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Computer Science
·
Cambridge A-Level
Information representation and multimedia
Syllabus Learning Objectives
0 / 23 completed
0%
Learning Outcomes
01
Show understanding of binary magnitudes and the difference between binary prefixes and decimal prefixes
02
Understand the difference between and use: kibi and kilo, mebi and mega, gibi and giga, tebi and tera
03
Show understanding of different number systems
04
Use the binary, denary, hexadecimal number bases and Binary Coded Decimal (BCD) and one’s and two’s complement representation for binary numbers
05
Show understanding of how overflow can occur
06
Describe practical applications where Binary Coded Decimal (BCD) and Hexadecimal are used
07
Show understanding of and be able to represent character data in its internal binary form, depending on the character set used
08
Show understanding of how data for a bitmapped image are encoded
09
Use and understand the terms: pixel, file header, image resolution, screen resolution, colour depth/ bit depth
10
Show understanding of the effects of changing elements of a bitmap image on the image quality and file size
11
Use the terms: image resolution, colour depth / bit depth
12
Show understanding of how data for a vector graphic are encoded
13
Use the terms: drawing object, property, drawing list
14
Show understanding of how sound is represented and encoded
15
Use the terms: sampling, sampling rate, sampling resolution, analogue and digital data
16
Show understanding of the impact of changing the sampling rate and resolution
17
Show understanding of the need for and examples of the use of compression
18
Show understanding of lossy and lossless compression and justify the use of a method in a given situation
19
Show understanding of how a text file, bitmap image, vector graphic and sound file can be compressed
20
Convert an integer value from one number base/ representation to another
21
Perform binary addition and subtraction
22
Perform calculations to estimate the file size for a bitmap image
23
Justify the use of a bitmap image or a vector graphic for a given task
