The advent of projectors, more so, the innovation that has led to the invention of digital projectors, is almost making chalkboards to become outdated. Instead of spending much time in preparing handwritten notes and later rewriting those on the board, trainers and teachers can use PowerPoint presentations. They may apply as well and even short video clips as a teaching tool through the aid of projectors. The projector has gained a lot of popularity in a learning profession, either at schools or organizations. The incorporation of a projector, hologram, and a screen-less display in learning may provide solutions to various problems that have been ailing this sector.
The use of a projector has become almost a necessity in organizations nowadays. It is largely because firms can use it for different purposes. Armitage (2012) defines a digital projector as a computer display. It is specialized and commonly used in the presentation for its capability of enlarging videos or images on the screen, building, or other features of architecture. The digital projector has a very bright light that aids in the projection of images. It has a capability of correcting blurriness, curves, and any other image inconsistencies (Rothwell, Butler, & Hunt, 2013). It also allows trainers to deliver their lessons to the entire class from a single personal computer. That is to say that a trainer can use them in displaying presentation for a large group of people or lecture notes. A technician connects a cable from the projector to the computer, which displays the computer screen on the wall. The wall size view is adjustable. In the presentation, the trainer would project the digital images in a form of a slide or video clips for all the trainees to view from the large wall (Reiser & Dempsey, 2011). Therefore, this paper reviews the merits of the projector and learning problems that imaging technologies would solve if corporate into learning.
Several factors have made the use of the projector popular. One of them is the ability of projectors to display large images. The use of them, which technologists sometimes refer to as front projectors, allows the adjustment of image sizes that they display. Therefore, an individual can enlarge a size of pictures displayed depending on the number of the audience. Similar, if the tutors are using a big room for teaching, then they can adjust a screen relatively to the room size. Technologists assert that a standard digital projector can zoom up to a diagonal size of about 300 inches. However, if the light output of the projector is high, it can display even larger sizes. It is advisable that the projection is set at around ninety 90-120 inches for a better quality of digital images and videos. Indeed, it is much better than what the flat screen televisions and monitors can produce (Rothwell, Butler, & Hunt, 2013).
The projector also has the capability of displaying small images. It normally depends on the room's size and the number of audience. If the audience to a presentation is small, one can just adjust the screen display to fit the room size. The standard projector can actually zoom out to the size of 60 inches. At this size, the images are very bright and sharp allowing the one to use them even in the presence of some light. It is because the use of the projector usually requires a total darkness. For this reason, the company can still use it as a monitor or a CRT screen if there is no work for projection.
Though the ease of installation may vary with the technological expertise of an individual, a standard digital projector is always very easy to install and start using. Such digital projectors are also always light. A person can actually carry them around in their bags. They can later remove them when there is a need of using them without straining so much. For example, when setting a simple display system on a table or a bookshelf rear and making the projection on the wall, it becomes vey easy and even simpler than connecting a television. The reason is that the person installing the device only needs to connect one cable to the power source and the other one to the computer. After the person has connected it, he or she would then fine tune it for a better display and quality pictures. Indeed, this can never be a problem since even mobile phones and TV sets must be well tuned (Holand, 2014). However, if the installation is permanent, normally put on the ceiling of a building, the company may need an expert to do this. After fixing the projector in the designated place, any trainer willing to use the gadget would just plug in the cables. In other words, either of the installation would still be easy for teachers.
Another factor that has led to the preference of digital projector technology over other emerging technologies is its low cost. Cennamo, Ross, and Ertmer (2010) emphasize that the use of the projector is an alternative for the expensive and big screens that many organizations cannot afford because of the initial high cost. In fact, even some projectors are cheaper than a 32-inch flat screen television set or the rear-projection televisions. Even though the prices of digital projectors vary with the quality of a given projector, they are relatively cheaper than other emerging technologies. Such ones may include: a hologram and the screen-less displays. Due to an increase in its supply and the need of the firms that produce them to make more sales revenues by lowering prices, they have experienced a reduction in their prices in the recent past. The maintenance cost of digital projectors is also low as compared to other devices. Deductively, digital projectors are the cheapest computer display units if one can use the size of diagonal display capabilities as a benchmark of costing the products (Rothwell, Butler, & Hunt, 2013).
