Binary Numbers

The binary number 10101010 is an 8-bit two’s complement binary number. What is the decimal equivalent?

Why would a computer scientist choose to use an unsigned integer instead of a signed integer when designing a system?

Convert the 8-bit binary number 11110110 into a denary number using two’s complement.

Convert the denary number 18 into an 8-bit binary number as an unsigned integer.

Explain, in your own words, the difference between an unsigned integer and a two’s complement signed integer.

Calculate the maximum number of states that can be represented by a binary pattern that is 4 bits in length.

Explain how the binary number system is used to represent numerical data in computers.