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Unformatted text preview: medical devices, robots, mechanical parts, etc.
They are also used in the area of Geographical Information System (GIS) for digitizing of
maps available in paper form.
Electronic cards and their associated readers offer another means of direct data entry into
a computer system. Electronic cards are small plastic cards having encoded data
appropriate for the application for which they are used. An electronic-card reader, which
is normally connected to a computer, is used to read the data encoded on an electronic
card and transfer it to the computer for further processing.
Electronic cards are often used by banks and issued to the customers for use in automatic
teller machines (ATMs). An ATM allows a customer to deposit or withdraw cash 24
hours a day without the need to interact with a bank employee. It is an unattended
machine, which may be located at any place (either inside the bank or away from the
bank). It is normally connected to the bank's computer. The electronic card for use in
an ATM has the customer's account number and credit limit (maximum amount that
he/she can withdraw in a day) encoded on t card. An ATM has an electronic-card reader
associated with it. When a customer inserts his/her card into the ATM (actually the
electronic-card reader of the ATM), the reader reads the data encoded on the card and
transmits it to the bank's computer, which activates the customer's account. The customer
can then carry out t desired transaction by following the instructions displayed on the
screen of the ATM and pressing a few keys on the customized keyboard of the ATM.
Electronic cards are also used by many organizations for controlling access of various
types of employees to physically secured areas. In this case, each employee is given an
electronic card with his/her authorization data encoded on it. The authorization data
contains information that specifies which employee is allowed access which areas. All
physically secured areas of the organization have an electronic-card reader installed at
entrance. When an employee wants to enter into a p...
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This document was uploaded on 04/07/2014.
- Spring '14