Posts
BIOS - Basic Input Output System is a software that consists all the code required to control the disk drives, keyboard, mouse, display screen, serial ports and several other PC components. Act as a bridge between hardware & OS while booting. Like a nervous system in our body. BIOS monitors hardware changes (Hardware Independence) It is placed in motherboard’s EEPROM (Electrically Erasable Programmable Read Only Memory) chip. Cards like sound cards, Graphic cards has inbuilt BIOS chip called ROM BIOS chip. Booting Process When the CPU is switched ON, BIOS starts working. First it shows chipset type, processor name, size of memory. After that, BIOS reads details in CMOS (Complementary Metal Oxide Semiconductor chip). CMOS is a RAM which is powered by small button battery to keep it ON when PC is OFF. Information about time, date, boot device etc. will be there in CMOS. This information can be changed by entering into the setup menu while booting. Next, BIOS ...
Technology simplified. This blog explains Computers and Networking basics in simple words which transfers my knowledge to others and to review myself the explained concepts in future. Our vision is to help our readers to understand the basic concepts of PC and networking. This little effort may help CCENT, CCNA and A+ certifications study group.