HSC - ICT || English Version || Chapter-1 & 3 (Foundation) || 1st Live Class.

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Summary

In this 1st live class of HSC ICT (English Version), the instructor, Imran, embarks on an introductory journey into the basics of Information and Communication Technology (ICT). The session primarily revolves around the definition and foundational components of ICT, which is a union of Information Technology (IT) and Communication Technology (CT). Emphasis is placed on how information is a combination of data, and the role IT plays in securing this data digitally. The class further delves into types of data, including numerical data (integers and floating points) and non-numerical data (characters, strings, objects) along with the concept of Boolean data, which underlies device commands. Participants also get introduced to number systems, binary basics, and the concepts of positional and non-positional numbers. This foundational knowledge serves as a stepping stone for future classes. Students are encouraged to interact and ask questions throughout the class.

Highlights

Introduction to the course and excitement for the journey into ICT. 🎉
Explanation of ICT's full form and its two main components: IT and CT. 🔍
Explanation of how information is formed from individual data points. 📊
Discussion about ancient methods of data storage evolving into modern IT. 🗿➡️💻
Concept of servers and storage devices in IT and how they work. 🖥️💾
Understanding the internet's role as a communication channel, not a storage entity. 🌐
Detailed breakdown of data types: numerical (integer & floating point) and non-numerical (character & string). 🔢📄
Introduction to Boolean data and its role in device commands (yes/no, true/false). ✅❌
Insight into number systems, focusing on binary and the difference between positional and non-positional numbers. 0️⃣1️⃣
Encouragement for student participation and interaction throughout the class. ✋

Key Takeaways

ICT combines Information Technology and Communication Technology to manage and communicate data effectively. 💻
Information is essentially a blend of different data pieces, and ensuring its safe storage is a fundamental aspect of ICT. 🛡️
The internet acts merely as a communication pathway, not as a storage medium, emphasizing the distinct roles of ICT components. 🌐
Understanding different types of data (numerical, non-numerical, and Boolean) is crucial for comprehending how devices process and store information. 🔢
The distinction between positional and non-positional number systems is essential for understanding numerical representations in technology. 🔍

Overview

The class kicks off with an engaging introduction, where students are welcomed to their first ICT lesson. The instructor, Imran, shares his excitement about starting this new educational journey with them, teasing the intriguing world of Information and Communication Technology (ICT). Students are introduced to the foundational elements of ICT, learning about its components: Information Technology and Communication Technology, and the interplay between information and data.

As the session progresses, the intricacies of data types are unraveled. Students learn about numerical data—highlighting integers and floating points—and non-numerical data, including characters, strings, and objects. The concept of Boolean data emerges as a simple yet powerful mechanism governing yes/no commands within digital devices. This section is critical for students to appreciate the varied nature of data they interact with daily.

The class wraps up by exploring essential themes around number systems, emphasizing binary systems, and distinguishing between positional and non-positional numbers. This discussion sets the stage for future lessons, providing students with robust foundational knowledge. The class stands out for its interactive component, as students are encouraged to ask questions and engage actively, ensuring they grasp the concepts thoroughly.

Chapters

00:00 - 10:00: Introduction to ICT The chapter 'Introduction to ICT' begins with a conversation setting where a teacher and a student are getting to know each other. The student is named, yet it is left out in the text provided. As the conversation unfolds, the instructor expresses excitement about the start of a new class and journey into Information and Communication Technology (ICT). The conversation serves as an introductory engagement to delve into the concept of ICT, although the exact details of the ICT introduction are not provided within the transcript.
10:00 - 20:00: Types of Data The chapter "Types of Data" introduces the concept of Information and Communication Technology (ICT). It starts with clarifying the full form of ICT, which stands for Information and Communication Technology. The chapter then mentions that ICT is a combination of two different sectors, though it doesn't specify what those sectors are in this excerpt.
25:00 - 30:00: Introduction to Chapter 3 The introduction of Chapter 3 focuses on defining and distinguishing the terms Information Technology (IT) and Communication Technology (CT). IT encompasses all aspects of technology related to information, while CT specifically refers to the technologies that enable communication.
30:00 - 40:00: Number Systems and Positional Values This chapter titled 'Number Systems and Positional Values' introduces the concept of information technology by explaining that information is a combination of data. The instructor, named Md Imran, uses personal information to illustrate how data is used to form information.

