Glossary
Prefixes
| Symbol | Prefix | Value |
|---|---|---|
| p | pico | 10 -12 |
| n | nano | 10 -9 |
| µ | micro | 10 -6 |
| m | milli | 10 -3 |
| k | kilo | 10 3 |
| M | mega | 10 6 |
| G | giga | 10 9 |
| T | tera | 10 12 |
Symbols
| ° | degrees |
 | ohms |
| % | percent |
A | |
| A | amperes |
| ANSI | American National Standards Institute |
B | |
| b | bits |
| B | bytes |
| baud | bits per second |
| bps | bits per second |
C | |
| C | Celsius |
| COM | Computer Output Microform; used in reference to a communication port |
| CTS | clear to send |
D | |
| DB-xx | subminiature D connector, where xx is the number of pins |
| DCD | data carrier detect |
| DCE | data communications equipment or data circuit-terminating equipment |
| DLL | dynamic link library |
| DMA | direct memory access |
| DSR | data set ready |
| DTE | data terminal equipment |
| DTR | data terminal ready—the overscore denotes that the signal is active low |
| duplex | the means of bandwidth usage in a serial system |
E | |
| EIA | Electronic Industries Association |
| EMI | electromagnetic interference |
| ENET | Ethernet |
F | |
| FCC | Federal Communications Commission |
| FIFO | First-In-First-Out |
| ft | feet |
G | |
| G | ground |
H | |
| HSI | handshake input |
| HSO | handshake output |
| Hz | Hertz |
I | |
| I/O | input/output |
| IEEE | Institute of Electrical and Electronic Engineers |
| in. | inches |
| IRQ | interrupt request |
| ISA | Industry Standard Architecture |
K | |
| Kbaud | kilobits per second |
L | |
| LED | light-emitting diode |
M | |
| m | meters |
| MB | megabyte |
P | |
| PC | personal computer |
| PCI | Peripheral Components Interconnect |
R | |
| RAM | random-access memory |
| RI | ring indicator |
| RTS | request to send |
| RX | receive |
| RXD | receive data—the overscore denotes that the signal is active low |
S | |
| s | seconds |
| SCSI | Small Computer Systems Interface |
T | |
| TX | transmit |
| TXD | transmit data—the overscore denotes that the signal is active low |
| TXRDY | transmit ready—the overscore denotes that the signal is active low |
U | |
| UART | Universal Asynchronous Receiver/Transmitter |
V | |
| V | volts |
| VDC | volts direct current |
| VXI | VME eXtensions for Instrumentation |