Lesson 1 Introduction to binary
Learning Objectives:
- Define the terms bit, nibble, byte, kilobyte, megabyte, gigabyte, terabyte
- Understand that data needs to be converted into a binary format to be processed by a computer
- Convert positive denary whole numbers (0-255) into 8-bit binary numbers and vice versa
Textbook Ref:
- binary data 144
Lesson 2 Binary, denary and hexadecimal
Learning Objectives:
- Convert positive denary whole numbers (0-255) into 2-digit hexadecimal numbers and vice versa
- Convert between binary and hexadecimal equivalents of the same number
- Explain the use of hexadecimal numbers to represent binary numbers
- Add two 8-bit binary integers and explain overflow errors which may occur
Textbook Ref:
- binary data 144
Lesson 3 Representing characters and dates
Learning Objectives:
- Understand how characters are represented in binary
- Become familiar with ASCII and its limitations
- Understand how dates are represented in binary
- Understand what is meant by the terms data and information
Textbook Ref:
- binary data 144
Lesson 4 Images
Learning Objectives:
- Understand how a bitmap graphic is made up of individual pixels
- Explain how each pixel is represented in binary
- Understand that the number of bits per pixel determines the number of available colours for an image
- Explain the need for image metadata
- Explain the relationship between file size and image resolution
Lesson 5 Sound
Learning Objectives:
- Understand how sound is sampled and stored in digital form
- Be able to represent a short sound file in binary
- Explain how sampling intervals and resolution affect the size of a sound file
- Explain the trade-off between file size and the quality of playback
Textbook Ref:
- sound data files 145–147
- speakers 120
Lesson 6 Assessment
Learning Objectives:
Students will
- apply their knowledge in answers to a range of questions
- be able to highlight areas of strength and any gaps in their understanding of computers
AQA Student Handbook Presentation
