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Introduction to ICT
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The basic depth to know about ICT, which includes binary, logic gates, about modern computers and many others. This note will help to understand about ict easily and in depth.
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● Introduction● From Abacus to Analytical Engine
● The Path to Modern Computers
● Computer language
● Character coding
● Binary
● Logic gates
● How to count binary
● Abstraction
● Computer architecture overview
INTRODUCTION
So what exactly is information technology? IT is essentially the use of digital technology, like
computers and the internet, to store and process data into useful information.
IT helps people solve meaningful problems by using technology, which is why you'll see its
influences in education, medicine, journalism, construction, transportation, entertainment, or
really any industry on the planet. IT is about changing the world through the ways we
collaborate, share and create together.
IT skills are becoming necessary for day to day living, like finding a job, getting an education
and looking up your health information.
There's a growing skills gap known as the digital divide. People without digital literacy skills are
falling behind. But people like you are the real solution to bridging that digital divide.
Overcoming the digital divide, not only involves confronting and understanding the combination
of socio economic factors that shape our experience, but also helping others confront and
understand those experiences,, but also helping others confront and understand those
experiences.
What does an IT Support Specialist do?
So what's the day-to-day work of someone in IT support like?
Well, it varies a ton, based on whether you're doing personal or remote support and at a
small business or a large enterprise company. And there's really no such thing as day-to-day
work, since the puzzles and challenges are always new and interesting.
But in general, an IT support specialist makes sure that an organization's technological
equipment is running smoothly. This includes managing, installing, maintaining, troubleshooting
and configuring office and computing equipment.
, From Abacus to Analytical Engine
When you hear the word computer,These fancy devices aren't what people had in mind when
computers were first created. To put it simply, a computer is a device that stores and processes
data by performing calculations. Before we had actual computer devices, the term computer
was used to refer to someone who actually did the calculation.
We'll learn about the journey computers took from the earliest known forms of computing into
the devices that you know and love today.
Historical context can help you understand why things work the way they do today. Have you
ever wondered why the alphabet isn't laid out in order on your keyboard? The keyboard layout
that most of the world uses today is the qwerty layout, distinguished by the Q, W, E, R, T, and Y
keys in the top row of the keyboard.
The most common letters that you type aren't found on the home row, where your fingers hit the
most. But why? There are many stories that claim to answer this question. Some say it was
developed to slow down typists so they wouldn't jam old mechanical typewriters. Others claim it
was meant to resolve problems for telegraph operators. One thing is for sure, the keyboard
layout that millions of people use today isn't the most effective one. Different keyboard layouts
have even been created to try and make typing more efficient. Now that we're starting to live in
a mobile-centric world with our smartphones, the landscape for keyboards may change
completely.
Do you know what an abacus is?
it's actually one of the earliest known computers. It was invented in 500 Bc to count large
numbers. While we have calculators like the old reliable TI-89s or the ones in our computers,
abacuses actually are still used today.
The first major step forward was the invention of the mechanical calculator in the 17th by Blaise
Pascal.
This device used a series of gears and levers to perform calculations for the user automatically.
While it was limited to addition, subtraction, multiplication and division for pretty small numbers,
it paved the way for more complex machines.
The fundamental operations of the mechanical calculator were later applied to the textile
industry. Before we had streamlined manufacturing, looms were used to weave yarn into fabric.
If you wanted to design patterns on your fabric, that took an incredible amount of manual work.
In the 1800s, a man by the name of Joseph Jacquard invented a programmable loom. These
looms took a sequence of cards with holes in them. When the loom encountered a hole, it would
hook the thread underneath it. If it didn't encounter a hole, the hook wouldn't thread anything.
Eventually this spun up a design pattern on the fabric. These cards were known as punch cards.
He probably didn't realize that his invention would shape the world of computing and the world
itself today.
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