What are irda rfid and wireless applications protocol?

The initials IrDA stand for Infrared Data Association.

IrDA is a non-profit trade association with a membership of over hundreds of companies in the computers and telecommunications industry, including components, hardware, software, & adapters manufacturers.

The IrDA standard is a set of specifications for providing a universal two-way wireless infrared data communications, based on a practical cost, short-range point-to-point user model.

The standard defines the physical characteristics of the interface, the communications protocols that provide for different needs, and the transmission speeds at which the infrared device communicates.

The two basics of the infrared communication standards are IrDA-Data and IrDA-Control.

IrDA-Datadefines the standard for the wireless, two-way infrared data transmission between two devices and consists of a set of mandatory protocols: PHY (Physical), IrLAP (Link Access), and IrLMP (Link Management).

IrDA-Controlis the infrared standard that allows wireless peripherals such as keyboards, mouse, game pads, joysticks, and other pointing devices to interact with many types of host devices. Host devices include PCs, home appliances, game consoles, and TV/Web set top boxes.

IrDA-Control is not the same as the standard TV Remote Control. IrDA-Control has its own set of mandatory protocols: PHY (Physical), MAC (Media Access Control), and LLC (Logical Link Control).

RFID stands for Radio-Frequency IDentification. The acronym refers to small electronic devices that consist of a small chip and an antenna. The chip typically is capable of carrying 2,000 bytes of data or less.

The RFID device serves the same purpose as a bar code or a magnetic strip on the back of a credit card or ATM card; it provides a unique identifier for that object. And, just as a bar code or magnetic strip must be scanned to get the information, the RFID device must be scanned to retrieve the identifying information.

Short for the WirelessApplication Protocol, a secure specification that allows users to access information instantly via handheld wireless devices such as mobile phones, pagers, two-way radiOS, smartphones and communicators.

WAP supports most wireless networks. These include CDPD, CDMA, GSM, PDC, PHS, TDMA, FLEX, ReFLEX, iDEN, TETRA, DECT, DataTAC, and Mobitex.

WAP is supported by all operating systems. Ones specifically engineered for handheld devices include PalmOS, EPOC, Windows CE, FLEXOS, OS/9, and JavaOS.

WAPs that use displays and access the internet run what are called microbrowsers--browsers with small file sizes that can accommodate the low memory constraints of handheld devices and the low-bandwidth constraints of a wireless-handheld network.