Electrical Engineering Abbreviations
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
Ra to Rh, Ri to Rz
| RI | - | routing indicator |
| RIMM | - | Rambus DIMM [Memory Module Manufacturers] |
| RISC | - | reduced instruction set computer |
| RJ | - | Registered Jack [Telcom Connectors] |
| RJE | - | remote job entry |
| RLDRAM | - | Reduced Latency DRAM [DRAM IC Manufacturers] |
| RMM | - | Removable Memory Module |
| rms | - | root-mean-square [deviation] |
| RO | - | read only, receive only |
| ROA | - | recognized operating agency |
| ROC | - | required operational capability |
| RoHS | - | Restriction of Hazardous Substances [RoHS Description] |
| ROM | - | read-only memory [ROM IC Manufacturers] |
| ROSA | - | Receiver Optical Sub-Assembly |
| ROSE | - | remote operations service element protocol |
| RPC | - | Remote Power Controller |
| rpm | - | revolutions per minute |
| RPM | - | rate per minute |
| RPOA | - | recognized private operating agency |
| rps | - | revolutions per second |
| RPU | - | Reconfigurable Processing Unit |
| RQ | - | repeat-request |
| RR | - | repetition rate |
| RRH | - | Remote Radio Head |
| RS | - | Recommended Standard, Reed-Solomon |
| RSDS | - | Reduced-Swing Differential-Signaling |
| RSL | - | received signal level |
| rss | - | root-sum-square |
| RT | - | Real Time |
| RTA | - | remote trunk arrangement |
| RTC | - | Real Time Clock [RTC Manufacturers] |
| RTD | - | Resistance Temperature Detector [RTD Manufacturers] |
| RTL | - | Resistor Transistor Logic |
| RTM | - | Rear Transition Module |
| RTOS | - | Real Time Operating System [Software Vendors] |
| RTS | - | request to send |
| RTU | - | remote terminal unit |
| RTX | - | request to transmit |
| RU | - | Rack Unit [Equipment Rack Manufacturers] |
| RVA | - | reactive volt-ampere |
| RVWG | - | Reliability and Vulnerability Working Group |
| RWI | - | radio and wire integration |
| RWM | - | Read-write Memory |
| RX | - | receive, receiver |
| RXD | - | receive data |
| RZ | - | return-to-zero [Encoding Definitions] |
