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C) The change of many jobs In addition to creating and eliminating jobs the computer has caused changes to the working lives of a great many people. The most visible manifestation of this is where the computer has been brought directly into the work routine. A familiar example of this is found at the check-in counters for nearly every airline at nearly every airport. ) and confirmation of the passenger's reservation are displayed on a small screen. The clerk can then relate the information to the passenger (often also assigning a specific seat on the aircraft as well).

If for any reason it is necessary for the passenger to make any change to his itinerary (for example, to change a connecting flight because of the late departure of his first flight) this can often be achieved using the same computer system. Similar systems exist for hotel and package-tour reservations. In all cases the computer terminal becomes an integral part of the operator's work station and the use of it a part of most, if not all, of the tasks performed. For many people the ubiquitous computer printout brings the computer into their daily work.

G. ) so that it can be used as a form it is, of course, even more expensive. In use, moreover, a considerable amount of paper is wasted. Several sheets may have to be used in lining up printing on preprinted stationery (such as invoices or payslips). More seriously, it is impractical to use small quantities of stationery which may be left from previous computer runs. Computer stationery is, therefore, a significant element of the variable costs incurred in running a computer. The Economics of Data Processing 19 (ii) Storage media Another element of variable costs is that of storage media.

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