![](https://psl.eelabs.technion.ac.il/wp-content/uploads/sites/7/2017/06/slide_5-900x600.jpg)
in Flash ,Block Erase operations are costly both in execution time as well as in the chips durability (~10,000 erase cycles and chip will malfunction). using Write Only Memory Coding we can reduce the need for Erase operations , extending the chips durability by sacrificing space.