Information and Communication Technology

The most important piece of hardware in a computer is the Central Processing Unit (CPU). The CPU is the brain of the computer and is responsible for carrying out all of the instructions that are given to it. Without a CPU, the computer would not be able to function. The mouse, keyboard, and monitor are all important pieces of hardware, but they are not as essential as the CPU. The mouse is used to point and click on objects on the screen, the keyboard is used to enter text, and the monitor is used to display the output of the computer. However, all of these devices can be replaced or substituted with other devices. For example, a computer can be controlled by a joystick or a touchscreen instead of a mouse, and a computer can be displayed on a TV or a projector instead of a monitor.