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13 a Match the following inventions of the modern technology (1-7) to
their definitions (A-G).
1 mobile phone
2 cellular phone
3 digital camera
4
information
technology
5 digital signature
6 laptop computer
7 smart card
A It is a device that uses a charge-coupled device (CCD)
to take pictures which are stored as digital data rather than
on film.
B Collective term for the various technologies involved in
processing and transmitting information which include
computing, telecommunications, and microelectronics.
C In computing, method of using encryption to certify the
source and integrity of a particular electronic document.
D Wireless phone that operates over radio frequencies
and links calls to the public telephone system via a base
station.
E A microcomputer, small enough to be used on the
operator's lap, which consists of a single unit, incorporating
a keyboard, floppy disk and hard disk drives, and a screen.
F Plastic card with an embedded microprocessor and
memory, which can store personal data, identification, and
bank-account details, to enable it to be used as a credit or
debit card.
G Cordless telephone linked to a digital cellular radio
network.
b Fill in the sentences with the words and expressions mentioned in the
activity above.
1 _____ can connect to the Internet via a data card, which converts computer
data into a form that can be passed over the network and vice versa.
2 Unlike phones connected up by telephone lines, _____ allow mobility, as calls
can be made while moving from one radio cell to another.
3 The output from _____ can be downloaded onto a computer for retouching or
storage, and can be readily distributed as computer files.
4 _____ has given decision makers the opportunity to consider far more data
when making decisions.
5 One type of _____ commonly seen on the Net is generated by the program
Pretty Good Privacy (PGP).
6 In the 1980s there were several types of ____, but in the 1990s designs
converged on systems known as notebook computers.
7 The ____ was invented by French journalist Juan Moreno in 1974.
14 Put the verbs in brackets in the correct form in this description of
GPS.
GPS helps drivers 1) ______ (find) the quickest route and prevents walkers
2) ____ (get) lost. It allows mapmakers 3) ____ (locate) a feature exactly. GPS is
made up of satellites 4) ____ (orbit) the earth combined with mapping software 5)
_____ (build) into receivers. The receivers pock up signals from at least three
satellites and use this information 6) ____ (calculate) their exact position. To
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