Chapter 01
Data Representation
Teacher
林顥羽 Lin Hao-Yu
Lesson Introduction
There will be 3 sections in this chapter, along with 6 videos.
Section 1: Number Systems
01 Denary and Binary Systems
02 Hexadecimal System and its usage
03 Arithmetic Operation of Binary Numbers
04 Two's Complement
Section 2: Text, Sound and Images
05 Text, Sound and Images
Section 3: Data Storage and Compression
06 Data Storage and Compression
Lesson Objectives
To understand the data representation in computers.
01 Denary and Binary Systems
Binary and denary number system
Convert between binary and denary
02 Hexadecimal System and its usage
Hexadecimal number system
Convert between hexadecimal and binary
Convert between hexadecimal and denary
Use of the hexadecimal system
03 Arithmetic Operation of Binary Numbers
Addition of binary numbers
Logical binary shifts
04 Two's Complement
Two’s complement
05 Text, Sound and Images
Character sets (ASCII code and Unicode)
Representation of sound
Representation of (bitmap) image
06 Data Storage and Compression
Measure of data storage
Calculation of file size
Data compression
Lossy and lossless file compression
Reference
Textbook: Cambridge IGCSETM, Computer Science 0478, Chapter 1 (page 2 - 44)