HSC - ICT || English Version || Chapter-1 & 3 (Foundation) || 1st Live Class. Transcription

00:00 - 00:30 please unmute your microphone and tell me something about yourself mamum sirum asalam how are you I'm fine sir how are you yes I'm also fine tell me something about yourself sir my name is student from today is your first class and I'm very excited about this class uh this is your new Journey so at first I'm going to introduce you what is ICT actually
00:30 - 01:00 huh what is ICT ICT ICT the full form of I is information information and communication technology this is a full form of ICT but ICT cannot come first it is the combination of of two different sector
01:00 - 01:30 one of them is it and another one is C okay what is it it is mean it means Information Technology information technology and city which represent communication technology communication
01:30 - 02:00 technology okay what is information technology if I elaborate you in just one word information is a combination of data okay like if I if I tell you my name is mdimran and I'm your ICD course instructor I lived in Daka that means in this uh paragraph and in this details you will G my information so if I decentralize all of the things what is my name my name is for where I lived I
02:00 - 02:30 lived uh in Daka okay and what currently what I am doing now I am I am your instructor so there are three data available here one of them is my name another one my location and another one is my current Uh current working or current positions so the three data combine to each other and make it to a information so information is a combination of data so at first in
02:30 - 03:00 ancient period H in in in ancient time people U trying to keep their data secure and for the reason they are uh introducing many kinds of device and many kinds of uh um technology okay so there they invented a technology where people can store their data with a digital media that is called called Information
03:00 - 03:30 Technology if I ask you in 1971 what will happened in Bangladesh you will search it in Google and you will get many kinds of data from there so how can you get their data because the people uh uploaded the data in this uh server in this storage then after that we get this data that means at first uh invent Information Technology where people keep the data secure in a
03:30 - 04:00 storage device okay what is a storage device storage device is a device where people can store many kinds of data like uh you can tell memory card or hard dis or Ram I mean Random Access Memory that is all is information technology where people store the data now uh if I if you search uh if you search for pen or book in the internet you will get some pictures some data from there but uh
04:00 - 04:30 where the data is located they located the data in a storage device okay so in a storage device uh if uh if if we understand the storage device the storage device is called server what is server if you uh consider a computer as a server a computer has a memory card or your device has a memory card the memory card can keep the data
04:30 - 05:00 from the human then when a device keep the data in a human and he he can and it can deliver the data to the human that is called a storage device and a server that means what we get from the internet in every in any kinds of data in stored in This Server okay so that is called Information Technology where all the data
05:00 - 05:30 is stored in this storage device and if we stored all the data but if we can't communicate with that the data is not uh very necessary for all because if someone uploaded the data of 1971 in the storage device but we can't access them then this data is not very important to me because I can't access this data so when they invent uh information technology after that they feel we have
05:30 - 06:00 to communicate with the technology with the with the information with the data then we are uh we can also communicate with many many or mass audience Mass people with this data then it will very significant for all then they are trying to invent a technology where where people can access the information okay then people invent communication technology or uh
06:00 - 06:30 communication technology what is uh what if we call this is called internet we all know we think that everything is available in the internet right but actually internet have nothing internet internet have nothing no data is available internet so what is internet internet is a path of communication just that's that's it if I ask for book in the internet then they
06:30 - 07:00 communicate my data to me from the server to me from server then uh server and me the path is internet internet cannot bring any kinds of data Internet cannot hold cannot store the data Internet just a communication path okay so everything kept on the storage device that is called information technology and if we communicate with this technology communicate with the information it is called internet that
07:00 - 07:30 is called Information Technology hopefully you understand if you have any question please let me know in your chat box or raise your hand or you can unmute your microphone if you don't have please uh tell me then I can uh I can start a new topics please let me know you can write down on the chat box or you can unmute yes okay thank you
