Whats inside a computer?

By Amy Eustace


The CPU is the part of a computer system that is commonly referred to as the "brains" of a computer. The CPU is also known as the processor or microprocessor. The CPU is responsible for executing a sequence of stored instructions called a program.

Types and sizes of memory-RAM & ROM

ROM means Read Only Memory and RAM means Random Access Memory.

ROM is a memory that cannot be changed by a user or a programmer. Rom retains its memory even after the computer is turned off.

Ram is a quick but temporary type of memory in which programs, applications and data are removed. However if computer loses power, all data stored in its Ram are lost.

Hard Drive

A Hard Drive is a data storage devise. A typical hard drive is only slightly larger than your hand, yet can hold over 100 GB of data. These disks spin extremely fast so that data can be accessed immediately from anywhere on the drive.

Mother Board

A motherboard is the main circuit board inside a computer that connects the different parts of a computer together. It has sockets for the CPU, RAM and expansion cards.It links all the individual parts of a computer together, and in doing so, allows the CPU (brain) to access and control these separate parts.

CD drive

A CD drive is a device a computer uses to read data encoded digitally on a compact disc. A CD drive may be installed inside a computer's chassis with an opening for disc tray access or a peripheral connected to one of the computer's ports.