IT REVIEWER                               make it useful, it is detailed
information.
ICT – Information and Communication
Technology                                EVOLUTION OF TECHNOLOGY
Technology that supports activities       TOOLS – Instrument or devices used to
involving   information  such    as       perform    specific  tasks,   usually
gathering, processing, storing and        requiring manual control. Tools are
presenting data.                          generally simpler and are often
                                          handheld.
Increasingly, these activities involve
collaboration and communication           MACHINES - Devices that consist of
                                          multiple   components      design to
IT – Pertains to the industry that
                                          perform tasks automatically or semi-
involves      computers,     software,
                                          automatically, often converting one
networking and other IT infrastructure
                                          form of energy into another.
that help relay or manage information
deemed important in modern day            COMPUTER – Is an electronic device,
living.                                   operating under the control of
                                          instruction stored in its own memory
TECHNOLOGY – can be broadly defined
                                          that can accept data, manipulate the
as the collection of tools, knowledge,
                                          data according to specified rules.
and processes used to create goods
and services that improve human life.     AUTOMATION – defined as the
                                          technique of making apparatus, a
It   encompasses       both    physical
                                          process, or a system to operative
hardware (such as devices, machinery,
                                          operate automatically
and tools) and the knowledge
(software,     methodologies,      and    EVOLUTION          OF            COMPUTER
practices) required to produce and use    GENERATIONS
them.
                                             -   VACUUM TUBES
COMMUNICATION – process in which             -   TRANSISTOR
information is exchanged between             -   INTEGRATED CIRCUIT
individuals through verbal and non-          -   MICROPROSSESOR
verbal means                                 -   AI AND QUATUM
KNOWLEDGE – Processed information         WHAT MAKES COMPUTERS WORK
                                          HARDWARE-        pertains    to     the
                                          computer’s physical devices. It consist
DIFFERENCE BETWEEN DATA AND
                                          of interrelated electronic devices that
INFORMATION
                                          are used to manipulate the computers
DATA – Data is raw, unorganized facts     operation
that need to be processed.
                                          INPUT DEVICES - Used to enter data or
INFORMATION – When data is                commands into a computer system
processed, organized, structured or
presented in a given context so as to
OUTPUT DEVICES - Devices used to         COMMUNICATION – computers enable
display or present data processed by     efficient   communication      through
the computer                             networks, including the internet.
System unit is the main component of     CLASSIFICATION OF COMPITRUS
a computer that houses the critical
                                            1.   Personal computer
hardware responsible for processing
                                            2.   Workstation
and storing data.
                                            3.   Minicomputer
                                            4.   Mainframe
                                            5.   Supercomputer
                                         HOW COMPUTERS INTERPRET DATA
TYPES OF SOFTWARE
                                         Key press
System software
                                         Conversion to binary code
1. Operating system,
                                         Processing by the CPU
2. Device drivers
                                         Storage in memory
Application software
                                         Data processing
1.Web processors
                                         Conversion to display format
2. Web browser
                                         Output on monitor
3. Media playlist
Utility software
                                         HOW    COMPUTERS        COMMUNICATE
1. Antivirus Program
                                         WITH EACH OTHER
2. Disk cleanup tools
                                         Address bus
3. Backup software
                                         Data bus
WHY COMPUTERS ARE POWERFULL
                                         Control bus
SPEED-    Computers     can   process
millions of calculations and execute
task within fractions of a second,       HOW   COMPUTERS         CONNECT     TO
making them incredibly fast compared     OTHER COMPUTERS?
to human capabilities
                                         NETWORK – Broad resource sharing
RELIABILITY AND CONSISTENCY –
                                         COMPUTER NETWORK
computers operate with a high level of
reliability and consistency. They can    NETWORK DEVICES
perform repetitive tasks continuously
without fatigue, ensuring consistent     ROUTER – Connects multiple networks
output with little variation             ACCESS POINT
ACCURACY – Computers perform             Wifi connectivity range extension
calculations and data processing with
a high level of precision.
SWITCH     –         Local    network    browser uses HTTP to communicate
communication                            with the server and load the webpage
MODERN – Internet connectivity and       URLs – Example:
signal conversion
                                         https.//www.example.com/about is a
BL UETOOTH AND WIFI                      URL that points to the “about” page on
                                         a website
BLUETOOTH – connecting peripherals,
short-range communication                HTML – Example: <h>Welcome to My
                                         Website</h1> creates a main heading
WIFI – connecting to internet, longer-
                                         on a webpage
distance networking
                                         WEB SERVER – Example: when you
HOW   COMPUTERS         CONNECT    TO
                                         type a URL into your browser, the
OTHER COMPUTERS?
                                         browser sends a request to the
NETWORKS                                 appropriate web server, which then
                                         returns the webpage content
Internet, intranet
                                         WEB BROWSER – Examples: Google
Global  communication,        Internal   Chrome, Mozilla Firefox, Safari, and
communications                           Microsoft Edge are popular web
INTERNET     –  global  network   of     browsers.
interconnected     computers    that     EVOLUTION OF THE WEB
communicate      using  standardized
protocols, allowing users to share       Web 1.0
information and access.
