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Glossary

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Term Description
Baud (Symbol: Bd) An SI unit of measure named after Emile Baudot. Synonymous with Baud Rate. See: Baud Rate
Baud Rate The number of symbols or pulses that are transmitted per second. See: Baud
Baud Rate Generator An internal circuit (on Zilog Z8523x ESCC, Zilog Z16C32 IUSC, etc.) that divides an external oscillator by an integer value to produce a clock that is used to generate or decode a synchronous serial data stream. Abbreviated BRG.
BCD Binary-Coded Decimal - The encoding of decimal numbers as four-bit binary values from 00002 for 0, to 10012 for 9. BCD uses only 10 of the 16 4-bit combinations.
Binary A numbering system that allows for only two states, usually 1 and 0.
Bit The most basic unit of information or data in computing or serial communications. Bit is a contraction of 'binary digit' and is denoted by the numerical digits 0 or 1.
Bit Wise An operation, usually between two bytes or words, in which corresponding bits take part in an operation.
Blocking Diode A diode, also called an isolation diode, that stops, or blocks, current from flowing through a circuit. Typically used in a battery circuit to prevent the reverse biasing of a battery by a more positive power supply.
Boolean Logic A form of mathematics named after George Boole (1815-1864) who devised formal expressions for AND, OR, and INVERT operations.
BRG Baud Rate Generator
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