DATA COMMUNICATIONS
Data communication is a part of the
telecommunications specifically with respect to the transmission or transfer of
data and information between computer computer and other devices in a digital
form that is sent through the data communications media . Data means the
information presented by the digital cues . Data communication is vital baguan
of an information society , because these systems provide the infrastructure
that allows computers to communicate with each other .
Benefits Data Communications
1. Data sharing
With this facility, each computer
can use the data to another computer so that will save time and facilitate the
job, especially if the distance between computers apart.
2. sharing program
Certain applications can be run
on other computers in the network. Usually the files stored in server principal
application of the network to then be installed via jaringancomputer. This
makes the installation a piece of software in the network more easily. It also
makes the process of upgrading and maintenance of applications across the
network will be felt easily.
3. Device Sharing
Users can divide dikomputernya
devices in the network. For example, devices such as printers, CD-ROM, and hard
disk. When paired in a computer network can menshare devices on their computer
that allows other computer users to access these devices are dikomputer as
their own. With this, the use of a device will be more efficient for example, a
single printer can be used by many computer users are connected to the network.
4. The relationship between the different devices that
allows the user to communicate
with a variety of media, such as email and video conferencing. This allows for
text, voice, images and video can be transmitted along a computer network as
data. The communication can be done in networked local or internet
5. Paperless
The existence of savings due to the reduced use of paper in
communicating.
There are so many benefits of data communications. Improved quality of life
increasingly requires people to perform various activities required to optimize
its resources. Information and Communication Technology development is so fast
that it does not directly require people to use it in all its activities. Some
application of data communication, among others in the company, business,
banking, education, and health.
Some communication Application Data :
1. Application of Data Communication in Companies
The
application of data communication is widely used by usahawan.Kebutuhan time and
cost efficiency led to any businesses feel the need to apply information
technology in the work environment. Communication technology application causes
a change in work habits. For example the application of Enterprice Resource
Planning (ERP). ERP is a software application that includes the company's
management system.
2. Implementation of Data Communication In Business World
Communication used
in the business world to trade electronically or known as E-Commerce.
E-Commerce is a trade using the internet communication network.
3. Application of Data Communication in Banking
In
the banking world Communication is the application of banking transactions via
the Internet, known as Internet Banking. Some transactions can be done via
Internet Banking, among others, transfer money, check balances, transfer funds,
pay bills and account information.
4. Application of Data Communication in Education
Learning
technologies had been developed seirng the times. In the implementation of
learning daily paper Information and Communication Technology is often
encountered combination of audio technology / data, video / data, audio /
video, and internet. The Internet is a cheap communication tool which allows
the interaction between two or more people. Capabilities and characteristics of
the internet allows the process of distance learning (E-Learning) is becoming
more effective and efficient in order to obtain better results.
5. Implementation of Data Communication in Health
System-based
smart card (smart card) medical interpreter can be used to determine the
history of illness of patients who come to the hospital because the card of the
medical interpreter can determine the patient's medical history. The use of
robots to assist in the surgery and the use of three-dimensional computer
imaging results to show the location of the tumor in the patient's body.
6. Application
of Data Communication Against social life
The
process of using information and communication technology is the basis for
emerging and known as the Information Society. Informatics community involved
more than just the adoption of information and communication technology in it,
but participated in the application of information and communication
technologies for the benefit of local communities. Informatics society
confronts not only the technology, but also a social idea, known as social
capital. Informatics community has also introduced a new dimension to the
concept of division of community based cultural capital and social class
stratified society.
As
an academic, community resources and informatics take participants from a
series of backgrounds, including Computer Science, Management, Information and
Library Science, Planning, Sociology, Education, Social Policy and Research
Rural, Regional and Development.
As a practice, community
informatics is of interest to those concerned with the Community Development
and Local Economic Development in Developing Countries as well as forward and
has a close relationship with those who work in areas such as Community
Development, Community Economic Development, Health Informatics Community Based
Adult Education and Advanced.
