The Number System and Data Representations in Computer Science
Learn addition and subtraction in binary, octal, and hexadecimal number systems in this computer science lesson.
00:00:02 In this video lesson, Professor Paulina Lovalinga teaches students about the number system and data representations. It introduces distance learning as an alternative to traditional classrooms.
💡 Distance learning platform developed for secondary school students in Cameroon.
🎓 Introduction to distance learning as a teaching method.
🔢 Explanation of the number of symbols in different number systems.
00:04:51 This video is about addition and subtraction in base 2, 8, and 16. It covers valid binary numbers and exercises to improve understanding.
💡 Valid binary numbers are made up of a sequence of zeros and ones, and it is important to specify the base.
🔢 This lesson focuses on addition and subtraction in base 2, 8, and 16.
📚 To understand this lesson, you need to be able to identify valid numbers in a given base, add and subtract in base 10, and determine remainders and quotients when dividing numbers.
00:09:35 Learn how to divide numbers and perform addition and subtraction using column methods in this computer science video lesson.
🔢 When dividing numbers, we get a quotient and a remainder.
➕ To perform addition, we reorganize numbers into columns and add them column by column.
➖ To perform subtraction, we reorganize numbers into columns and subtract them column by column.
00:14:19 This video explains how to perform addition and subtraction in binary, octal, and hexadecimal number systems. It also highlights the principles of carrying and borrowing in these systems.
Borrowing from the left column in the number system allows us to subtract and add digits.
Real-life applications of addition and subtraction in binary, octal, and hexadecimal.
The principle of addition in base systems: dividing by the base and carrying remainder and quotient.
00:19:06 This video explains the addition of numbers in different number systems, including binary, octal, and hexadecimal. It also introduces the principle of subtraction.
🔢 Addition in different number systems
✖️ Subtraction in different number systems
00:23:54 This video explains subtraction in different number systems, including binary, octal, and hexadecimal. Borrowing is used when necessary. Exercises are provided.
Performing subtraction in different number systems.
Borrowing values in subtraction in different number systems.
Examples of subtraction in binary, octal, and hexadecimal number systems.
00:28:35 Learn addition and subtraction in different number systems. Understand borrowing and reorganizing columns to perform calculations.
🔢 The video explains addition and subtraction in different number systems, specifically base 16 and base 8.
🔠 It demonstrates how to convert symbols in base 16 to corresponding letters and subtract numbers in base 8 by borrowing.
💻 The lesson recommends practicing different operations in base 2 and mentions the upcoming topic of number base conversion.
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