EXAMPLE OF GADGET 

VACUUM KEYBOARD BRUSH CLEANER

KEYBOARD

WEBCAM

TYPES OF COMPUTER

MONITOR

- a screen that displays output from a computer.

FUNCTION

-A monitor is a display unit that is used to show data that has been put in a computer. The data is processed by a video card into images that are displayed on the monitor. There are different types of monitors, some of which include the cathode ray tube and liquid crystal displays

CPU

-A central processing unit (CPU), also referred to as a central processor unit,^[1] is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, and input/output operations of the system. The term has been in use in the computer industry at least since the early 1960s.^[2] The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains much the same.

FUNCTION

-The CPU (central processing unit) mainly performs all the logic required for a computer to function appropriately. As the brain of a PC, the CPU lets you to operate software. The more powerful the CPU has, the more types of functions you will be able to operate on your system.

MOUSE(COMPUTING)

-In computing, a mouse is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons.

The mouse sometimes features other elements, such as "wheels", which allow the user to perform various system-dependent operations, or extra buttons or features that can add more control or dimensional input. The mouse's motion typically translates into the motion of a pointer on a display, which allows for fine control of a graphical user interface.

FUNCTION

-A mouse is a handheld pointing device used to position a cursor on a computer screen. This allows the user to select items stored on a computer and, subsequently, perform actions on those items. 

Computer: Definition

A computer is a machine that can be programmed to manipulate symbols. Its principal characteristics are:

• It responds to a specific set of instructions in a well-defined manner.


• It can execute a prerecorded list of instructions (a program).


• It can quickly store and retrieve large amounts of data.

Therefore computers can perform complex and repetitive procedures quickly, precisely and reliably. Modern computers are electronic and digital. The actual machinery (wires, transistors, and circuits) is called hardware; the instructions and data are called software. All general-purpose computers require the following hardware components:

• Central processing unit (CPU): The heart of the computer, this is the component that actually executes instructions organized in programs ("software") which tell the computer what to do.


• Memory (fast, expensive, short-term memory): Enables a computer to store, at least temporarily, data, programs, and intermediate results.


• Mass storage device (slower, cheaper, long-term memory): Allows a computer to permanently retain large amounts of data and programs between jobs. Common mass storage devices include disk drives and tape drives.


• Input device: Usually a keyboard and mouse, the input device is the conduit through which data and instructions enter a computer.


• Output device: A display screen, printer, or other device that lets you see what the computer has accomplished.

In addition to these components, many others make it possible for the basic components to work together efficiently. For example, every computer requires a bus that transmits data from one part of the computer to another.