Computer Structure

• What does the ALU do?

  Mathematical or logical work
• What three types of operators does the ALU work with?

  • Comparison operators (<, >, =>, =<, ==, !=)
  • Logical operators (AND, OR, NOT)
  • Arithmetic operators (+, -, *, /)
• What does the control unit do?

  Coordinating the computers activities
• What do registers do?

  Store temporary data
• What are the three areas of the processor?

  • ALU
  • Control Unit
  • Registers
• What are the two types of memory?

  • ROM (Read Only Memory)
  • RAM (Random Access Memory)
• What are the two types of bus?

  • Address bus
  • Data bus
• Address bus facts?

  • Unidirectional
  • from processor -> storage
• Data bus facts?

  • Bidirectional
  • processor <-> storage
• Machine code is a low level language
• High level languages have to be translated by a translator into low level languages to be read by the processor
• What are the two types of translator?

  • Interpreter
  • Compiler
• Interpreter facts?

  • Errors are highlighted
  • Is slower to run
  • Anyone can see your code
• Compiler facts?

  • Debugging is complex
  • Runs quickly
  • Source code is hidden