Comparing Wi-Fi vs Bluetooth
Bluetooth technology is useful when transferring information between two or more devices that are near each other when speed is not an issue, such as telephones, printers, modems and headsets whereas Wi-Fi is better suited for operating full-scale networks because it enables a faster connection, better range from the base station.
Wi-fi has better security than Bluetooth. Bluetooth is cheaper than Wi-fi.
Finaly, Bluetooth can transfer data up to 2.1 MB per Second whereas Wi-fi can transfer data up to 600 MB per second.
Bluetooth is mostly used by device such as Mobile phones, mouse, keyboards, office and industrial automation devices whereas Wi-fi is used by device such as Notebook computers, desktop computers, servers, TV, Latest mobiles.
Comparing Firewire vs USB
Firewire
FireWire is Apple’s name for their high speed interface standard previously known as IEEE-1394. The intention to develop FireWire was to provide a replacement for the parallel SCSI bus while also providing connectivity for digital audio and video equipment. FireWire allows multiple devices to be connected to a single adapter with blistering speed.
The earlier FireWire 400 standard is capable of transferring data between devices up to 400 Mbit/s, and allows up to 63 devices connecting simultaneously on a single controller. Additionally, the “Peer-to-Peer” architecture of FireWire also makes it possible for devices to communicate without the need of a CPU.
FireWire 800 (or IEEE 1394b) improves the previous FireWire data transfer rate up to 800 Mbit/s.
USB
USB stands for Universal Serial Bus. It was designed primarily to replace serial and parallel ports on personal computers to eliminate the need of developing separate device drivers.
USB also allows multiple (up to 127) devices to be daisy-chained together in a single USB port using additional USB hubs, but unlike FireWire, USB needs the presence of a CPU to control the bus and the data transfer, making it less versatile compared to FireWire.
The first generation of USB has a data transfer rate up to 12Mb/s, while the later USB 2.0 standard allows up to 480 Mb/s data transfer rate.
Magnetic Storage
One of the common aspects of modern computer hardware is a technology known as a magnetic storage device. This is a technology available in multiple forms, such as a floppy disk drive, a tape drive and a hard drive. The most popular one is hard drive. It can hold out at least a terabyte of information both internal and externally which is as enough different music to listen to while working a full-time job for an entire year. On the other hand floppy held 1.44 megabytes (MB) of data, or roughly 750 text-only pages (750 pages is about a ream and a half of paper).
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