This document provides information about Introduction to Computers Group 7. It lists the group members and provides brief descriptions of email, how email works, parts of an email address, protocols used for email (SMTP, POP3, IMAP), and what an ATM is along with its basic structure and how ATM transactions work. It also discusses chat/instant messaging explaining how it connects users and how messages are sent and received in real-time. Finally, it touches on video conferencing software Skype, explaining how it allows users to make voice and video calls over the internet using Voice over Internet Protocol (VoIP).

1. Introduction to Computers Group - 7

2. GROUP MEMBERS
Viraj Bhosale – 07
Ganesh Kumar – 15
Ashesh Joshi – 21
Ashish Kandalgaonkar – 23
Laukik Pradhan – 40
Tejashree Sawant – 61
Group - 7

3. What is Email
Email is an electronic message sent
from one device to another. With e-
mail, we can send and receive
messages with attachments, such as
photos and documents. we can also
send music, video clips and software
programs.
Email

4. Username “At” sign Domain Extension
ganesh@yahoo.com
Parts of an E mail address
Email

5. SMTP , POP3 & IMAP
• SMTP : it’s a protocol for sending mail message between servers. Most e-
mail system that send mail over the internet use SMTP to send message
from one server to another
• POP :Post Office Protocol download all mail from the server from the
inbox and stores in computer. Email are removed from the server. Email
are available when internet is not connected.
• IMAP : It’ stands for internet message access protocol. Email stay on the
server and we can make and view mail folder on the server addition to the
inbox. Since email stay on the server we can see all mail from many client
program or device.
Email

6. How does Email works
Email

7. • After composing a message and hitting send, email client whether it's
Outlook Express or Gmail - connects to domain's SMTP server
• email client communicates to the SMTP server, giving it email address, the
recipient's email address
• The SMTP server processes the recipient's email address - especially its
domain. If the domain name is the same as the sender's, the message is
routed directly over to the domain's POP3 or IMAP server - no routing
between servers is needed.
• If the domain is different, though, the SMTP server will have to
communicate with the other domain's server
How does Email works
Email

8. • DNS takes the recipient's email domain name and translates it into an IP
address
• SMTP server has the recipient's IP address, it can connect to its SMTP
server. The message is routed along a series of unrelated SMTP servers until
it arrives at its destination
• The recipient's SMTP server scans the incoming message. If it recognizes
the domain and the user name, it forwards the message along to the
domain's POP3 or IMAP server.
How does Email works…
Email

9. What is ATM?
An automated teller machine (ATM) is a
computerized telecommunications device
that provides the customers of a financial
institution / bank with access to financial
transactions in a public space without the
need for a human clerk or bank teller
round the clock (24 hrs a day)
ATM

10. Reg Varney using the first
ATM in 1967
ATM

11. Structure of ATM
1. Card reader
2. Keypad
3. Speaker
4. Display screen
5. Receipt printer
6. Cash dispenser
ATM

12. Back end process of an ATM
• An ATM machine is a data terminal equipment(DTE) which converts user
information into signals or reconverts received signals.
• These signals are processed via a standard telephone line using a toll free number
or via Ethernet connection using the internet service(advanced option)
• PIN number of the customer and the Terminal Id number(TID) connects the ATM
network via which carried to the host processor or card holders bank
• What is an ATM network? If you take your ATM card out of your wallet now, you
will see network logos (also known as bugs) on the back:
• On receipt of the request, host banks application will send the desired results
asked by the user after validation of the request
• The bank application will also call the API url used as an SMS gateway
• http://sms.XXXX.in:8080/smart/SmartSendSMS.jsp?
usr=abc&pass=xyz&msisdn=91XXXXXXXXXX&sid=SMS&msg=test message&mt=0
ATM

13. Request to ATM machine (data terminal equipment)
Request processed to ISP via Ethernet
Information carried to ATM network(TID and PIN)
Host Bank’s application/server
Information again carried to the ATM network
Users ATM
How ATM transaction work
ATM

14. How ATM transaction work
ATM

15. Chat
“ Real-time communication between two or
more users via computer or mobile. Once a
chat has been initiated, either user can
enter text by typing on the keyboard and the
entered text will appear on the other
user's monitor. Most networks and online
services offer a chat feature.”
CHAT

16. • Computers & mobiles make it hard to be a hermit.
• There are thousands of users engaged in friendly chats over
the Internet.
• There are six types of IM clients, including single-protocol,
multi-protocol, web-based, enterprise, mobile app and
portable IMs. Regardless of which type you choose, they all
connect the same way.
CHAT

17. • For a member of the IM network, the server will send your
buddy list data
• The data sent to your computer is sent in multiple units
called packets, smaller bits of information which leave the
network server are received by your IM client. The data is
then collected, organized and presented as live and offline
friends on your contacts list.
• From this point, the collection and distribution of information
between your computer and the network's server is
continuous, open and instantaneous, making the lightning-
quick speed and convenience of instant messaging possible.
CHAT

18. • Sending an instant message seems like a breeze
• Double-clicking a contact's screen name tells the client
software to produce an IM window, addressed to that
particular user
• Behind the screen, the client rapidly breaks up your message
into packets, which are delivered directly to the recipient on
their computer or device. As you chat with your contact, the
window appears identically to both parties, and messages
appear within a split second of being sent.
CHAT

19. • Once you are offline the server will stop incoming data
packets from being transmitted to your computer or device.
The network also updates your availability to offline on the
buddy lists of friends, family and colleagues
• Incoming messages which were not received are stored
as offline messages on most IM clients, and will be received
when you sign back into the service
CHAT

