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Google의 강좌에서

Technical Support Fundamentals

12623개의 평가

Google

Technical Support Fundamentals

12623개의 평가

Specialization Google IT Support Professional Certificate에서 5의 강좌 1

This course is the first of a series that aims to prepare you for a role as an entry-level IT Support Specialist. In this course, you’ll be introduced to the world of Information Technology, or IT. You’ll learn about the different facets of Information Technology, like computer hardware, the Internet, computer software, troubleshooting, and customer service. We’ll go through what a technical interview could look like, and provide tips on how to best prepare for one. This course covers a wide variety of topics in IT that are designed to give you an overview of what’s to come in this certificate program. By the end of this course, you’ll be able to: ● understand how the binary system works. ● assemble a computer from scratch. ● choose and install an operating system on a computer. ● understand what the Internet is, how it works, and the impact it has in the modern world. ● learn how applications are created and how they work under the hood of a computer. ● utilize common problem-solving methodologies and soft skills in an Information Technology setting.

수업에서

Introduction to IT

Welcome to Technical Support Fundamentals, the first course of the IT Support Professional Certificate! By enrolling in this course, you are taking the first step to kickstarting your career in tech. In the first week of the course, we'll learn about how computers were invented, how they've evolved over time, and how they work today. We will also learn about what an "IT Support Specialist" is and what they do in their job. By the end of this module, you will know how to count like a computer using binary and understand why these calculations are so powerful for society. So let's get started!

Computer Language3:00

Character Encoding3:04

How to Count in Binary3:04

강사 만나기

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You might be wondering how our computers get these ones and zeros.

It's a great question. Imagine we have a light bulb and

a switch that turns the state of the light on or off.

If we turn the light on,

we can denote that state is one.

If the light bulb is off,

we can represent the state is zero.

Now imagine eight light bulbs and switches,

that represents eight bits with a state of zero or one.

Let's backtrack to the punched cards that were used in Jacquard's loom.

Remember that the loom used cards with holes in them.

When the loom would reach a hole it would hooked to thread underneath,

meaning that the loom was on.

If there wasn't a hole,

it would not hook the thread, so it was off.

This is a foundational binary concept.

By utilizing the two states of on or off,

Jacquard was able to weave intricate patterns of the fabric with his looms.

Then the industry started refining the punch cards a little more.

If there was a hole,

the computer would read one.

If there wasn't a hole, it would read zero.

Then, by just translating the combination of zeros and ones,

our computer could calculate any possible amount of numbers.

Binary in today's computer isn't done by reading holes.

It uses electricity via transistors allowing electrical signals to pass through.

There's an electric voltage,

we would denote it as one.

If there isn't, we would denote it by zero.

For just having transistors isn't enough for our computer to be able to do complex tasks.

Imagine if you had two light switches on opposite ends of a room,

each controlling a light in the room.

What if when you went to turn on the light with one switch,

the other switch wouldn't turn off?

That would be a very poorly designed loom.

Both switches should either turn the light on or off depending on the state of the light.

Fortunately, we have something known as logic gates.

Logic gates allow our transistors to do more complex tasks,

like decide where to send electrical signals depending on logical conditions.

There are lots of different types of logic gates,

but we won't discuss them in detail here.

If you're curious about the role that

transistors and logic gates play in modern circuitry,

you can read more about it in the supplementary reading.

Now we know how our computer gets its ones and

zeros to calculate into meaningful instructions.

Later in this course, we'll be able to talk about how we're able to turn

human-readable instructions into zeros and

ones that are computer understands through a compilers.

That's one of the very basic building blocks of

programming that's led to the creation of our favorite social media sites,

video games, and just about everything else.

And I'm super excited to teach you how to count in binary, that's up next.

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