ROM
ROM also called CMOS (Complementary Metal Oxide Semiconductor)chip, is an internal memory of a computer which is on a motherboard. it contains BIOS (Basic Input Output System) program which is a bridge between motherboard and operating system. the basic program store in ROM is called firmware. the motherboard manufacturer store the firmware in ROM at the time of manufacturing mother board. the firm ware store in ROM can only be read by the CPU but can't be erased or rewritten. so, it is also called Read Only Memory. except the BIOS program, a computer need information of devices like keyboard ,mouse ,monitor, hard disk ,CD drive, ram etc. each and every time when it is turned on. so, these essential or necessary information are also stored in ROM chip later by the user themselves. these information are not erased when you turn off a computer.
when a computer is turned on, the BIOS program controls the computer.
ROM also called CMOS (Complementary Metal Oxide Semiconductor)chip, is an internal memory of a computer which is on a motherboard. it contains BIOS (Basic Input Output System) program which is a bridge between motherboard and operating system. the basic program store in ROM is called firmware. the motherboard manufacturer store the firmware in ROM at the time of manufacturing mother board. the firm ware store in ROM can only be read by the CPU but can't be erased or rewritten. so, it is also called Read Only Memory. except the BIOS program, a computer need information of devices like keyboard ,mouse ,monitor, hard disk ,CD drive, ram etc. each and every time when it is turned on. so, these essential or necessary information are also stored in ROM chip later by the user themselves. these information are not erased when you turn off a computer.
when a computer is turned on, the BIOS program controls the computer.
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