CPU RAM IDE
Optical drive,hard drive USB
northbridge and southbridge
pres a key and keyboard
Basic input/output services: support program
Program dedicated to enabling the CPU to communicate with devices.
chip stores program nonvolatile, read only.
FLASH ROM:update and change the and change the contents
Programs stored on ROM
System BIOS Support
suport all the hadware that never change like keyboard
hardware that can change like RAM and harddrives.
see the book
complementary metal oxide semiconductor store data not programs, also acts as clock to keep the current data and time.update CMOS
CMOS setup program or the system setup utility
enables you to acces and modify CMOS data.
Other Security options
1-Chassis Intrusion Detection/notification
Someone open the case CMOS logs
is the first line of defense for protecting hard disks from unwanted access when a system is lost or stolen.
If PC is stolen you can track its location, install a key logger or remotely shut down your computer.
4-Trusted Plataform Module
Secure storage of associated information
5-Exiting and saving settings
Option ROM and Device Drivers
add programming other than BIOs bring your own BIOS 2 types.
bring your own BIOs, hard to upgrade
Contains all of the commands necesary to talk to whatever it was writen to support.
-Registry: stores everything you want to know about your system use device manager.
power on self test. check out the system
POST information: beep codes and text messages.
1- The beep Codes
one for missing videos, one beep 3 short beeps.
bad or missing RAM single beep that repeats.
2- Text Errors
identify which piece of hardware is causing the trouble.
The boot process
CPU , memory
Care and Feeding of BIOS and CMOS
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