Based on the provided text, the table can be completed as follows:
| Component (acronym) | Full name / Description | Functions and properties |
|---|---|---|
| hardware | All the components you can physically see. | Physical parts of the computer system. |
| software | All the computer programs and related data that provide instructions. | Instructions for the computer to work properly. |
| CPU | Central Processing Unit | The brains of your computer; performs arithmetical and logical operations, controls the system and coordinates all operations. |
| ALU | Arithmetic Logic Unit | Carries out the instructions of a program to perform arithmetical and logical operations. |
| CU | Control Unit | Controls the system and coordinates all the operations. |
| RAM | Random Access Memory | Volatile memory; loses contents when power is off; main memory where data is stored as long as the machine is on. |
| ROM | Read Only Memory | Non-volatile memory; contains essential and permanent information and software; cannot be modified or only very slowly. |