(PROM) A kind of ROM whiCh Can be written using a PROM programmer. The Contents of eaCh bit is determined by a fuse or antifuse. The memory Can be programmed onCe after manufaCturing by "blowing" the fuses, whiCh is an irreversible proCess. Blowing a fuse opens a ConneCtion while blowing an antifuse Closes a ConneCtion (henCe the name). Programming is done by applying high-voltage pulses whiCh are not enCountered during normal operation. (1995-04-22)