CST8174_Lecture_5_CMOS_and_POST

CST8174_Lecture_5_CMOS_and_POST - Algonquin College CST8174...

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Algonquin College CST8174 CST8174 Computer Technology Basics CMOS
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Friday, May 8, 2009 5 - 2 Algonquin College CST8174 CMOS Stands for Complementary Metal-Oxide Semiconductor Does not store any programs Only stores the data about the hardware that the BIOS needs to communicate properly The CMOS chip also stores the system date and time
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Friday, May 8, 2009 5 - 3 Algonquin College CST8174 CMOS Setup Program Almost every PC comes with a program built into the system ROM called the CMOS setup program This program allows you to indicate the type of hardware you have installed You access the CMOS setup program during the boot phase You usually will press DEL or F2 depending on the BIOS manufacturer
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Friday, May 8, 2009 5 - 4 Algonquin College CST8174 CMOS Setup Program Every CMOS setup program is different, although they all report basically the same thing Standard Features Change floppy drive and hard drive settings Update system date and time Advanced Features Modify advanced settings for the system Allows the enabling/disabling of features
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Friday, May 8, 2009 5 - 5 Algonquin College CST8174 CMOS Setup Program Advanced Chipset Features Deals with extremely low-level chipset functions Should not be changed unless done so on the advice of a expert technician Integrated Peripherals Used to configure, enable, or disable onboard ports such as serial and parallel ports
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Friday, May 8, 2009 5 - 6 Algonquin College CST8174 CMOS Setup Program Power Management Setup Allows the modification of power management software Can work in conjunction with Windows to know how and when to change device states conserve power PnP/PCI Configurations Most commonly used to reserve resources called interrupt request (IRQs) to prevent the system from using it
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Friday, May 8, 2009 5 - 7 Algonquin College CST8174 CMOS Setup Program The CMOS program can be password protected Forces the user to enter a password before the setup program can be accessed Used widely in schools to prevent students from changing settings Passwords can also be used to prevent unauthorized users from booting the computer
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Friday, May 8, 2009 5 - 8 Algonquin College CST8174 CMOS Setup Program Sometimes the CMOS will lose the information stored on it preventing the
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CST8174_Lecture_5_CMOS_and_POST - Algonquin College CST8174...

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