A digital image processing algorithm represents the greyscale intensity of a pixel using an 8-bit unsigned binary integer, where 00000000 represents completely black and 11111111 represents completely white.
A specific pixel in a medical scan has its intensity stored as the binary pattern 11011001.
Convert this 8-bit binary pattern into its decimal equivalent to find the pixel's intensity value.
47 exam-style questions on AQA GCSE Computer Science Converting between number bases. Each one has a worked solution and a mark scheme showing where the marks go.