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Today, you go to ask the people around him, can you use PPT? With such issues people may be shrugged off, now, what age, who also cannot use PPT?

The world famous slides sharing website (http://www.slideshare.net/ above), a material on it said, at present on the world, every day at least 300 million people watching a PowerPoint (hereinafter referred as PPT). We have no need to investigate the data’s Accuracy, at least we can see all around us, PPT has become the important learning and communicating the information technology tools, From international academic meeting to the medium-sized school classroom teaching; From the investment project report of millions of dollars to decide fate demonstrated the 5 minutes to apply for a job, Whether people realize that the PPT is wonderful or not , it has affected the study, work, and career and life of the speaker and the audience

The American society scientist sorrow Moran pointed out that the  PPT is the 21 st century new esperanto, Bill Gates to the human biggest contribution is his creation of the human social communication esperanto PPT. the great contribution the Bill Gates made to mankind is that he created the esperanto PPT of the human society

The designing and speech the effect of PPT will directly affect the speaker’s teaching effect, how to design a high quality teaching PPT? Below I conclude that the seven fundamental principles:

1. The perspective-taking

Don't get used to only according to your idea, you have to know the design PPT is for the audience,  the audience is god, your PPT is always for audience service, so in the design, don’t be self-centered, from the point of view of the audience to transposition thinking how to design PPT.a small tips: when you making a teaching with PPT, and you can not exactly control the slideshow time, so you can try PowerPoint to video tool to change and convert PowerPoint to video format and let it play automatically according to your time setting.

Common misunderstandings: in his own speaker on a computer screen, no matter design PPT font size, color, and pictures of the details see clear, but at the meeting, the projection put PPT to the wall or the screen, the listeners in the back is a confused. Remember, the audience is not sitting at the table looking at your PPT.

2. The overall design

In the teaching activities, PPT is a media tool transferring the thought and information between the speaker and audience. Whether a class is wonderful or not, the key factor is the speaker not tool, can't put the cart before the horse, don’t regard the PPT design is more important than content and the audience. The speaker design teaching, first of all the attention to your audience, pay attention to your speech content, and then, according to the need of teaching, according to the actual needs of teaching situation, flexibly design and use PPT, the goal was to use PPT to promote and improve the teaching effect.

In the teaching, PPT can realize two functions, the first function is a visual aid tool, to support the speaker lectures; The second function of PPT is independent of the media, or as a reading, transfer the speaker thoughts or teaching information, learning to read for learners. The general teaching activities, speaker with PPT is mainly use the first function.

Common misunderstandings: many speaker just PPT to write, use as a long speech, without full speech alternative PPT to play in the process of teaching in PPT report visual auxiliary function. This leads to the audience often try to read text on screen PPT speech, interference and spread the audience to the attention of the speaker I speak.

3. Visual thinking and expression

people often use of words and language to express ideas, visualization refers to the different speaker of the thought mainly through the can see the pictures, the graph way transmission. Mainly used for teaching and because PPT is mainly used in meeting and other occasions, at least two causes special need to be paid attention to visual thinking and expression:

First, time reason, in the process of speech, PPT is operated by the speaker, cooperate the speech manipulation and flip, audience can't control their reading time. So, PPT seeing audience PPT, and not as reading when word can carefully taste and repeated browsing with thinking. people read the writing is linear, and at the same time will read the abstract text symbols in his own mind into meaning understand, need certain of time; And people look like instantaneous and at the same time into meaning understanding, reading comprehension of the image faster than words quickly. At the same time, it is also report and the characteristics of the classroom teaching of environmental requirements and have no time to let the audience one read it carefully screen above. So, ask the speaker to large chunks of text or rich thought into visual images, PPT don't need to express all parties as word (you can consider burn PowerPoint to DVD so that you can play PowerPoint on DVD or TV)

All colleges and universities should make full use of multimedia and network technology, adopting the new teaching model and improve the mode single. "The modern education technology and college English teaching has been mentioned the combination of college English teaching reform agenda, and PPT courseware and application has become one of the required subjects of college English teachers. This article will focus on how to use PPT courseware for teaching and the advantages and disadvantages of PPT.

This is the traditional teaching measure:

 

The effective measure to increasing classroom teaching

Compared with the traditional single college English class which regards the blackboard and the teacher as the main body, using PPT courseware for teaching has several advantages, as follows:

1. Increase classroom capacity. PPT courseware interface is rich and lively, it can in an instant make the voice, images and text editor get together, compared with the traditional teaching mode, and increase the volume of class, for learner’s knowledge memory.

2. The systematization of teaching content. PPT courseware in content to present more systematic and the direct, not only can greatly reduce the class time of teacher, but also helps students understanding and mastering of knowledge.

