Hardware

Hardware

1. The CPU

   • control unit (CU)
     • the CU also called the controller
   • ALU
   • immediate access store or registers
     • registers are also called internal memory or immediate access stores.a register is a small amount of fast temporary memory within the processor where the ALU or the CU can store and change the values needed to execute instructions.

2. Input devices

3. Output devices

4. Storage devices

   • Secondary storage is non-volatile disk space, and is sometimes called auxiliary memory or secondary memory
     • Magnetic
     • Solid state
     • Tape
     • Optical
       • They are a useful lightweight media for transporting data and programs.
       • Disadvantages
       • CD, DVD and Blu-ray

5. Devices for specific needs

6. Binary Logic

7. Memory

   • ROM
   • RAM