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.
The battery can go flat, the data in the CMOS can be lost by a static electric discharge to the keyboard, or the data can be lost when a new card is plugged into the Bus, or other inside modifications are performed. The information stored in CMOS is required by your computer's Basic Input/Output System, or BIOS. The system BIOS is stored in a 64K by 8 bit wide ROM on the System Board. If the System BIOS was actually accessed from this ROM during normal operation the PC's speed would be greatly reduced.