Characters 3
Explain why communication systems, that enable the use of emojis, will make use of the Unicode character set instead of the ASCII character set.
Data Representation
Characters 1
The following table shows the ASCII codes for several characters. Character ASCII Code A 65 B 66 C 67 D 68 Explain, with an example, how a computer would represent ‘DAB’ in ASCII.
Hexadecimal 1
Why might computer scientists prefer to work with hexadecimal numbers, compared to binary numbers?
Binary Numbers 3
Describe the binary shift that has taken place to alter the binary number with denary value 216, to a denary value of 54.
Binary Numbers 2
Describe the binary shift that can be carried out on a binary number, which will multiply the number by 4.
Binary Numbers 1
What is meant by the term ‘Overflow Error’, that may result when adding two 8-bit binary numbers together?
Binary Units 3
Providing approximations only, how many bytes are in: – A Megabyte? – A Kilobyte? – A Gigabyte? – A Petabyte? – A Terabyte?
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