Representing and manipulating data in computers
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Learn how computers store and manipulate data, including ASCII code and Unicode. Understand data representations and limitations, data compression, input/output subsystems, and computer programs. Gain insights into the inner workings of computers. Start your journey now!
Computers are all around us: in cars, kitchen scales, digital cameras, etc. But how do they store the data they hold? This free course, Representing and manipulating data in computers, will help you to understand how the data in a computer represents something in the outside world. You will also explore how ASCII code and Unicode are used to control data.
Course learning outcomes
After studying this course, you should be able to:
Understand what all the terms highlighted in bold in the text mean
Understand how the following types of data are represented in a computer, and what the limitations of such representations are: positive and negative integers
Fractions
Analogue physical quantities such as weight
True/false quantities
Still pictures
Text
Moving pictures
Sound
Understand at an introductory level what data compression is and why it is useful
Understand at an introductory level how input and output subsystems support the conversion of various types of information to and from data types usable by a computer
Describe what a computer program is and how it utilises the memory and the processor.
