COM1


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Related to COM1: LPT1

COM1

In a PC, the name assigned to the first serial port. The second is COM2, etc. PCs are typically designed to support up to four serial ports. On earlier PCs, two external serial ports were provided to connect a mouse and modem. On newer PCs, there is often only one external serial port as mice use a separate PS/2 port, and modems are generally built in and use an internal serial port. The term originated before the days of the mouse, when the serial port was primarily used for modem COM-munications. Contrast with LPT1.
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Table 1 Factor Loadings for the SDS Corrected Alpha Factor Item-Total If Item Variable Item Wording Loading Correlation Deleted COM1 I am committed to seeing that our organizational strategy is effectively implemented .
and one USART is connects RS485 devices (over COM1 connector) with our controller through RS485 interface line adapter.
5) The I/O configuration offers flexible design, main combination with 2x RS232/422/485 ports COM1, 2, 1x VGA port, 2x USB 1.
Other features include two USB ports, four Serial ports (three RS-232, COM1, 2, 4; COM3 configurable as RS-422/485/232), one Parallel port (one bi-directional with all IEEE 1284 protocols supported with BIOS selectable IRQs and addressing), and support for two floppy disk drives (360 KB to 1.
25-micron COM1 complementary metal oxide semiconductor process technology, which tends to lower chip power consumption compared with wider process technologies.