The soft error rate is the frequency of errors caused by alpha particles, cosmic radiation) and other factors which do not permanently damage the memory system.
Soft Error Rate When a high energy charged particle like alpha particle passes into depletion layer of SRAM cell, it usually excites a lot of bound electrons and generates a bunch of electron-hole pairs which may cause switch the bit state of memory cell which is called soft error.
Smooth endoplasmic reticulum.
To be; Soy I''m.
Substitution Error Rate or the rate of occurrence of incorrect characters from an automatic identification system.