How is the integer 255 represented in memory?
Question
How is the integer 255 represented in memory?
Solution
In memory, the integer 255 is represented in binary format. Here are the steps to convert the decimal number 255 to binary:
- Divide the number by 2.
- Record the remainder.
- Divide the quotient from the previous step by 2.
- Repeat steps 2 and 3 until the quotient is 0.
Let's do this for 255:
- 255 divided by 2 is 127 remainder 1.
- 127 divided by 2 is 63 remainder 1.
- 63 divided by 2 is 31 remainder 1.
- 31 divided by 2 is 15 remainder 1.
- 15 divided by 2 is 7 remainder 1.
- 7 divided by 2 is 3 remainder 1.
- 3 divided by 2 is 1 remainder 1.
- 1 divided by 2 is 0 remainder 1.
So, if we read the remainders from bottom to top, we get the binary representation of 255 as 11111111.
In memory, this binary number is stored as a sequence of bits. Depending on the system and programming language, the size of an integer in memory can vary. For example, in a system where integers are 32 bits, the number 255 would be stored as 00000000 00000000 00000000 11111111.
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