Computer is an electronic device for storing and processing data
internet- is the global system of interconnected computer networks that use
the internet protocol suite (TCIP/IP) to link billions of devices worldwide.
World Wide Web- Invented by Tim-Berners Lee
Web pages- is a hypertext document connected to the World Wide
Web. I
Web 1.0 – refers to the first stage in the World Wide Web, which was
entirely made up of the Web pages connected by hyperlinks.
Web 2.0 – is the evolution of Web 1.0 by adding dynamic pages. The user
is able to see a website differently than others.
. Web 3.0– this platform is all about semantic web. Aims to have machines
(or servers) understand the user‟s preferences to be able to deliver web
content.
Static Web Page- is known as a flat page or stationary age in the sense that
the page is „‟as is‟‟ and cannot be manipulated by the user.
Dynamic Web Pages- web 2.0 is the evolution of web 1.0 by adding dynamic
web pages.
Folksonomy- allows user to categorize and classify information using
freely chosen keywords e.g. tagging by FB, Twitter, use tags that start with
the sign #, referred to as hash tag.
Rich User Experience – content is dynamic and is responsive to user‟s
input.
User Participation- The owner of the website is not the only one who is
able to put content.
Long Tail- services that are offered on demand rather than on a one-time
purchase.
Software asaservices- users will be subscribe to a software only when
needed rather than purchasing them e.g. Google docs used to create and
edit word processing and spread sheet
Mass Participation- diverse information sharing through universal web
access. Web 2.0‟s content is based on people from various cultures.
Web3.0 Semantic Web
The aim of Web 3.0 is to have machines (or servers) understand the
users‟ preferences to be able to deliver web content specifically targeting the
user.
Problems of Web 3.0
Compatibility
Security
Vastness
Vagueness
Logic
Trends in ICT
Convergence- is the synergy of technological advancements to work on a similar goal or task.
Social Media- is a website, application, or online channel that enables web users web users to create , co-create, discuss modify, and exchange user generated content.
Six types of Social Media:
Social Networks
Bookmarking Sites
Social News
Media Sharing
Microblogging
Blogsand Forums
These are sites that allows you to connect with other
people with the same interests or background. -Social Networks
Sites that allow you to store and manage links to
various website and resources. - Bookmarking Sites
Sites that allow users to post their own news items or links
to other news sources. -Social News
sites that allow you to upload and share media content
like images, music and video. -Media Sharing
focus on short updates from the user. Those that
subscribedto the user will be able to receive these updates. -Microblogging
Blogs and Forums - allow user to post their content. Other users are able
to comment on the said topic
Mobile Technologies - The popularity of smartphones and tablets has
taken a major rise over the years.
COMMON MOBILE OEPRATING SYSTEMS:
iOS -use in apple devices
Android-an open source OS developedbyGoogle.
Blackberry OS - use in blackberrydevices
Windows phone OS - A closedsource and proprietary operating system developedbyMicrosoft.
Symbian - the originalsmartphoneOS. Used by Nokia devices
WebOS- originally used in smartphone; now in smart TVs.
Windows Mobile - developedbyMicrosoft for smartphones and pocket PCs
Assistive Media - is a non- profit service designed to help people who
have visual and reading impairments.
Cloud computing- distributed computing on internet or delivery of
computing service over the internet.e.g. Yahoo!, Gmail, Hotmail.
CLOUD COMPUTING COMPONENTS
Client computers
Distributed Servers
Datacenters
. Client computers – clients are the device that the end users interact
with cloud.
Distributed Servers – Often servers are in geographically different
places, but server acts as if they are working next to each other.
Datacenters – It is collection of servers where application is placed
and is accessed via Internet.
Types of Clouds
Public Cloud
Private Cloud
Community Cloud
Hybrid Cloud
Public Cloud- allows systems and services to be easily accessible to
the general public.
Private Cloud- allows systems and services to be accessible within an
organization.
Community Cloud- allows systems and services to be accessible by
group of organizations.
Hybrid Cloud- is a mixture of public and private cloud.