This section is part of the AS specification, but creates a foundation for the full A Level. There is a reasonable expectation for some of this content to return in paper 3 and so it is worthwhile returning to this when you begin the advanced course.
Topic | I should be able to… |
---|---|
1.1 | Show understanding of binary magnitudes and the difference between binary prefixes and decimal prefixes |
| Understand the difference between and use: • kibi and kilo • mebi and mega • gibi and giga • tebi and tera |
| Convert between (i) positive denary and positive binary (ii) positive denary and positive hexadecimal (iii) positive hexadecimal and positive binary |
| Use the binary, denary, hexadecimal number bases and Binary Coded Decimal (BCD) and one’s and two’s complement representation for binary numbers |
| Perform binary addition and subtraction |
Describe practical applications where Binary Coded Decimal (BCD) and Hexadecimal are used | |
Show understanding of and be able to represent character data in its internal binary form, depending on the character set used |