List Of Output Devices

Display Monitor

The display is how you see the output of the computer. The display is the external monitor on a desktop or the attached monitor on a laptop. Although displays used to be made with cathode-ray tubes (CRT), flat-screen panels have replaced that technology. Flat-screen liquid-crystal display (LCD) monitors are lighter and have better display quality than older CRT monitors.

DVD or CD-ROM

A DVD or CD-ROM is a media device on which the user can write data and information. DVDs have replaced CD-ROMs since they hold more information than legacy discs. DVDs are normally used as storage backups to save documents and applications in case of a hard drive failure. They are also used to create installation discs for software development.

Speaker

Speakers are one of the most common output devices used with computer systems. Some speakers are designed to work specifically with computers, while others can be hooked up to any type of sound system. 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. The speakers receive audio input from a device such as a computer or an audio receiver. This input may be either in analog or digital form. Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital speakers must first convert the digital input to an analog signal, then generate the sound waves.
The sound produced by speakers is defined by frequency and amplitude. The frequency determines how high or low the pitch of the sound is. For example, a soprano singer's voice produces high frequency sound waves, while a bass guitar or kick drum generates sounds in the low frequency range. A speaker system's ability to accurately reproduce sound frequencies is a good indicator of how clear the audio will be. Many speakers include multiple speaker cones for different frequency ranges, which helps produce more accurate sounds for each range. Two-way speakers typically have a tweeter and a mid-range speaker, while three-way speakers have a tweeter, mid-range speaker, and subwoofer.

Amplitude, or loudness, is determined by the change in air pressure created by the speakers' sound waves. Therefore, when you crank up your speakers, you are actually increasing the air pressure of the sound waves they produce. Since the signal produced by some audio sources is not very high (like a computer's sound card), it may need to be amplified by the speakers. Therefore, most external computer speakers are amplified, meaning they use electricity to amplify the signal. Speakers that can amplify the sound input are often called active speakers. You can usually tell if a speaker is active if it has a volume control or can be plugged into an electrical outlet. Speakers that don't have any internal amplification are called passive speakers. Since these speakers don't amplify the audio signal, they require a high level of audio input, which may be produced by an audio amplifier.
Speakers typically come in pairs, which allows them to produce stereo sound. This means the left and right speakers transmit audio on two completely separate channels. By using two speakers, music sounds much more natural since our ears are used to hearing sounds from the left and right at the same time. Surround systems may include four to seven speakers (plus a subwoofer), which creates an even more realistic experience.

Headphones

 

Headphones are a pair of small loudspeakers which are designed to be held in place close to a user's ears. Headphones have wires which allow them to be connected to a signal source such as an audio amplifier, radio, CD player, or portable media player. They are also known as stereophones or, colloquially, cans. The in-ear versions are known as earphones or earbuds. In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone. 

Projectors (LED,LCD)

In the past projectors have used halogen lamps which lasted just a few hours but were cheap to buy.
Today most conventional digital projectors use metal halide lamps that can last between 1000 to 6000 hours. a new type of projectors now use LED or a combination of LED and laser (known as hybrid light source) as a light source. This allows for much lower cost of ownership and far longer life span without the need for replacement lamps.

Here you will find detailed reviews of Home Theater Projectors, Business Projectors, Education Projectors (for K-12 and Higher Education), as well as Pico Projectors and Pocket Projectors. Our mission is to not only identify the best projectors, but to provide enough information for you to choose the projector that is right for you.For the home, we review both home entertainment and the more serious home theater projectors, ranging from standard HD, to 1080p, 1080p with pixel shifting, 4k UHD to the high-end 4K projectors. We also review projector screens and accessories and offer a large database of projector specifications, data sheets, and brochures for you to compare, helping to narrow down your search for the perfect projector.

LED Display

An LED display, or light emitting diode display, is a flat panel display that uses light emitting diodes as the video display. An LED display panel can be either a small display or part of a larger display. LED diodes are used in order to make up an LED display. LED displays are also used in billboards and store signs. An LED panel consists of several LEDs, whereas an LED display consists of several LED panels. LEDs used in order to make up LED displays offer several advantages in comparison to other light emitting sources. A light emitting diode is made up of a semiconductor chip which is surrounded by a transparent plastic case. The plastic case allows the light to pass through it. The emission of different colors including ultraviolet and infrared light depends on the semiconductor material which is used in the diode.

Types of LED Displays

There are many different kinds of LED Displays. At Future Electronics we stock many of the most common types categorized by display type, digit/alpha/matrix size, color, common pin value, packaging type and number of digits/alpha/matrix/bars. The parametric filters on our website can help refine your search results depending on the required specifications.
The most common types for display type are light bar, seven segment and dot matrix. We also carry many other different types of display. Digit/Alpha/Matrix Size can range from 0.03 in to 0.40 in, with the most common sizes being 0.2 in, 0.3 in and 0.4 in.

 

 



 
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