Root access is even needed if you want to install trivial things like certain custom fonts, and can unlock new features in certain apps and launchers. The actual method required to root your phone will vary from model to model, so we canât possibly cover them all.
Interpret 11011011 as a two's complement binary number, and give its decimal equivalent. First, note that the number is negative, since it starts with a 1. Change the sign to get the magnitude of the number. Convert the magnitude to decimal: 001001012 = 2516 = 2Ã16 + 5 = 3710.
For very small numbers, we can more or less doit by eye. Say for the number twenty one, we can realise that it is more than 16 = 2 4 and not asbig as 32 = 2 5. In fact21 = 16 + 5 = 16 + 4 + 1 = 2 4 + 2 2 + 1 = (10101) 2 Or we can start at the other end and realise that since 21 is odd its binary digits must end in1. 21=2 = 10+ remainder 1.