Source : http://en.wikipedia.org/wiki/Personal_area_network
they just work they just work,work,work
the work a machine does is the work outputwhat it takes to do the work is the work inputSources;The_work_that_the_simple_machine_does_is_called_the_work
the work a machine does is the work output what it takes to do the work is the work input
The work done by a machine is called work output
work output
WPAN was created on 1984-02-14.
3 feet
802.15.1
Wireless Personal Area Network.
A WPAN ( wireless personal area network) is a low range wireless network which covers an area of only a few dozens of meters. this kind of networks generally used for connecting devices like printers, mobile phones, PDA to a computer or just two nearby computers without using wires.
Body area network (BAN), wireless body area network (WBAN) or body sensor network (BSN) are terms used to describe the application of wearable computing devices.[1][2][3] This will enable wireless communication between several miniaturized body sensor units (BSU) and a single body central unit (BCU) worn at the human body.[4][5] The development of WBAN technology started around 1995 by considering wireless personal area network (WPAN) technologies for communications on, near and around the human body. Later around 2001, this application of WPAN has been named as body area network (BAN) to represent the communications on, in and near the body only.[6][7] A WBAN system can use WPAN wireless technologies as gateways to reach longer ranges.-nithin ravi
Wireless networks work similar to how cordless phones work, through radio signals to transmit data from one point A to point B. The sender of the radio signal mixes data into the radio signal in a process called modulation. The receiver can obtain this data by demodulating the received signal.Wireless technology has restrictions as to how you can access the network. You must be within the wireless network range area to be able to connect your computer. Besides that, a wireless network may be protected by a password.There are two different types of wireless networks Wireless Local Area Network (WLAN), and Wireless Personal Area Network (WPAN).Wireless Local Area Network (WLAN)In a wireless local area network, a device called an Access Point (AP) connects computers to the network. The access point has a small antenna attached to it, which allows it to transmit data back and forth over radio signals. With an indoor access point as seen in the picture, the signal can travel up to 300 feet. With an outdoor access point the signal can reach out up to 30 miles to serve places like manufacturing plants, industrial locations, college and high school campuses, airports, golf courses, and many other outdoor venues.Wireless Personal Area Network (WPAN)A WPAN network is a wireless network on a smaller scale than a WLAN network. It also uses radio as a carrier signal, but with a different frequency and wavelength. Bluetooth is the industry standard wireless technology used for WPAN. Bluetooth devices in WPAN operate in a range up to 30 feet away.Compared to WLAN the speed and wireless operation range are both less than WLAN, but in return it doesn't use nearly as much power which makes it ideal for personal devices, such as mobile phones, PDAs, headphones, laptops, speakers, and other devices that operate on batteries.
They got their education by secretly learning it if their master didn't allowed because it was illegal. Sometimes, their masters tought the slave even though it was against the law. By secretly learning it, they could learn it off another slave or steal a book and educate themselves.
they just work they just work,work,work
the work a machine does is the work outputwhat it takes to do the work is the work inputSources;The_work_that_the_simple_machine_does_is_called_the_work
the work a machine does is the work output what it takes to do the work is the work input
Work , Work , Work , Work , Work , Work ! They do what You lazy Americans don't . Mexicans work hard . They do it all !