Computer components

Izzy Lawson

Hard Disk Drive (HDD)

A Hard Drive is a disk drive that is used to read from and write to a hard disk. A HDD is the computer's main storage device, that permanently stores all data on the computer. It consists of one or more hard drive platters inside of an air sealed casing.


The monitor displays the computer's user interface and open programs, allowing the user to interact with the computer using the keyboard and mouse. Most modern monitors are made using LCD technology, and they are also known as flat screen displays.


CPU is the abbreviation of central processing unit. The CPU is like the brains of the computer. The CPU is also known as the processor or micro processor. The CPU's job is to execute a sequence of stored instructions, called a program.


RAM stands for random access memory. It is a type of computer memory that can be accessed randomly. RAM is the most common type of memory found in computers and devices. Because information is accessed randomly, the computer can access information much faster than it would if it was only reading the hard drive.


A motherboard is the main printed circuit board (PCB) located at the bottom of the computer case. It allocates power to the CPU, RAM and all other computer hardware components, and allows them to communicate with one another.

Inputs / Outputs

In computing, input/output is the communication between an information processing system (e.g. a computer) and the outside world, like a human or another information processing system. An example of an input device is a keyboard. An example of an output device is a printer. An input device sends information to a computer, and an output device receives information from the computer.

Touch screens

A touch screen is a display that is also an input device. Most modern touch screens detect human touch. Touch screen devices accept input directly through the screen, meaning they do not need external input devices such as a keyboard or mouse.