Output Device (Soft copy output)

Output Device

Anything that leaves a computer is considered an output. A meaningful piece of information can be output, and it can do so in a variety of ways, including as binary integers, characters, images, sounds, and printed pages. Through the output devices, the computer speaks with the user. The output device's job is to display processed data to the user. It gets data from the CPU and gives it to the user in the format they want. Typically, there are two ways to produce the output: either on a display device, such as a screen, or on paper. Softcopy output is that which appears on a computer screen and is electronic, whereas hardcopy output is that which appears on paper and is not electronic.

Generally output is of two types:

• Soft copy output
• Hardcopy output

Softcopy Output:

The digital document file without printing is a softcopy output. It can be seen on the screen using a variety of tools, including word processing and excel. The soft copy output devices include a multimedia projector, speaker, monitor, and headphones. Several of the frequently used softcopy output tools include:

Monitor:

The term "monitor" also refers to the display screen. While display screen might refer to merely the screen, the term monitor typically refers to the entire box. The most popular softcopy output device is a monitor. When using personal computers, there are two different sorts of monitors.

• CRT Monitors
  • The vacuum tube that houses an electron gun and fluorescent screen is the Cathode Ray Tube (CRT). The electron beam on the fluorescent screen is accelerated and deflected using a variety of internal and external techniques, creating an image that is visible as light coming from the fluorescent screen. A CRT is a glass tube that has been partially evacuated and is filled with an inert gas at very low pressure. An electron beam is moved back and forth across the screen's back to make it work. The active areas of the screen are illuminated each time the beam passes over them because it activates phosphor dots inside the glass tube.By drawing many such lines from the top to the bottom of the screen, it creates an entire screen of images.
  • There is an electron cannon located close to the CRT monitor's back. The gun fires an electron beam through a magnetic coil that is directed at the monitor's front. When an electron beam strikes phosphors, a chemical that glows, they are coated on the back of the monitor screen. The phosphor coating of the screen is organized into grids of dots known as picture elements or pixels.
  • The majority of applications still use CRT monitors, which have been used with desktop computers for a very long time. They are heavy and expensive, take up a lot of work space, and are challenging to move because of their weight. Because of this drawback, many people are increasingly switching to flat-panel monitors. It consumes a lot of power.
• Flat Panel Monitor:
  • Portable computers have long used flat panel monitors. However, during the past few years, desktop computers have been using flat panel monitors more and more. There are numerous varieties of flat panel displays. The Liquid Crystal Display (LCD) monitor is the most popular. The LCD technology that is utilized in calculators and digital screens is the same. It uses a unique liquid crystal that is transparent but turns opaque when electrically charged to produce images. Light is not directly emitted by liquid crystals. Digital watches and calculators both use LCD technology. With the use of a unique liquid crystal, the LCD display generates images that are ordinarily transparent but turn opaque when electrically charged. A small, flat display device made up of a number of color or monochrome pixels arranged in front of a light source or reflector is an electro-optical amplitude modulator, or LCD.
  • Flat panel monitors now feature LED technology. A matrix of diodes is organized to create the display's pixel coordinates in a Light Emitting Diode (LED) emissive display device. Emitting diodes are essential components of many modern electrical and electronic devices. It has attributes such as reduced power consumption, minimal heat output, great efficiency, and higher image quality.

Speaker:

Speakers are output devices that generate audio sound and can be changed for loudness as needed. A large group of individuals can be spoken to or the entire room can be heard with it. For sound to be produced through speakers, a sound card is required. The sound card converts digital audio into electrical current, which is then transmitted to the speakers, where it is heard by us. It can be utilized when speaking with someone online or utilizing another type of technology. Speakers typically have left and right speakers, and they can be adjusted so that you can listen to sound from one or both of them. For the purpose of producing sound, electricity is used.

Multimedia Projector:

Projectors for multimedia are self-contained data projection devices. Many can handle additional data sources including VCRs and DVD players, while the majority are typically used for computer-based presentations. There is a light source, a lens, and at least one RGB input on every multimedia projector (computer). Multimedia refers to the use of a projector to show images and data from televisions, video recorders, and computers. Computers cannot be connected to video-only projectors. Not all images in the realm of multimedia projectors are created equal. The image we see is created by these projectors using numerous rows of tiny components known as pixels. How many pixels are projected determines how much information your projector can show and how clearly it will be perceived. It is called projector resolution and it is usually in two sets of number i.e. 1200x800.

The first number describes the pixels that are shown across the image horizontally, while the second number describes the pixels that are shown across the image vertically. The better the projector's resolution and the more detail is seen in the projected images, the more pixels there are. When the resolution of the computer and projector are in sync, projected images are clearest. When looking for a projector, it is a good idea to keep your computer in mind. The common resolutions are SVGA at 800 x 600, XGA at 1024 x 768, and HSV at 1280 x 1024. (SXGA).

Data input and output ports will be present on the multimedia projector. A multimedia projector's likelihood of having additional input/output ports increases with price. Some projectors have a "RGB In" port function that enables us to simultaneously connect more than one computer to the projector. We can attach an additional external monitor to our projector using the "RGB Out" connector. Audio in and audio output are additional features. The PC, DVD, and VCR are all connected to the audio in port to provide sound. For the additional sound in the huge, we must connect with an external speaker.