(double-error detection) с обнаружением двойных ошибок о контроле ОЗУ Смотри также: ECC, EDC, SEC 3)
Dark-Emitting Diode (that is, a burned-out LED). Compare SED, LER, write-only memory. In the early 1970s both Signetics and Texas instruments released DED spec sheets as AFJs (suggested uses included "as a power-off indicator").