Components
Description
Location
walls
Appear 1 .............
outer surface of rusticle
consorms
.
bacterial
2 .............
Mainly near water channels
.
work together
.
each does a different
3 .............
water channels
throuqhout the rusticle
Funqal qrowths
at junction of water channels and
4 .................. of rusticle
5 .............
ribbons
Throuqhout the rusticle
IEI. TS Reading (Activitt 24)
Table completion
.,... The advantages for a workplace who adopt the new technologies are considerable, not least the impact on productivity
Mobile devices will probably never entirely replace the wired systems that define our workplaces, but
they will offer a range of new working possibilities, allowing people the freedom to work in ways better
suited to their needs.
In situations where secure short-range connections between devices such as personal computers and
mobile phones are required, Bluetooth technology provides an ideal cost- effective service. Bluetooth,
which typically has a range of about ten metres, works well in small office space and provides flexibility
for businesses where mobile employees come into an office to download information from their laptop
computers or to access databases. The main disadvantage of Bluetooth is that data transfer is relatively
slow at 1 MB per second. If speed of data transfer is important, then WiFi, short for Wireless Fidelity, is
vastly Superior to Bluetooth. Although it works over a relatively short range, it can transmit data at up to
54 MB per second. It is most useful for individuals who need to work remotely, for instance while
travelling. To do this, users have to locate a 'hotspot' near to where they happen to be, for example in a
cafe or a public library. Hotspots operate over a range of 100 metres and allow access by 256 users at
any one time.
GPRS, General Packet Radio Service, is a technology related to mobile phones which allows
transmission of emails and small amounts of data as well as high-speed access to the Internet. It is ideal
for reliable communication as well as internet browsing, but is not suitable for full mobile working in the
way that WiFi is, because of the restricted amounts of data that can be transmitted at any one time. Two
other important aspects of the new technologies which need to be considered are security and cost.
Currently, because it works within a limited environment, Bluetooth is more secure than WiFi or GPRS,
but in terms of cost, s GPRS is relatively cheap with mobile phone networks offering a range of value-for
money packages. Bluetooth technology is built into the latest versions of mobile phones and other
devices, but an adapter which adds Bluetooth capability to a device costs only about £50. To set up a
WiFi hotspot can cost from £120 to £500, but an individual network card allowing users access at existing
hotspots costs between £40 and £60.
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