1.1.2 Types of Processor(SLR02)

• RISC: computers or computing based on a form of microprocessor designed to perform a limited set of operations extremely quickly
• RISC: Reduced Instruction Set Computer
• RISC: has fewer registers than CISC processors
• RISC: uses simple instructions, which are executed very quickly by the processor.
• CISC computers have larger instruction sets and can perform more complex tasks than RISC computers. Instructions are built into the hardware
• RISC VS CISC

  RISC

  • Compiler has more work to do converting to machine code
  • more complex code so more RAM is needed to store code As the Files Would Need to be Larger
  • Pipelining Possible as each instruction takes one clock cycle

  CISC

  • Compiler has less work to do
  • less Ram
  • Many specialised instructions are made and not all are utilised
• Multi-Core

  • Multi-core CPUs have multiple independent cores that can complete instructions separately which results in higher performance.
  • Parallel systems accomplish a similar task however instead of requiring multiple cores they can complete tasks with a single core, by using threading.
  • Generally, multi-core systems perform better in larger projects than parallel systems.
• GPU

  • Lots OF Independent processors which work in parallel.
  • Efficient at completing repetitive tasks
  • i.e. Image Processing, Machine Learning
  • co-processor, Used to Support activities of the CPU