory card that can be used with this device.

System used to play music or speech.

Indicates the type of the camera at the back of the product, dual or single.

The resolution of the images produced with the rear camera, given in MP (megapixel. 1 MP = 1 million pixels).

Indicates the digital zoom capacity, the number of times that the picture is enlarged thanks to digital technology.

Device focusing a camera or other piece of equipment automatically.

Whether or not the rear camera features its own flash.

Recording moving visual images.

This is the maximum resolution of video images. Resolution is a measure of the degree of detail visible.

Camera at the front of the product.

Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.

The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).

Connection of this device is done via Wi-Fi in a high standard.

The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.

Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.

How headphones connect to a device e.g. wirelessly or via a cable and connector.

Type or category of the device.

The shape or design of the product.

The colour e.g. red, blue, green, black, white.