07:30 - 08:00 now okay what is uh the data there is a two type of data available here one of them is called there actually three types of data one of them is numerical numerical data another one is non- numerical
08:00 - 08:30 numeral data okay maybe you think uh you think where from I read uh today we just discuss about the basic uh topics of ICT because uh what you learn from this class and in in this class from this class you have learned many important things that you must need in
08:30 - 09:00 in F future class so now data numerical data the classification of numerical data if I elaborate to there is two type one of them is integer integer another one is called floating Point floating Point okay there's two kinds of numerical data
09:00 - 09:30 because okay non okay 23
09:30 - 10:00 3.15 in here you will get the two part of a number one of them is front part this is calleda flating point
10:00 - 10:30 and okay you you have to just think about your mobile phone or your device what you input actually we are using 1 2 3 4 we are also using .1 5.34 or something in your calculator in in the mobile phone or uh other electronics device that is called the numerical data which data contains a digit or number it's called the numerical data and what is non- numerical data actually non-numerical data there is a three
10:30 - 11:00 types of non-numerical data 1 2 3 one of them is character what is character character means English alphabet simple case English alphabet we called in ICT that is a character a b c or small smaller a b c that means I write down
11:00 - 11:30 the both of the item Capital One and the smaller one and device uh will understand both of the things in a different way if I call a in capital a device can't understand the smaller a they just understand the capital A that means capital A and smaller a are the different in the device because they
11:30 - 12:00 have case sensitivity what is case sensitivity huh um look at this board what is case sensitive case sensitive what is case sensitive character there is another name is case Capital word we call this upper case and smaller later we call it lower case okay A B C that is is called upper
12:00 - 12:30 case upper case Capital alphabet and lower or smaller that is called the lower case lower case so uppercase and lower case now we have to understand those things how device identifying all the character or all the case have a unique identity have a unique number I repeat
12:30 - 13:00 all the character or all the alphabet have their unique Identity or unique number you can uh call this as a role number like capital A has the role number 65 capital B has the role number is 66 in this way they have all the capital alphabet role number so capital A from capital Z they have the role number 65
13:00 - 13:30 to 90 and other hand smaller a to smaller Z have the role number 97 to 122 they have a different role number if you input capital A in your device they don't input smaller a they just input capital A how can device understand device understand from this kinds of role number which is actually working in inside the device which which is
13:30 - 14:00 actually working and uh there is a many format uh we will discuss um in details in in another class must so here they have if I input capital A they showing in a display capital A that means uh if we input smaller a they also show me small AR that means they have the sensitivity about the character or about the case right that means that is called
14:00 - 14:30 a case sensitivity if you understand the case and if you find out if you can find the difference between capital and smaller find the difference between upper and lower case that is called the case sensitivity that's why that's why device has the case sensitivity okay so now they fill the character capital and smaller a in a different form way that is called the non- numerical data
14:30 - 15:00 actually this is this is not a number okay
15:00 - 15:30 different
15:30 - 16:00 so
16:00 - 16:30 prop
16:30 - 17:00 but
17:00 - 17:30 okay fine so there is three type of U non-numerical data one of them is character another one is called the string so what is a string the string is called the combination of the character like if I if I would like to write my my name f yl that is the combination of six different character right so that
17:30 - 18:00 is called the string so what is a string a string is a word or sentence sentence if I would like to say I love Bangladesh that is a sentence that is called a string what what type of data that is a string okay so string is a word or sentence okay so here we we find two types of non numerical data one of them is character another one is a string there's a many kinds of data available
18:00 - 18:30 still available here in our mobile phone okay like uh our mobile phone contain the images contain the object contain the audio clip contain the video clip contain the text file uh contain the application there's many kinds of data still available in our mobile phone so in uh and an audio audio is a data video is a data that is not an integer type of data
18:30 - 19:00 that is not a floating that is also not a character or string okay so what is this this is this is called the object what is object object contain audio data video data video text data or Texture document then uh then APK APK or application
