LEARN TO CODE
LEARN TO CODE
A numbering system that uses only 0s and 1s to represent data.
Electronic circuits that implement Boolean logic functions, such as AND, OR, and NOT.
Digital electronic devices that store data and operate on it.
A numbering system that uses base 10, also known as the decimal system.
A mathematical error that occurs when a calculation exceeds the maximum value that can be stored or represented.
A numbering system that uses base 16, and uses 0-9 and A-F to represent values from 0 to 15.
Logical Binary Shift:
An operation that moves all the bits of a binary number to the left or right, while preserving the sign of the number.
Most Significant Bit(s):
The leftmost bit(s) of a binary number, which have the highest place value.
A method of representing negative numbers in binary by inverting all the bits and adding 1 to the result.
A character encoding system that represents text using 7 or 8 bits per character.
Collections of characters and symbols that are used to represent text in computing.
A character encoding system that supports a wide range of languages and scripts, including emoji.
Sound Sample Rate:
The number of times per second that a sound signal is measured or sampled to create a digital representation.
Sound Sample Resolution:
The number of bits used to represent each sample of a sound signal.
Signals that are continuous and vary smoothly over time.
Short for "picture element," a single point in a digital image.
The number of pixels in an image, usually measured as width x height.
Image Colour Depth:
The number of bits used to represent the colour of each pixel in an image.
Techniques used to reduce the amount of data needed to store or transmit information.
A type of data compression that reduces file size by permanently removing some of the data.
A type of data compression that reduces file size without removing any data.
Run Length Encoding:
A simple form of data compression that replaces long runs of repeating data with a shorter code.
The amount of data that can be transmitted over a network or communication channel in a given amount of time.
ALSO IN THIS TOPIC
1.1.1 NUMBER SYSTEMS
| Why Computers use Binary
1.1.2 NUMBER SYSTEMS
| Binary, Hex and converting between number systems
1.1.3 NUMBER SYSTEMS
| Benefits of Hex
1.1.4 NUMBER SYSTEMS
| Binary Addition and Overflow
1.1.5 NUMBER SYSTEMS
| Binary Shifts
1.1.6 NUMBER SYSTEMS
| Negative Number Representation, Two's Complement
1.2.1 TEXT, SOUND AND IMAGES
| How Computers Represent Text
1.2.2 TEXT, SOUND AND IMAGES
| How Computers Represent Sound
1.2.3 TEXT, SOUND AND IMAGES
| How Computers Represent Images
1.3.1 STORAGE AND COMPRESSION
| How Data Storage is Measured
1.3.2 STORAGE AND COMPRESSION
| Calculating Image and Sound File Size
1.3.3 STORAGE AND COMPRESSION
| Purpose of Data Compression
1.3.4 STORAGE AND COMPRESSION
| Lossy and Lossless, how files are compressed
TOPIC 1 KEY TERMINOLOGY
TOPIC 1 ANSWERS
TOPIC 1 TEACHER RESOURCES (CIE)
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