11 mark
Convert the denary number 189 to hexadecimal.
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Data Types (OCR A Level Computer Science)
Exam Questions
10 mins4 questions21 mark
Convert the unsigned binary number 1010101111 to hexadecimal.
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13 marks
The normalised floating point binary number 0100 1110 is stored using 4 bits for the mantissa and 4 bits for the exponent, both in two’s complement.
Convert this number to denary.
You must show your working.
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25 marks
Show how the denary value −9.125 can be represented in normalised floating point format, using 8 bits for the mantissa and 4 bits for the exponent, both in two’s complement.
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