Speakers are one of the most common output devices used with computer systems. ... Regardless of their design, the purpose of speakers is to produce audio output that can be heard by the listener. Speakers are transducers that convert electromagnetic waves into sound waves

A computer mouse is a handheld hardware input device that controls a cursor in a GUI and can move and select text, icons, files, and folders. For desktop computers, the mouse is placed on a flat surface such as a mouse pad or a desk and is placed in front of your computer.

A read-only DVD disc used to permanently store data files. DVD-ROM discs are widely used to distribute large software applications that exceed the capacity of a CD-ROM disc. DVD-ROM discs are read in DVD-ROM and DVD-RAM drives in computers, but typically not in DVD drives connected to TVs and home theater systems.

A power supply is an electrical device that supplies electric power to an electrical load. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are separate standalone pieces of equipment, while others are built into the load appliances that they power.

A peripheral device that reads and writes a memory card made of flash memory chips. First available as external devices for one type of card, readers were subsequently built into the computer to handle all popular formats.

another term for motherboard
‘The memory subsystems of the tested mainboards were at their defaults.’

A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry within a computer that executes instructions that make up a computer program.

A computer fan is any fan inside, or attached to, a computer case used for active cooling. Fans are used to draw cooler air into the case from the outside, expel warm air from inside and move air across a heat sink to cool a particular component.

Random access memory (RAM) is a computer's short-term memory. None of your programs, files, or Netflix streams would work without RAM, which is your computer's working space.

A graphics card (display adapter) that provides VGA resolution. Most PC graphics cards provide base level VGA resolutions even if they do not provide the actual VGA connector. See VGA.

a device which can be slotted into a computer to allow the use of audio components for multimedia applications.

Hard disk, Magnetic storage medium for a microcomputer. Hard disks are flat, circular plates made of aluminum or glass and coated with a magnetic material. Hard disks for personal computers can store up to several gigabytes (billions of bytes) of information. Data are stored on their surfaces in concentric tracks.

Speakers are popular output devices used with computer systems. They receive audio input from the computer's sound card and produce audio output in the form of sound waves. Most computer speakers are active speakers, meaning they have an internal amplifier which allows you to increase the volume, or amplitude, of the sound. Speakers usually come in pairs, which allows them to produce stereo sound from two separate audio channels.

A computer mouse is an input device that is used with a computer. Moving a mouse along a flat surface can move the cursor to different items on the screen. Items can be moved or selected by pressing the mouse buttons (called clicking).

A Central Processing Unit (CPU) is the main microchip in a computer, while a CPU fan is the dedicated fan that helps keep the processor cool. Processors generate heat from internal electrical energy. The more demand placed on a CPU, the harder it works, and the warmer it gets. If the CPU gets too warm it can make errors and eventually ‘melt’ becoming completely inoperable. A CPU fan works in conjunction with a heat sink to prevent this.*

Computer random access memory (RAM) is one of the most important components in determining your system's performance. RAM gives applications a place to store and access data on a short-term basis. It stores the information your computer is actively using so that it can be accessed quickly.

VGA Card will be needed for activities such as drawing a graphic design or to play games.

The sound card translates audio from digital code to the sound waves as needed. ... However, sound cards also have another very important function. They have to do the same thing in reverse. If your computer has a mic (and nearly all do these days), then it too is routed through the sound card.

A hard disk, also known to be the hard drive is the most important data storage hardware device in all computers. This non-volatile memory device stores and retrieves data on a computer permanently. As Microsoft Windows assign the ‘C’ letter to the primary partition, users refer to the hard drive as “C Drive”.