19:00 - 19:30 application epic is a file extension actually so that is called the object type of data so that is the full form of the data data contains uh many kinds of uh important element of the of our device that I have three types of data available here one of them is numerical another one is non-numerical and the other one is Boolean Boolean what is Boolean I will elaborate
19:30 - 20:00 you later so here is uh there is two type of numerical data one of this integer and another one is the is floating Point what is non-numerical non-numerical data has three types character string and objects so character means the uppercase and lower case uh string means word sentence and object contain audio video text ATC so what is Boolean in just one word Boolean Boolean means the command of a
20:00 - 20:30 device if you open application like you open camera that means you give the command right so device or every single things in our daily life just working with just two type of command one of them is called yes another one is called
20:30 - 21:00 no right if you open application that means the command is yes if you close the application that means the command is no if you pick a phone if you pick a call that means you command device you command the devices yes if you don't Pi that means the commment is no device will not understand any kinds of human language
21:00 - 21:30 they just understand the only two digit one of them is zero and another one is one that means zero and one is a machine language it's not our language our language is many language English bang or ITC but device has only one language but is called binary and that's why binary is called machine language where zero represent no or false zero represent no or false and one represent yes or true that means zero and one
21:30 - 22:00 represent theirself as a command here right Z zero and one what is this this is a integer data this is a data this is a number this is a digit but they represent theirself as a command here when zero and one working as a command then that is called the Boolean number okay I repeat when 0er and one represent the name as a command then that is
22:00 - 22:30 called the Boolean number Z and one can represent theirself as a digit also then that is called the integer number but if they represent theirself as a common then it is called the Boolean number okay have you if you have any question please let me know if you don't have also you can tell me about this I have a question yes
22:30 - 23:00 pleasee so mention about this Str and included about so to write the sentence we need to put some spes in the so are the cas working in case of this spes is it recognized yes space also a kind of um data and that is called the stram data um in chapter 3 we'll elaborate the type of the data okay uh where we find the specific
23:00 - 23:30 number of the data please one minute I just close my draw okay yes okay so as you say that string can also hold space greater than sign less than sign comma full stop semicon or many kinds of other uh uh other symbol so all of them is called the string is one word all of them is a string and they have also a different
23:30 - 24:00 type of number different type of role number actually okay it will uh we we disc discuss in chapter 3 okay okay chapter information
24:00 - 24:30 65 to9
24:30 - 25:00 for
25:00 - 25:30 okay let me start chapter 3 3.1 in this chapter we we you will get the two part of this chapter one of them is number
25:30 - 26:00 another one is the digital device so in this part number system what is number uh it is all about binary zero or one in this chapter we mainly discuss about the binary what actually computer or device do in inside of this device so let's start the road map of this chapter we have eight different lecture the lecture one is foundation of details
26:00 - 26:30 Foundation details about number system number two conversion of number system six Technique One Two now uh here there is a 12 conversion in the number system so in lecture two we will learn six item and lecture three we will learn uh remaining six item after that we have an exam topic test and lecture four summation of binary hexad decimal then lecture six compliments in details
26:30 - 27:00 lecture six Math compliments lecture seven practice board question uh lecture eight code in details after that we have the McQ test and chapter test written questions so in every class we just learned 40 minutes in mathematics and remaining 20 or 30 minutes for chapter one Theory today we are just discuss about something um very basic about ICT now now we are going to present our first class lecture the
27:00 - 27:30 foundation of number system here digit and number what is digit and what is number okay so at first U okay that is number okay at first what is digit in our daily life we are using many kinds of sign or symbol in our daily life okay so we are using plus minus greater than less than also one two is all of them is
27:30 - 28:00 a symbol or sign but they have a particular or specific name that is plus that is minus that is one that is two if I ask for count the book in front of you where from we start we must start from one two right that means we are using many kinds of symbol and sign in order Del but we don't use them for count okay we just use one two for counting that
