IGCSE Computer Science 0478: 1.Data Representation: 1.1 Number systems

Candidates should be able to:
1-Understand how and why computers use binary to represent all forms of data
2- (a) Understand the denary, binary and hexadecimal number systems
(b) Convert between
(i) positive denary and positive binary
(ii) positive denary and positive hexadecimal
(iii) positive hexadecimal and positive binary
3- Understand how and why hexadecimal is used as a beneficial method of data representation
4- (a) Add two positive 8-bit binary integers
(b) Understand the concept of overflow and why it occurs in binary addition
5- Perform a logical binary shift on a positive 8-bit binary integer and understand the effect this has on the positive binary integer