When students talk about study the first thing comes to their minds will be textbooks. In university, almost every student needs textbooks for their courses; however, most of these books are heavy and expensive. Most professors require students in their classes buy the textbooks for their course. Many people think that buy the text book is not necessary. Because there are many things which are electronic equipment we can use to instead of the textbooks. But some people disagree with this opinion, they think textbooks are important, nothing can replace it. Textbooks are necessary for students because books are healthier than electronic screens, more credible than electronic sources and more historical than electronic sources and more historical than electronic equipment.
Many people think text books should be replaced by other electronic products, but most people are still using text book, because it is healthier than an electronic screen. For example, gazing at electronic screen too long time will cause visual symptoms, using electronic equipment too long will cause obesity if user spends too much time on it, and the radiator form electronic equipment will cause skin problem. There are many people got some visual symptoms when they work with electronic screen. Goldsborough (2007) writes that “Several studies over the years have shown that one or more of these visual symptoms occurs in 75 to 90 percent of people working at a computer.”(P12). This report shows the percentage of people who got visual symptoms because they work with computer for a long time. So it is a problem about using electronic equipment to read text-books, it will cause visual symptom. Also, people spending too much time on computer will increase the risk of become obesity. Werner (2012) writes that the rates of obesity are relates with the time people spend in front of a screen play games or works (P381). That means using computer too long time will