I am studying psychology and have always been awful at maths (I think it's because I don't have much working memory), I am coming at this as a complete beginner. It is relevant to the Information Processing model of psychology. _____ The book says: Imagine you throw a coin once.. once it lands you have 1 bit of information. There are two (2) possible results [log2(2)] = 1 bit If you throw a coin twice you have two bits of info, there are four possible results (xx,++,+x,x+) (I don't know why they mention the possible results, is that relevant?) [log2(4)] = 2 bits Am I right in thinking the 4 in that equation corresponds to the four possible results? The examples in the book end there, and I have been trying to expand it to check that I understand. [log2(8)] = how many bits? I guess that question means "How many binary digits do you need to represent 8?" There are 256 possible results.. is that relevant? [log2(8)] =3 bits if we were talking about coin tosses, and 4 bits on a computer because for some reason they always add one. Am I right? In a computer zero= 0 one = 1 two = 10 three = 11 four = 100 Why isn't 01 four? Here I will guess five = 101 six = 110 seven =111 eight = 1000 log base 2 of 8 is 3 so why do I need 8 digits to represent 8? Why can't I use 011? A friend suggested that the computer would see 01 as being the same as 10. I am imagining a cent and a euro, they aren't the same coin so a tails with one is not the same as a tails with the other, they aren't interchangeable.. but I would have thought the same went for computer transistors? That is what 1 and 0 represent for computers, right? on and off switches? _____ Thanks for any help you can give. I have googled it, but all the tutorials I find impart all the information relevant for IT then very quickly go into more advanced things like bytes etc. and don't deal in detail with the basic concept.