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Appendix I- Glossary of Terms and Acronyms-Cont. - 14100_358
Appendix I- Glossary of Terms and Acronyms-Cont. - 14100_360

Fire Controlman Volume 03-Digital Data Systems
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MTU— Magnetic  tape  unit. N-FET—  N-channel  field-effect  transistor. NDRO MEMORY— Nondestructive  readout  mem- ory. NEETS— Navy Electricity and Electronics Training Series. NIPS— Naval Intelligence Processing System. NLQ— Near  letter  quality. NMOS-N— channel  metal-oxide  semiconductor. NONIMPACT  PRINTER—  A  printing  device  that does not mechanically impact the paper. NONVOLATILE STORAGE— A storage device whose   contents   are   not   lost   when   power   is removed. NRZ— Non-return-to-zero  recording  method. NRZI— Non-return-to-zero  indiscrete. NTDS— Naval Tactical Data System. NuBus—  Simple  32-bit  backplane  bus  (standard internal data bus). O— Operand. OA— Output  acknowledge. OD— Output  data. ODA— Output  data  acknowledge. ODR— Output  data  request. OFFLINE— Pertaining to the operation of a func- tional unit when not under the direct control of a computer. ONLINE—  Pertaining to the operation of a funt- ional  unit  when  under  the  direct  control  of  a computer. OP CODE—  Operation  code. OP PROGRAM— Operational  program. OTCIXS— Officer-in-Tactical-Command  Information Exchange  System. OUTPUT DATA— Data being delivered or to be delivered  from  a  device  or  from  a  computer program. OUTPUT CHANNEL— A channel for conveying information from a device or logic element. P/TP— Power/temperature panel. PAGE PRINTER— A device that prints a whole page as an entity. PARITY CHECK—  A check that tests whether the number  of  binary  ONEs  in  an  array  of  binary digits is odd or even. PBI— Pushbutton/indicator. PC—  (1)  Personal  computer/microcomputer;  (2) Printed circuit. PCB— Printed  circuit  board. PE— Phase encoding. PEAK  VOLTAGE—  The maximum value present in a  varying  or  alternating  voltage.  This  value  may be positive or negative. PEFT— Peripheral equipment fictional test. PERIPHERAL DEVICE— With respect to a par- ticular processing unit, any equipment that can communicate  directly  with  that  unit.  Synony- mous with peripheral unit. PGA— Pin grid array. PHOTODIODE— A diode that produces current by absorbing  light. PI— Power  interrupt. PITS— Depressions in a CD-ROM that causes the laser beam to defuse. PLCC— Plastic  leadless  chip  carrier. AI-7






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