Two's complement signed integers (Edexcel GCSE Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is two's complement used for in computing?
What is two's complement used for in computing?
Representing signed integers
What does it mean when the MSB is 0 in two's complement?
What does it mean when the MSB is 0 in two's complement?
The number is positive
What does it mean when the MSB is 1 in two's complement?
What does it mean when the MSB is 1 in two's complement?
The number is negative
Where is the MSB located in a binary number?
Where is the MSB located in a binary number?
Leftmost bit
What is one's complement in the two's complement process?
What is one's complement in the two's complement process?
Result after flipping all bits
What is the first step in converting a positive number to negative using two's complement?
What is the first step in converting a positive number to negative using two's complement?
Write positive number in binary
After flipping all bits in two's complement, what is the next step?
After flipping all bits in two's complement, what is the next step?
Add 1
What is 0101 in two's complement after converting to negative?
What is 0101 in two's complement after converting to negative?
1011
Can the two's complement algorithm convert negative numbers back to positive?
Can the two's complement algorithm convert negative numbers back to positive?
Yes, same process works both ways
What can happen when adding 1 in binary during two's complement?
What can happen when adding 1 in binary during two's complement?
Carries can occur
Why does two's complement make computers more efficient?
Why does two's complement make computers more efficient?
Same circuits for add and subtract
What is a common mistake when converting using two's complement?
What is a common mistake when converting using two's complement?
Not flipping every single bit