Pronounced u-art, and short for universal asynchronous receiver-transmitter, the UART is a computer component that handles asynchronous serial communication. Every computer contains a UART to manage the serial ports, and some internal modems have their own UART.
1 Color. 2  Color of a rock depends on the minerals present and on their grain size. 3  Generally, rocks that contain lots of feldspar and quartz are light colored, and rocks that contain lots of pyroxenes, olivines, and amphiboles (ferromagnesium minerals) are dark colored.
1 Such rocks would contain Mg-rich minerals like serpentine, brucite, talc, dolomite, and tremolite. 2  In general, such rocks usually have an ultrabasic protolith, like peridotite, dunite, or pyroxenite. 3  Ferriginous. 4  Rocks that are rich in Fe with little Mg are termed ferriginous.