Informatics
community is part of the fabric of society in the emerging world and has a role
in some fundamental level in a thriving community. Informatics society can be
described as the use of information and communication technology for the
practice of community, which is defined by the Glen (1993) as a public service
delivery, and community action. In particular, public practice is increasingly
considered fundamental to social problems because people in a place facing the
modern trading world less been the subject of state / nation.
Communication
has played a key role in developing and maintaining community kesehjateraan
geographically throughout history. Information Society is a recent phenomenon
in the modern network society, can be tracked by the proponent of public communication
late 1980 until early 1990.
From the beginning, the main goal
is to use the technology community infrastructure, applications, and
information and communication services to empower and preserve the local
community social capital (networks, organizations, groups, activities, and
values that
underlie public life).
7. Implementation of Data Communication Against Schools
Learning
We
must know that in order to utilize ICT in learning is not as easy as
dibayangkan.Perlu several requirements that must be met in order to realize the
use of ICT in learning, including:
-Adanya Internet access
technology for teachers and students, both in the classroom, school, and
teacher education institutions,
-Adanya Quality materials for teachers and students,
-Teacher Need to be productive on the development of ICT.
USE GENERAL DATA COMMUNICATIONS
General usage data communications classified in several
fields, namely:
a. Field of Data Collection (Data Collection)
Data were collected from several places (Remote station), is
stored in memory and on time ,certain period of time the data will be processed.
Example: Application system inventory, payroll, etc.
b. FAQ field (Inquiry and Respone)
Users can access directly to the
program or file. The data is sent to the computer system is immediately
processed and the results can be given immediately. Users can access directly
to the file / program. The data is sent to the computer system can be directly
processed and the results can be immediately given. When users conduct a
dialogue with computer then this kind of system is called interactive.
Example: aplikaasi banking.
c. Field Storage and Retrieval
Data previously stored in the computer can be retrieved at any
time by the parties concerned.
Example: Messege Application Switching and Electronic Mail,
such as the delivery of letters, documents or memos electronically.
d. Time Sharing
Several users can work on the program together.
Example: Application usage of computer systems together for the
development of software (software), engineering calculations, word processing
(word processing), CAD (Computer Aid Design), etc.
Time sharing system is a
technique using the online system by several users alternately according to the
time it takes users. CPU processing time due to the development of faster,
while the tool Input / Output can not keep pace with the speed of the CPU, the
speed of the CPU can be used efficiently by serving some of the tools I / O
interchangeably
Pictures: Time Sharing
One use of time-sharing system
can be seen in the use of a terminal at a bank teller. When a customer comes to
the bank to save money or take money, then the savings book is placed on the
terminal. And by the operator at the terminal is recorded via the keyboard (the
keyboard), then the data is sent directly to the computer center, process,
calculate the amount of money as you see fit, and print it on the savings book
to transactions that had just done.
e. Field Remote Job Entry
Remote terminal sends job programs
or data (text) to be saved to a central computer where the data is processed.
Example: Applications that use the computer system equipment
ancillary equipment contained in a distant place.
The data collected will be sent
in advance and simultaneously transmitted to a central computer for processing.
Because the data is collected (batch) first in one period, then the way is
called a processing system with batch processing system. Results of general
data processing in computer centers and can not be directly once produced,
because the central computer must simultaneously process a large enough data
set. In the picture can be seen form the system works.
Picture: Remote Job Entry System Work
f. Field of Real Time Data Processing and Process Control
The desired process results in accordance with the interests
of the process (realtime).
Example: Application settings
industrial equipment, process control systems, telecommunication systems and
others.
A realtime system makes it
possible to transmit data to a central computer, are processed at the computer
center immediately upon the data received and later transmit the results back
to the sender of the data processing on the spot. American Airlines is a
company that was first pioneered this system. With this system realtime,
passenger airplane from an airport or a particular agent can book tickets for a
particular flight and get a result less than 15 seconds, just to find out if
there are seats on the plane or not.
g. Field of Data Exchange Between Computers
The exchange of data in the form
of programs, files, etc. The exchange of data in the form of programs, etc.
files between computer systems. At this data applications exchanged numerous and
shorter once the desired time.
