= D =
deep hack mode
DED /D-E-D/ n.
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
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.