Write a definition of concepts: A computer memory is a ROM (Read-Only Memory)- RAM (Random Access Memory)- Cache Memory- HDD (Hard Disk Drive)- SSD (Solid State Drive)- Flash Memory- The principle of memory homogeneity - Principle of targeting- The principle of program control- DDR SDRAM- DDR5 SDRAM- DDR memory frequency- ECC Memory Support- Multichannel Memory Architecture- XMP - Timings