The Navi Key is a concept which significantly reduces the number of keys on the phone's keypad. Nokia was the first company to launch a handset featuring a Navi Key in the year 1997.

The user interface of the phone is designed to follow the intuitive logic of the user. The phones equipped with the Navi Key can perform most of the function by just pressing the Navi Key.

Nokia 3110 was the first phone to sport a Navi Key menu navigation system. Later the Navi Key was incorporated on other Nokia handsets, especially the entry-level models such as Nokia 1100.

Another most confusing tech jargon is Time shifting. It is a process of recording and storing data for later viewing, listening, or reading. In television, time shifting can be done with a device called a personal video recorder (PVR) or a computer with a TV tuner card.

But now with the advent of the digital video recorder (DVR) the process has become much easier by using a electronic programme guide and recording shows onto a hard disk.

Earlier, videocassette recorders (VCRs) were used for recording data.

Digital television (DTV) is the sending and receiving of moving images and sound by discrete digital signals, in contrast to the analog signals used by analog TV.

One of the most significant advantages of DTV is that digital channels take up less bandwidth. This means that digital broadcasters can provide more digital channels in the same space, provide high-definition television service, or provide other non-television services such as multimedia or interactivity.

DTV also offers special services such as multiplexing (more than one programme on the same channel), electronic programme guides and additional languages, spoken or subtitled. In India, Reliance and AirTel are the two players with their Direct-To-Home (DTH) satellite TV service.

Digital television supports many different picture formats defined by the combination of size, aspect ratio (height to width ratio) and interlacing. High-definition television (HDTV) is one of the format that can be transmitted over DTV.

Ethernet is the local area network (LAN) technology. The technology was originally developed by Xerox for the Palo Alto Research Center Aloha network and later developed further by Xerox, DEC and Intel.

The most commonly installed Ethernet systems are called 10BASE-T and provide transmission speeds up to 10 Mbps. Devices are connected to the cable and compete for access using a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol. Ethernet is also used in wireless LANs.

100Base-T or Fast Ethernet supports data transfer rates of 100 Mbps and the Gigabit Ethernet supports data rates of 1 gigabit (1,000 megabits) per second. 10-Gigabit Ethernet provides up to 10 billion bits per second.

Another jargon that often stumps people is PC Suite. Wikipedia defines PC Suite as a software package used to establish an interface between Nokia mobile devices and computers that run Microsoft Windows operating system.

It can be used to transfer music, photos and applications. It can also be used to send Short Message Service (SMS) messages or act as a modem to connect the computer to the Internet. Nokia PC Suite is a proprietary software item and is required to access certain aspects of Nokia handsets.