Answer Posted / md. samiul islam

RAM - RAm means Random Access Memoty, which is also called
the primary or main memory. Data is temporarily stored in
this memory.It is a volatile memory.

Hard Disk: It is one kind of secondary storage device. All
kinds of data are stored in different drives of the Hard
disk.

Processor: It can be said the central nervous system of the
computer. It can also be called CPU (Central Processing
Unit) which mainly consists of two units - ALU ( Arithmatic
and Logical Unit) and CU ( Control Unit). All kinds of
Arithmatic and logical operation are coordinated by this
section of a computer system.

Motherboard: The motherboard is a circuit board on which
all the discrete components like processor, HDD, FDD, Sound
card or VGA card etc are attached. Now a days,many
components are made built-in to the motherboard.

BIOS: Basic Input Output Setup, stored in ROM in a PC

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