PMOS— P-channel metal-oxide semiconductor.PMS— Planned Maintenance System.POFA— Programmed Operational Functional Anal-ysis.POST— Power-on self test.PPS— Primary power supply.PREVENTIVE MAINTENANCE— Maintenanceperformed specifically to prevent faults fromoccurring.PRF— Pulse-repetition frequency.PRINTER— An output device that produces adurable record of data in the form of a se-quence of discrete graphic characters belongingto a predetermined character set.PROM— Programmable read-only memory.PRT— Pulse-repetition time.PS— Power supply.PW— Pulse width.QMOS— Quick metal-oxide semiconductor.RAC— Radar azimuth converter.RAN— Random access memory.RC— Resistance-capacitance.RC— Request control.RD— Read data.RDUC— Receive data from unit computer.RECORD— A set of related data or words treated asa uniteRAS— Refresh address strobe.REI— Requester extension interface.RFI— Radio frequency interference.RLL— Run length limited. A fixed disk controllerand data encoding system that increases thedensity of data on the disk.ROCU— Remote operator control unit.ROM— Read-only memory.ROTOR— The rotating member of a synchro thatconsists of one or more coils of wires wound ona laminated core. Depending on the type ofsynchro, the rotor functions in a manner similarto the primary or secondary windings of atransformer.RS-232— Recommended standard 232. ANSI stand-ard serial interface.RS— Recommended standard.RTC— Real-time clock.RTS— Request to send.RZ— Return-to-zero recording method.S/D— Synchro-to-digital.SCSI— Small computer systems interface.SDC— Signal data converter.SEEK— To selectively position the access mechan-ism of a direct access device.SEM— Standard electronic module.SEM CHASSIS— Standard electronic modulechassis.SERIAL— An occurrence of events, such as pulses,in a timed sequence rather than simultaneously.SERIAL PRINTER— Synonym for character printer;prints one character at a time.SERVO SYSTEM— An automatic feedback controlsystem that compares a required condition withan actual condition and uses the difference toadjust a control device to achieve the desiredcondition.SIMMs— Single inline memory modules.AI-8
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
