P1 explain the function of computer hardware components

This is the processor for windows

This is the processor for Apple

This is the processor for linux

This is the motherboard which all the components go on to.
The motherboard is the most important component within a PC system. It is a PCB that houses many of the essential parts of the PC and all connections between the PC and peripheral go through it.

This is the BIOS which is the ROM BIOS.
The BIOS is a collection of software utilities that forms part of the operating system. It is usually on a ROM chip that comes with the computer, called the ROM BIOS.
Which stands for Basic Input/Output System

This is the PSU which supplies the power to the computer
Example of controllers are SATA, IDE, EIDE, master, slave
SATA stands for serial advanced technology attachment. This is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives.
IDE stands for integrated drive electronics. It refers to a standard electronic interface between a computer motherboard’s data paths (or buses) and the computer’s disk storage devices, based on the IBM PC ISA (industry standard architecture) 16-bit bus standard.
EIDE stands for enhanced integrated drive electronics. while EIDE supported a rate of up to 16.6 MBps. However, some sources list the transfer speed at around four times as fast on average.
Master is a model of communication for hardware devices where one device has a unidirectional control over one or more devices.
Slave is a model of communication for hardware devices where one device has a unidirectional control over one or more devices.

This the DVD drive which you insert the DVD'S and CD'S into.

This is the DVD drive
Specialised cards
Expansion slots allow the life of a computer to be extended, since new technology can be added as it becomes available. They allow you to add specialised cards to your PC, e.g. for a modem, a sound card and/or an NIC