meaning of error correcting memory

1. error correcting memory ECM RAM using some kind of error detection and correction EDAC scheme. The two types of memory errors in RAM especially DRAM are "soft" errors due to radiation-induced bit switching, and "hard" errors due to the unexpected deterioration of a memory chip. Soft errors do not indicate lasting damage to the memory board, but they do corrupt programs or data. Hard errors demand physical repairs. Single bit memory failures are the most common. A hard single bit failure, such as that caused by a completely dead chip can be corrected by EDAC if each chip supplies only one bit of each word. EDAC memory is the most common level of protection for minicomputers and mainframes whereas the cheaper parity protection is more common in microcomputers. [Clearpoint, "The Designers Guide to Add-In Memory", Third Addition].


Related Words

error correcting memory |

Developed & Maintained By Taraprasad.com

Treasure Words