                                         Web 2.0
                                         Web 3.0
WORLD WIDE WEB
                                         Web 4.0
- Information system on the internet
                                         OVERVIEW OF WEBSITE TYPES
that allows users to access documents
and other resources through web          Business website
browsers, using hyperlinks to navigate
                                         Portfolio website
between them.
                                         Educational website
- The web is based on protocols like
HTTP and uses URLs to identify and       social media website
locate resources
                                         news website
HYPERLINK – Example: links on
websites that take you to another        blog
page, such as a product page from a      E-consumer website
home page.
                                         Personal website
HTTP – Example: when you enter a
website                    address       WORLD WIDE WEB AND INTERNET
(e.g.,http://example.com),    your
                                         Internet
                                              computers to perform tasks typically
                                              requiring human intelligence. These tasks
Hardware, Protocols, World Wide Web           include:
Web pages, Websites, Browser, Servers            1.   Learning
                                                 2.   Reasoning
SOCIAL  NETWORKS          AND      ONLINE
                                                 3.   Problem solving
COMMUNITIES
                                                 4.   Perception
SOCIAL NETWROKS:                                 5.   NLP
                                                 6.   Robotics
Example: Facebook, Instagram, Twitter            7.   Expert system
ONLINE COMMUNITIES:                           IMPACTS OF AI
Example: Reddit      forums,    specialized      1.   FINANCE
groups on discord                                2.   CYBERSECURISTY
                                                 3.   Healthcare
                                                 4.   Autonomous Vehicles
TRADITIONAL COMMUNITIES:                         5.   Agriculture
Example: neighborhoods, clubs, religious      CYBORG
congregations
                                              Is being that combines both biological and
VISUAL ENVIRONMENT AND AUGMENTED              artificial   (mechanical   or   electronic)
REALITY                                       components. Cyborg use technology to
                                              enhance or restore physical or cognitive
VISUAL ENVIRONMENT (VE) – a computer-         abilities, integrating human and machine
generated, three- dimensional space           elements
where users can interact with simulated
elements. It creates an immersive             EXAMPLE:
experience through technologies like
headsets, screens, and sensors.                  1. Cochlear implants
                                                 2. Prosthetic   limbs      with   neutral
AUGMENTED REALITY (AR) – overlays                   control
digital information, such as images,             3. Neil Harbison
sounds, or text, on the top of the real          4. Pacemakers.
world. It blends virtual elements with
user’s physical environment, enhancing        EVOLUTION OF MEDIA
real-world experiences.                       MEDIA – refers to the various channels or
ARTIFICIAL INTELLIGENCE – science of          tools used to store and deliver information
making computers or machines in general       or data. It encompasses all forms of
to do things that require intelligence when   communication
done by humans. (Living in the IT ERA by      MESSAGE - the content or information that
Tayuan)                                       is being communicated. It includes the
A machine’s ability to perform the            ideas, thought, emotions, or information
cognitive functions we usually associate      that the sender intends to convey to the
with human minds. (McKinsey & Company,        receiver
April 2023 article)                           MEDIUM - the specific channel or format
Refers to the simulation of human             through which the message is delivered. It
intelligence in machines or computer          serves as the vehicle for transmitting the
systems. It involves the development of       message from the sender to the receiver.
algorithms and software that enable
MESSENGER – the person or entity that            b.   Complete
delivers the message. The messenger can          c.   Economical
also be a technology or platform used to         d.   Reliable
transmit the message, influencing how it         e.   Flexible
is received and interpreted.                     f.   Relevant
                                                 g.   Simple
EVOLUTION OF MEDIA                               h.   Timely
Industrial age                                   i.   Verifiable
                                                 j.   Accessible
Information age                                  k.   Secure
Computer age                                   INFORMATION AS A RESOURCE
Digital age                                      a.   Zero-cost margin
                                                 b.   Non-rivalrous
Digital information age
                                                 c.   Non-exclusive
   1. How information is presented?              d.   No transparency
   2. How the connection is established?
The impacts of the evolution of media
from old media to new media on our
consumption of information:
   a.   Interactivity
   b.   User-generated content
   c.   Real-time updates
   d.   Personalization
INTRODUCTION TO RESOURCES
PHYSICAL RESOURCES- are tangible assets
that can be physically touched, measured,
and used for various purposes. They
include    materials,   equipment,   and
facilities
CONCEPTUAL RESOURCES – intangible
assets that involve ideas, knowledge, and
intellectual property. They are not physical
in nature but provide value through
information, skills, or creativity.
INFORMATION
   a.   Expandable
   b.   Compressible                             -
   c.   Transportable
   d.   Diffusive
   e.   Shareable
VALUABLE INFORMATION
   a. Accurate