Computer ScienceCode 9618
Data Representation
What this topic asks you to be able to do
- Demonstrate comprehension of binary magnitudes, and of how binary prefixes differ from decimal prefixes
- Demonstrate comprehension of various number systems
- Use binary, denary and hexadecimal as number bases, along with Binary Coded Decimal (BCD) and the one’s and two’s complement forms of binary numbers
- Convert an integer value from one base or representation to a different one
- Perform binary addition and binary subtraction on binary integers that may be positive or negative
- Demonstrate comprehension of the manner in which overflow may arise
- Describe real-world uses of Binary Coded Decimal (BCD) and hexadecimal
- Demonstrate an understanding of how character data is held internally as binary, which varies with the character set in use, and be able to write characters in that form