CourseHES 213

Week11 of 16

SemesterII

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This week’s topics

Storing images: pixels and colour depth

Pixels and resolution
Colour depth and file size

What you will be able to do

3.1 Explain how text, images and sound are represented in binary.

Activity

Draw a small black-and-white image in binary.

Study materials

Further resources

Workplace Software and Skills, 1.1: Digital images · PDF · OpenStax Workplace Software and Skills (2023), 1.1 on the first digital image: a photo stored as pixels in binary, pp. 18–19 · for registered students
CSS Notes for Professionals, ch. 18: Colors · PDF · GoalKicker CSS Notes for Professionals, ch. 18: RGB colour values (8 bits per channel, 24-bit colour), pp. 115–125 · for registered students

Materials marked “for registered students” open in the student portal, which is set up as soon as you receive final acceptance.

Week 10 Week 12

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Course plan

Week 1: What is a computer system?
Week 2: Hardware: the parts of a computer
Week 3: Software: system and application software
Week 4: The CPU and the fetch-execute cycle
Week 5: Memory: RAM, ROM and cache
Week 6: What an operating system does
Week 7: Comparing operating systems
Midterm: Midterm evaluation
Week 9: Bits and bytes: units of storage
Week 10: Storing text: ASCII and Unicode
Week 11: Storing images: pixels and colour depth
Week 12: Storing sound: sampling
Week 13: Storage devices
Week 14: Choosing a computer for a job
Week 15: Review and coursework completion
Final: Final assessment and submission

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