20. SKYPE

21. What is video conferencing ?
• Interactive telecommunication technology
• conference between two or more participants at different
sites by transmitting audio and video data
• tools : video camera , microphone , speakers on device
SKYPE

22. Skype
• Software application that allows users to make voice and video calls over
the internet
• Special features :
1. Conference calls with multiple people
2. Send files instantly
3. Connect to your land line
4. Get your calls forwarded when you're offline
5. Send text from Skype
6. Incoming calls from anyone
SKYPE

23. How does Skype works ?
• The technique for making a phone call using the Internet is
referred to as Voice over Internet Protocol (VoIP), because it
uses TCP/IP for delivering voice information
• The call uses TCP/IP to travel over the local network, then
through the Internet, and then finally goes to the normal
phone network closest to the call location
SKYPE

24. How VoIP (Voice over
Internet Protocol) Works
• The VoIP phone converts the voice signal to digital data and
compresses it .
• The compresses digitized voice signal is broken into IP packets.
• The packets are sent out across the internet the same as any other
IP packets , using the internet TCP/IP Protocol
• The voice packets are sent to an IP voice gateway nearest to the
phone call's destination. The IP voice gateway takes the voice
packets converts them back into original form and sends them to
the Public switched telephone network (PSTN)
• The call goes through PSTN , the call is sent to
the IP gateway , which compresses it breaks
into packets sends it over to the internet
to the caller
SKYPE

25. Online Education
• Learning in a way that uses information
& communications technologies, then it
is online education.
• Intention is to support a broad range of
electronic media to make vocational
learning more flexible for the client.
ONLINE EDUCATION

26. Types of Online- Education
• Learning Management- MOODLE
(Modular object oriented dynamic
learning environment)
• Browser based training- Browse and get
trained.
• Distance learning- Open University
ONLINE EDUCATION

27. How Online Education
works
ONLINE EDUCATION

28. Benefits of Online Education
• Market Driven
• Policy Driven
• Academically Driven
Challenges to Online Education
• Human Challenges
• Technology Based Challenges
• Skill Based challenges
ONLINE EDUCATION

29. An online submission refers to a manuscript submitted
by electronic means: that is, via e-mail or a web form on
the Internet.
Especially in the context of computers and the Internet,
the term "manuscript" may even refer to documents
(text or otherwise) typed out or prepared on
typewriters and computers and can be extended to
digital photographs and videos, and online surveys too.
Online Submission
(Online Forms)
ONLINE SUBMISSION

30. Online Form Admission for Colleges
ONLINE SUBMISSION

31. ONLINE SUBMISSION

33. How Does HTML form works?
ONLINE SUBMISSION

34. ONLINE SUBMISSION

35. Payment Gateway
PAYMENT GATEWAY

36. Definition
• The service that automates the payment transaction between the
shopper and merchant. It is usually a third-party service that is
actually a system of computer processes that process, verify, and
accept or decline online transactions on behalf of the merchant
through secure Internet connections.
• The payment gateway is the infrastructure that allows a merchant to
accept credit card and other forms of electronic payment. When
referring to payment gateways used for Internet transactions, it may
also be called an IP payment gateway.
• A payment gateway facilitates the transfer of information between a
payment portal (such as a website, mobile phone or interactive voice
response service) and the Front End Processor or acquiring bank
PAYMENT GATEWAY

37. How Payment Gateway Works
Functions of Payment Gateway.
• Authorizing- Verifying the Buyer’s Credit/debit card details.
• Clearing- Transferring the transaction to merchant’s bank.
• Reporting- Recording all transaction.
PAYMENT GATEWAY

38. Steps Involved in Payment
Gateway Transaction
• Step1:- When clicks on the “Buy” button. A message is sent to the website
regarding the consumer’s desire to buy and make payment.
• Step 2:- Once message is received by web store server, adds its digital
certificate. Message is now called a “Digital Order” and also includes the
consumer’s IP address and transaction amount. Digital Order is now sent to the
Payment Gateway
• Step 3:-Based on the Digital Certificate, the Payment Gateway authenticates
the web store.
• Step 4:- The Payment Gateway offers various payment options on a screen to
the buyer.
PAYMENT GATEWAY

39. • Step 5:- Buyer chooses the desired payment option, which is transmitted via
the secure link to the Payment Gateway.
• Step 6 - The Payment Gateway sends the payment details to the acquiring bank
• Step 7 - The acquiring bank sends the information to the buyer’s issuing bank.
• Step 8 - Based on the credit limit and the payment instrument’s validity, the
issuing bank either accepts or rejects the transaction. The
confirmation/rejection message is transmitted to the Payment Gateway
through the acquiring bank.
• Step 9 - The Payment Gateway then transmits digital receipts to the shopping
site as well as the buyer.
• Step 10- The web store can ship the goods/services to
the buyer.
PAYMENT GATEWAY

40. Benefits of Payment Gateway
• 24X7X365 Convenience.
• Real time Authorization of Credit/debit cards.
• Multiple payment Option.
• Flexible, powerful real-time reports generation
• Multi currency settlement.
• Facility for customer refund.
• Stringent security measures to gain customer & merchant trust.
 Transecute Pvt Ltd.
 Payment-Gateway-India.com
 EBS.
 PaySeal(ICICI)
 CitiBank
 HDFC
Payment Gateway in India
PAYMENT GATEWAY

41. THANKYOU
Introduction to Computers Group - 7