3. Flexibly adjusting teaching contents. The teacher can flexibly add and reduce the teaching content, especially in heard class teaching, it can provide examples and image, also provide students with the imitation object, and can promote them to quickly find concerns to make conversation practice, improve the teaching quality.

 

This is the modern teaching measure

When using PPT courseware for teaching, the teacher should pay attention to the correct method of teaching. First, the teacher should pay attention to the "interactive" of the English teaching, should not regard the showing information as the teaching purpose, and should develop the students' communicative ability as the ultimate goal. Second, the teacher in the classroom should pay attention to language teaching "humanism", and stimulate students' learning motivation. If teachers can use audio courseware PPT show famous speech, wonderful movie dialogue, catchy English poem, thought-provoking writer interviews, let the students to increase the perceptual knowledge, English and appreciate the cultures of the elegant demeanor, enhance their learning in the hair power. Finally, the teacher should be relying on the PPT teaching to play a directive role, in order to cultivate the students' self-learning ability. Such as teaching students how to write news reports articles, the teacher can first show a news structure through the PPT courseware system, analysis the characteristics of news English writing, and then divided the student into groups, in some business fields, most business use PowerPoint for their promotion presentation with converting PowerPoint to video. That’s also an innovative method.  In this way, students cultivate the independent learning and cooperative learning ability through teacher's guidance.

The teacher should not be player of the PPT

In a sense, PPT courseware is artificially deified, so that part of the teachers thinks if there is no PPT, there would be no teaching new technology". To please the students, teachers design the fancy graphics and complex in courseware design, but the smile of the animation students is the physiology reaction of visual stimuli, and not the spark of communication between teachers and students wisdom. Teachers’ discourse right is largely graphic simple subversion of the stimulus; the role of teacher also fell to be "moments" slide. So, how teachers in teaching and correct play the function of the courseware PPT? The author thinks that:

Teachers should grasp the opportunity to use PPT courseware. The advantage of PPT courseware is that in a short time providing a mass audience of multimedia information in a  direct methods, Therefore, the teacher should mainly used in classroom teaching and the introduction of the present stage, through the voice, vision form to inspire students' interest, realize the needed knowledge to prepare. The characteristics of English teaching require a lot of language interaction between teachers and students in classroom teaching, so the central link, the application of the PPT should be pushed auxiliary status; Instead, teachers should use their own language advantage and personality, and form the real ideas with students.

Finally, the teacher should combine PPT courseware with other modern education measures, such as  PowerPoint to DVD converter to form the real teaching advantage.

Adobe PDF reference told us that a PDF files can be explained through the following four aspects:

1. The object, a PDF document is composed of a set of basic data types of data structure.

2. File (physical structure), decided how object stores in a PDF document, how they are visited, how to be updated. This structure is independent of the semantic objects.

3. Document structure, explain how some basic object types shows the composition of the PDF document: for example page, pictures, font, notation, etc.

4. Content flow, a PDF document content flow contains a series of instructions, and describes the appearance of the page or other graphic and appearance of the document content entity.

PDF document logical structure

As a structured file format, a PDF document is made of some called "object". And every object has digital label, so the object can be referenced by other object. These objects don't need appear in PDF documents inside in order, the order can be arbitrary, such as a PDF file have 3 page, page 3 will appear on page 1, the only benefit of object appears in order is to increase the readability of the file, if you don't use text editor to read PDF structure, then you need not to concern about the order.

File (Trail), indicating that the root object number, and the position of the table that cross references, through refer to the table can find directory objects (query Catalog). This directory object is the PDF documents of the root object, including the outline of a PDF document (like) and page group object (from mix. Outline the object is to point to PDF files bookmark trees; Page groups object (mix) with the file page number, each page object

 

I think many people is most interested in cracking the encryption PDF file , so in this article we also discuss whether the encryption PDF can be cracked? Are there many methods can come to crack encryption PDF files? The answer for this question is obvious, no encryption methods are absolutely safe, absolutely can't be cracked, Below we have to look at what kinds of conventional cracking encryption method. I’m afraid you’d better use the professional PDF Password remover or PDF password cracker to crack the encryption PDF file.

Page object as the most important object in PDF, including how to display the page information, such as the fonts, about the content (the text, pictures, etc.) ( the size of the page. Inside information can read directly, of course, the real information stored in other object. Page contains information is included in a stream flow (called), the flow of the object length (bytes) must be given directly to another object or (contain a whole numerical, suggests that the flow length). The following figure:

 

PDF analytic process

Review of the above detailed explanation; we can put this simple PDF analytic process is simple as follows by illustrations

 

Here, one of the simplest PDF file introduction is over, everyone should have to know the PDF file format and specific. In the nest article, we will emphasize the PDF converter for mac, please keep reading!