Definition of trim for English Language Learners. : 1  to cut (something) off something else : to remove (something) by cutting. : 2  to make (something) neat by cutting it. : 3  to make the size, amount, or extent of (something) smaller.
Check with your system vendor for the appropriate keystrokes or to see if you need to run a program from MS-DOS or Windows to configure your system. Because the settings you make in the BIOS setup program are stored in the nonvolatile RAM of the CMOS chip, the settings are often called CMOS settings. In the following section, we will review the typical setup process, looking at each screen of a typical Pentium-class system.
This information is stored in a battery backed-up RAM called the CMOS. The CMOS memory is a 64 or 128 bytes of RAM that is part of the system clock chip or one of the chipset chips. The name came form the material the RAM was made out of, Complementary Metal Oxide Semiconductor.