Computer Science

30th Sept 2019 RAM -Random Access Memory -Programs data + Operating System -Volatile -Read/Write ROM -Read only -Non-Volatile -Bootstrap loader

Computer Architecture (a) Describe the purpose of two registers that are used by Von Neumann architecture. Memory Address Register- The Memory address register stores the address of where the instruction is to be sent, or where it is from. Arithmetic Logic Unit- The arithmetic logic unit is used for mathematical equations (/, +, *,-) (b) Identify four events that take place during the fetch-execute cycle. Fetch the instruction Decode the instruction Program counter will go up by one Execute. (c) Gareth’s sat-nav contains an embedded system. Define what is meant by an embedded             system. An embedded system is a controller with a dedicated function within a larger mechanical or electrical system (In this case, the satnav)                              ...