What is IT? Lesson

Fundamentals of Computing: From Mainframes to IoT

Introduction to Information
Technology

●IT systems process, store, and transfer
information

●Involves many types of devices:

●• Computers

●• Servers

●• Mobile devices

●• Internet of Things (IoT) devices

●IT professionals manage anything with a
computer chip

●Why is IT important in today's world?

Hardware vs Software

●Hardware: Physical components you can
touch

●• Keyboards, mice, hard drives, memory,
CPUs

●Software: Programs and data you interact
with

●• Operating systems, applications like
Word, Excel, Chrome

●How do hardware and software work
together to make a computer function?

Basic Computer Processing

●Input: User types or clicks

●Processing: CPU handles instructions

●Output: Results displayed on screen

●Storage: Saving data for later use

●Can you think of examples for each step in this process?

Evolution of Computers: Mainframes

●Huge computers filling entire rooms

●Used vacuum tubes

●Performed simple tasks like census tabulation

●Used punch cards for input

●How do you think using these computers differed from using
modern devices?

Personal Computers
(PCs)

●Emerged in the 1980s

●Brought computing to homes and offices

●Allowed for word processing, early internet
use

●Key players: IBM, Apple, Microsoft

●How did PCs change the way people
worked and lived?

The Internet
Revolution

●1990s: Widespread internet adoption

●Rise of websites and online services

●Email became common

●Early smartphones appeared

●What was life like before the internet? Ask
your parents or grandparents!

Modern Computing Landscape

●Smartphones

●Tablets

●Laptops

●Cloud computing

●Internet of Things (IoT)

●How many of these devices do you use daily?

Desktops vs Laptops

●Desktops:

●• Easier to upgrade

●• More powerful

●• Less portable

●Laptops:

●• Portable

●• Self-contained (screen, keyboard, speakers)

●• Often less powerful than desktops

●Which would you choose for school work? Why?

All-in-One Computers

●Combine CPU and monitor in one unit

●Sleeker, space-saving design

●Examples: iMac, Surface Studio

●Less upgradeable than traditional
desktops

●What are the pros and cons of this
design?

Servers: The
Backbone of IT

●Provide services to other computers

●More powerful and durable than regular
PCs

●Often rack-mounted in data centers

●Used for websites, databases, file storage

●Why do businesses need servers?

Mobile Devices: Smartphones and Tablets

●Evolved from PDAs (Personal Digital Assistants)

●Use solid-state storage (no moving parts)

●Sizes:

●• Smartphones: 4.5" to 5.7"

●• Phablets: 5" to 7"

●• Tablets: 7" to 10"

●How have mobile devices changed communication and daily life?

Internet of Things (IoT)

●Everyday objects connected to the internet

●Examples:

●• Smart lights

●• Thermostats

●• Security cameras

●• Medical devices

●How could IoT devices make your home or
school more efficient?

Home Automation

●Control home devices remotely

●Set schedules for lights, temperature, etc.

●Use voice commands with smart speakers

●Improve energy efficiency

●What would you automate in your home if
you could?

Gaming Consoles

●Specialized computers for playing games

●Have similar components to PCs

●Examples: PlayStation, Xbox, Nintendo Switch

●Some offer portable options

●How do gaming consoles differ from regular computers?

Original Equipment
Manufacturers (OEMs)

●Companies that build and sell computers

●Examples:

●• Dell

●• HP

●• Lenovo

●• Apple

●• Acer

●Which OEM made the device you're using
right now?

The Future of
Computing

●Artificial Intelligence and Machine
Learning

●Virtual and Augmented Reality

●Quantum Computing

●Wearable Technology

●What new technologies are you most
excited about?

Importance of IT Skills

●Growing demand for IT professionals

●High-paying career opportunities

●IT skills useful in many fields

●Continuous learning is key

●What IT skills would you like to develop?

Review: Basic
Computer Process

●Input: User provides data or commands

●Processing: CPU handles instructions

●Output: Results displayed or actions taken

●Storage: Data saved for future use

●Can you explain this process using a
real-world example?

Conclusion: The
Connected World

●Computers have evolved from room-sized
to pocket-sized

●IT impacts nearly every aspect of modern
life

●Understanding basic IT concepts is crucial

●The field continues to grow and change
rapidly

●How do you think computing will change in
the next 10 years?

Multiple Choice

What do IT systems process, store, and transfer?

• Energy

• Information

• Goods

• Services

Multiple Choice

Which of the following statements is true about early mainframe computers?

• They were used for gaming

• They were used for simple tasks like census tabulation

• They were used for video editing

• They were used for social media

Multiple Choice

What impact did personal computers have on people's lives?

• They made travel easier

• They changed the way people worked and lived

• They improved physical fitness

• They reduced the need for education

Multiple Choice

Which of these devices is specifically designed for mobile use and often includes a touchscreen?

• Desktop computer

• Tablet

• Mainframe

• Server

Multiple Choice

Which device is typically used for personal computing and is portable?

• Supercomputer

• Laptop

• Mainframe

• Server

Multiple Choice

All-in-One computers are generally:

• More upgradeable than traditional desktops

• Less upgradeable than traditional desktops

• Equally upgradeable as traditional desktops

• Not upgradeable at all

Multiple Choice

What is one of the primary functions of servers?

• To play video games

• To provide services to other computers

• To create graphics

• To edit videos

Multiple Choice

How do IoT devices typically connect to the internet?

• Through manual connections

• Through wireless networks

• Through physical cables only

• They do not connect to the internet

Multiple Choice

Which gaming console is known for its portability?

• PlayStation 4

• Xbox One

• Nintendo Switch

• PlayStation 3

Multiple Choice

Which of the following is a non-portable gaming console?

• Nintendo Switch

• PlayStation 5

• Game Boy

• PSP