Denary to Unsigned Binary (2 marks)
Convert the denary number 18 into an 8-bit binary number as an unsigned integer.
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2.1 Binary
Two’s Complement Conversion (3 marks)
Convert the 8-bit binary number 11110110 into a denary number using two’s complement.
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Choosing Unsigned Integer Over Signed Integer (2 marks)
Why would a computer scientist choose to use an unsigned integer instead of a signed integer when designing a system?
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Binary in Program Instructions (3 marks)
Describe how a simple program instruction is represented in binary and processed by the CPU.
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Two’s Complement (2 marks)
Explain, in your own words, the difference between an unsigned integer and a two’s complement signed integer.
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Binary and Graphics (4 marks)
A bitmap image has a width of 5 pixels and a height of 4 pixels, with a colour depth of 3 bits per pixel. Calculate the total number of bits required to represent this image.
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Binary and Sound (2 marks)
Explain how binary is used to represent sound in a digital audio file.
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Calculating Binary States (3 marks)
Calculate the maximum number of states that can be represented by a binary pattern that is 4 bits in length.
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Binary Representation of Numbers (1 mark)
Explain how the binary number system is used to represent numerical data in computers.
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Binary Representation of Characters (2 marks)
Describe how text characters are represented in binary form in a computer system.
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