28:00 - 28:30 means the symbol of character used to Counting are called digit okay for example 1 58 I repeat the symbol of characters used for counting which symbol is used for counting is called the digit okay there's uh many kinds of symbol available but we don't use uh those symbol for counting okay now what is number when multiple digit are placed together they form a number like 158 29
28:30 - 29:00 that is a number when the digit placed together placed each other that is called the number like 158 158 and 29 that means if uh I write down like this where one that is a digit and the two place is called the number now classification of the number there's a two type of number available here one is positional number Bang
29:00 - 29:30 another one is the nonpositional number or right every digit has a two types of value in fact we we have the two type of
29:30 - 30:00 value right we all are men that means we have the original value is men but my role here is the here is my role is teacher Your Role is student we we also represent some different role in my our different place if I job somewhere else represent myself as a employee or something that means we have a many role and we have original role that is the main also a digit have two kinds of
30:00 - 30:30 value one of them is their own value that means five we don't call them like six another one is their place value right that means okay so the definition of the positional number is a number that has both value of its own and a positional value both place
30:30 - 31:00 value and phase value is called a positional number yes okay fine uh then uh nonpositional or you can what is nonpositional very simple in ancient period where people used to count many different way
31:00 - 31:30 like someone count from the stone and someone counts like Star so when people feel that they need to count their accessories then uh they're using they are used to invent a new way one of them is a Roman Roman used to uh Roman used in ancient period when uh a digital number is not invented then they're using ran
31:30 - 32:00 tally also they're using hieroglyphics here if uh if I ask you that what is this you must say two why not we call them 11 why because they don't have their positional value here here we call 11 because both of this one have their positional value but here we don't have their positional
32:00 - 32:30 value that's why we just call them two and just call them three because they don't also have their positional value also there is a tally so tally math um there is a five if we write down this this is a two or without the red thing that is a four so this is this also don't have their positional value if the if they have the positional value we must call them like one
32:30 - 33:00 1,111 if they don't have their positional value then we just call them like four okay so what is a non-positional number a number that has a value of its own just their own value but La positional value is called non-positional number that mean they have only their own value that mean they don't have their phase value or own value but they don't have their positional values called the
33:00 - 33:30 nonpositional number for an example uh Roman number tally marks and hieroglyphics that is a using that the numerical system using anent terms that is a non-positional number okay so part of the number there's the two part of a number one of them 12635 as we said before 126 is a integer number there's a first part of this number and another one is the floating
33:30 - 34:00 point 35 this point is called the Redix point I repeat that is called the Redix Point Redix Point what is Redix Point Rix Point uh divided the two um integer and floating Point okay so now we check the question Bank what is the number we also know that what is the number uh second one how many types of numbers we know that the two types of number uh what is the positional number we also
34:00 - 34:30 know that the positional number the positional number have two types of value one of them is their own value and another one is the place value so what is the non-positional number non-positional number uh when when the digit only have their own value they don't have their positional value is called their non-positional number what is the hieroglyphics hieroglyphics is a number system which actually used in ancient time okay you must understand these things hieroglyphics Roman and T
34:30 - 35:00 is a number system what actually used in ancient times or ancient periods and what is Rix Point Rix point is a point which can divide it a integer and floating number okay so this is our um basic item so if you have any question let me know otherwise I will go forward that is my Facebook page YouTube channel and my uh website address that is my contact
35:00 - 35:30 number this contact number of my assistant say his name is mahadi if you have any problem you can contact with me or directly or my assistant okay um there is something about myself [Music]
35:30 - 36:00 confed
36:00 - 36:30 okay so start now
36:30 - 37:00 instu
37:00 - 37:30 automated system uplo service
37:30 - 38:00 right Facebook thank you
38:00 - 38:30 everyone hopefully you also understand and enjoy this class and okay
38:30 - 39:00 Alam