Overflow (Edexcel GCSE Computer Science): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What causes overflow in a computer system?
What causes overflow in a computer system?
Result needs more bits than available
Why can't an 8-bit register store a 9-bit result?
Why can't an 8-bit register store a 9-bit result?
Registers have fixed sizes
When adding two 8-bit binary numbers, how many bits might the result need?
When adding two 8-bit binary numbers, how many bits might the result need?
9 bits
What happens to the 9th bit when a 9-bit result is stored in an 8-bit register?
What happens to the 9th bit when a 9-bit result is stored in an 8-bit register?
It gets lost
Which is a consequence of overflow errors?
Which is a consequence of overflow errors?
Incorrect calculation results
How do high-level programming languages help with overflow?
How do high-level programming languages help with overflow?
Built-in detection & handling
What is the 9-bit result of adding and ?
What is the 9-bit result of adding and ?
How many binary digits can an 8-bit register hold?
How many binary digits can an 8-bit register hold?
Exactly 8
In , which bit position is the overflow bit for an 8-bit system?
In , which bit position is the overflow bit for an 8-bit system?
The leftmost 1 (9th bit)
What critical problem can overflow cause in important systems?
What critical problem can overflow cause in important systems?
Dangerous system failures
Why is overflow a problem in computer programs?
Why is overflow a problem in computer programs?
Stored result differs from actual
How can you quickly check if binary addition has overflow?
How can you quickly check if binary addition has overflow?
Result has more bits than original