The digital projector also saves companies a lot of space. Small front projectors are always very light, making them portable. For this reason, one can store it in a bag if there is no need of fixing them permanently. Similarly, a technologist can assist mounting the projector on the ceiling. It will ensure that the company saves maximum space for other uses. In such places as ceiling, the projector would remain invisible if it is not in use. In addition, the use of this tool also replaces the bulky and shapeless monitors that otherwise the company would have used. Thus, it enhances a general outlook of any office of the organization making it smart and presentable (Margolis & Swan, 2012).
Together with other two emerging technologies namely, the hologram and screenless displays, these gadgets could offer a solution to the needs of trainers. Before the comparison, it would be wise to review these two technologies succinctly. The first one is the hologram that August, McKissick, and Meadows (2013) describe as an advanced form of photography having the capabilities of displaying images in three dimensions. The use of hologram must be supplemented by other hardware components such as laser, lens, and mirror among others. The gadget creates the illusion three-dimensional images through the interference of the laser and an object beam. The second emerging technology involves the use of the screenless display. It shows images by projection in the absence of screens. It entails the use of virtual retinal display, visual image, and synaptic interface to broadcast images and videos. The screenless display transmits visual information from the source without using screens at all. The technology also permits the projection of three-dimensional image into space (August, McKissick, & Meadows, 2013).
How It Works
From the description of these technologies, it is quite clear that they are likely to solve several problems that organizations have been facing before (Schuchart, 2012). Firstly, Myers and the American Society for Training and Development (2011) have noted that there had been an organizational need to train continually their new employees. However, the mode of training that the firms had adopted did not bear good results in terms of making the trainees adapt to the companies' job requirements within the shortest time limits possible. It could have been because the company was using very old and obsolete methods in training some of its staff. They had gone through good schools with high technological levels. For this reason, the incorporation of these three technologies into the training of the staff of the organization would make such trainees blend with a training tool and improve their levels and speed of understanding. Concurrently, the adoption of digital technology in training the new staff would bring up to speed the other trainees with a little technological background. It is because of the visualization of most concepts in a training manual (Zaitzeff & Culbertson, 2014).
Firms were also using chalkboards as the means of training their employees. As a result, trainers who have been majorly drawn from the office staff would get dirt and exhaustion. The use of chalkboards would also dent the outlook of the boardroom and the entire office since some of these boards had been permanently fixed. For this reason, the adoption of any of these three technologies would enhance the image of the office. It is because all of them are sleek and look posh. Similarly, these gadgets would use computers for the projection. It means that the trainer can avail softcopy notes to their trainees after the session. For this reason, the trainees would not have a problem of juggling between taking good notes and, at the same time, listening and following to what the trainer has to say. The audience has only two roles to play, listening and participating. The three emerging technologies have also produced portable devices. The portability of them would save much space that, otherwise, the chalkboard would have occupied (Armitage, 2012)
Some of organizations could also limit the number of trainees that they would take at any particular moment. It was because of the use of chalkboards that would not be visible if the training involved many people. However, the adoption of a projector, screenless display, or even hologram would solve this problem in totality. The three emerging technologies would provide an opportunity for the company to train the maximum number of people that they need. For this reason, the organization does not necessarily need to use its squeezed boardroom for training. There is an alternative of hiring some spacious conference room for training. Training in such places also reinforces the morale and enhances the concentration of learners during the entire training period. For this reason, learning would be enjoyable for the recruits and make them learn the organization job's demands within a very short time (Rothwell, Butler, & Hunt, 2013).
In conclusion, it is good to acknowledge the fact that technology has revolutionalised a mode of learning. Through it, many tutors can now teach a large population of students at once. Similarly, teachers are able to avail to learners the exact notes that they have been using in conducting a lesson. The adoption of new technologies has also enhanced the speed, at which teachers can carry out their sessions. However, many of institutions are not aware of their technological needs. In addition, most of them are oblivious of the available devices in the market that could assist them in teaching. For this reason, it is very necessary for learning institutions and organizations to hire experts who can help them in evaluating their technological gaps. It would ensure that they incorporate not only technology in learning, but also the most appropriate and convenient one.
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