With the development of education modernization, the application of teaching projectors is becoming more and more extensive. As a basic application of education informatization construction, projectors have become popular in the field of teaching. Faced with a dazzling brand and a variety of projectors, what basic elements should schools use to purchase projectors as the standard?
As the saying goes, shoes are worn on the feet, only you know that it is suitable and inappropriate. The most suitable is the best. When purchasing a projector, the school must proceed from its own actual situation. What is the school's teaching environment and what are the actual needs of teaching? How much can the school afford to buy? These are all things to consider. Never blindly pursue a brand, be sure to identify needs and avoid waste of resources.
Teaching practical requirements
The actual demand for teaching is the first factor to be considered. Demand includes the need for projector resolution and brightness. For the demonstration of general documents and common software interfaces in educational applications, the purchase of low-end products with a resolution of 800 × 600 (SVGA) can meet the needs. If you have high requirements for the picture quality, choose a high-end product with a resolution of 1024 × 768 (XGA) or higher. Generally speaking, the higher the resolution, the more expensive the projector. The demand for projector brightness is generally related to the size of the classroom. The brightness index of the projector should be determined according to the size of the classroom area and the lighting conditions to meet the principle of best visual effect to choose the appropriate product. Too dark pictures will make the eyes feel too hard, too bright pictures will feel dazzling, causing visual fatigue . There should be different considerations for ladder classrooms and ordinary classrooms: for small classrooms (15-30 square meters), the number of students is small, 1500 lumens is sufficient; slightly larger classrooms (30-60 square meters), Choose 1500-2500 lumens brightness model; school hall can choose 3500 lumens or more projection equipment.
Actual installation environment guidelines
The choice of many things pays attention to adapting to local conditions. The size and lighting of the classroom are factors to consider when choosing a projector. There are two types of common projectors on the market, LCD and DLP. The imaging device of the LCD projector is a liquid crystal panel. This projector has high brightness, good color reproduction and moderate price; but its light source has short life, low resolution, large volume and heavy "component". DLP (Digital Light Processor) projectors use digital micro-reflectors as light valve imaging devices. This projector has low image noise, stable picture quality, high definition, uniform pictures, and sharp colors. Therefore, the size and light of the room where the projector is installed must be considered when purchasing. If the environment requirements are not high and the display area is large, it can be used for teaching demonstrations or small meeting rooms. You can choose the LCD projector. The uniformity and sharpness of the color, you can choose DLP projector.
Operational convenience and machine compatibility guidelines
The teacher's focus is on teaching, and the projector is just a modern teaching aid, so the teacher must spend more time on the course, rather than investing more energy to study and operate the projector. Therefore, the projector should be simple and convenient in operation. Teaching projectors usually form an electronic teaching system with other equipment, usually connected with computers, televisions and other equipment. In order to ensure that teachers can connect these devices in a short time, the projector must have the characteristics of convenient and simple connection. For example, the BenQ projector only needs to complete the simple operation of "1, 2, 3", it can be easily used, and the remote control and briefing wizard equipped with the projector allow teachers to demonstrate the teaching content while controlling the page from a distance process. At the same time, the projector must have good compatibility with these devices. For example, projectors with high compatibility generally have an optional switch and image processor, so that the projector can easily manage different input and output devices. Considering the school's existing audio-visual products, the projector must be compatible with the interface, etc., otherwise it will bring a variety of inconveniences and waste of teaching resources.
Projector brand quality and price guidelines
We know that the projector is a teaching product with a high usage rate. It will be used for a long period of time in daily teaching. This has high requirements for the quality of the projector. Is it good under the premise of good performance? Ensure that there is no problem with quality. And usually the more well-known companies have better quality and after-sales service to a certain extent. No matter which brand of product you buy, you should choose a manufacturer with a warranty period of more than 3 years, good after-sales service, and a reputation. After considering the various performance and after-sales services of the projector, the price of the projector is also an important factor to consider when purchasing, because high quality and low price are the eternal pursuit of consumers, and the school must be minimized under the constraints of education funds. The price is to buy the most suitable teaching products for teachers and students.
Through the analysis of the above aspects, we can understand this: the school must not only meet the needs of the school, but also make it easy for teachers and students to use, considering the actual situation of the school, and also consider the economic affordability of the school . Of course, the most important thing is that the quality and service of the projector must be in place.
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