ROM

The RO in ROM stands for “READ ONLY” but, depending on the type of ROM, you may or may not be able to write to it ROM is non- volatile memory. This means when the power is lost or turned off it does not lose its memory. So it can be used to store data or instructions “FIRMWARE”

RAM

Within the processor box, RAM memory chips provide form of memory that offers the same access time for allocations within it.It is violate memory which means when you want to write to it you can but when it turns off you lose all the data. RAM, like other memory is measured in bytes or, more likely GB (gigabytes).

RAM stands for random access memory

MOTHERBOARDS

The motherboard is the most important component within a PC system. It is a PCB (PRINTED CIRCUIT BOARD) that houses many of the essential parts of the PC and all connections between the PC and peripheral go though it. The motherboard of a typical desktop consists of a large printed circuit board. It holds electronic components and interconnects, as well as physical connectors (sockets, slots, and headers) into which other computer components may be inserted or attached.

CPU (central processing unit)

The processor is a chip housed on the motherboard and is the heard of a computer system as it controls everything. It contains a circuitry system which processes the instructions in the computer programs by interpreting them into actual movements of bits of data within the computer memory.