AUTOMATED TELLER MACHINE (ATM):-
You're short
on cash, so you walk over to the automated teller machine (ATM), insert your
card into the card reader, respond to the prompts on the screen, and within a
minute you walk away with your money and a receipt. These machines can now be
found at most supermarkets, convenience stores and travel centers all over the
country from coast to coast. But have you ever wondered about the process that
makes your bank funds available to you at any of the thousands of ATMs?
ATMs have
become a quick, convenient way to access money in your accounts.
Why ATM?
International standard-based technology (for interoperability)
Low network latency (for voice, video, and real-time applications)
Low variance of delay (for voice and video transmission)
Guaranteed quality of service
High capacity switching (multi-giga bits per second)
Bandwidth flexibility (dynamically assigned to users)
Scalability (capacity may be increased on demand)
Medium not shared for ATM LAN (no degradation in performance as traffic load or
number of users increases)
Supports a wide range of user access speeds
Appropriate (seamless integration) for LANs, MANs, and WANs
Supports audio, video,
imagery, and data traffic (for integrated services)
PARTS OF THE MACHINE:-
You're probably one of the
millions who has used an ATM. An ATM has following devices:
1. CARD READER - The card reader captures the account information stored on the magnetic stripe on the back of an ATM/debit or credit card. The host processor uses this information to route the transaction to the cardholder's bank.
2. KEYPAD -
The key pad lets the cardholder tell the bank what kind of transaction is
required (cash withdrawal, balance inquiry, etc.) and for what amount. Also,
the bank requires the cardholder's personal identification number (PIN) for
verification. Federal law requires that the PIN block be sent to the host
processor in encrypted form.
3. SPEAKER - The speaker
provides the cardholder with tactile feedback when a key is pressed.
4. DISPLAY SCREEN - The display
screen prompts the cardholder through each step of the transaction process.Leased-line machines commonly use a monochrome or color CRT (cathode ray tube)
display.Dial-up machines commonly use a monochrome or color LCD.
5.RECEIPT PRINTER -The
receipt printer provides the cardholder with a paper receipt of the
transaction.
6.CASH
DISPENSER -The heart of an ATM is the safe and cash-dispensing mechanism.The
entire bottom portion of most small ATMs is a safe that contains the cash.The cash-dispensing mechanism
has an electric eye that counts each bill as it exits the dispenser.The bill
count and all of the information pertaining to a particular transaction is
recorded in a journal.The journal information is printed out
periodically and a hard copy is
maintained by the machine owner for two years. Whenever a cardholder has a dispute
about a transaction,he or she can ask for a journal printout showing the
transaction, and then contact the host processor.If no one is available to
provide the journal printout, the cardholder needs to notify the bank or
institution that issued the card and fill out a form that will be faxed to the
host processor. It is the host processor's responsibility to resolve the
dispute.
Besides the electric eye that
counts each bill,the cash-dispensing mechanism also has a sensor that
evaluates the thickness of each bill. If two bills are stuck together, then
instead of being dispensed to the cardholder they are diverted to a reject bin.
The same thing happens with a bill that is excessively worn or torn, or is
folded.
The number
of reject bills is also recorded so that the machine owner can be aware of the
quality of bills that are being loaded into the machine. A high reject rate
would indicate a problem with the bills or with the dispenser mechanism.
NEXT COMING:::WORKINGOF ATM
