The Book of the World is digital

This "world is digital" is a popular science book, and the reader is suitable for our newly-started students. This book does not have the advanced technical jargon, but he fully explains how computing and communication work today, let us realize that the world is digital, and computers and computing everywhere, we have to agree that we live in the digital age.

This book first introduces us to what is in the computer, this chapter let me really realize the computer has something, let me know it better. In the hardware of the most important is the CPU, in the third chapter of the book into the CPU, I recognize the real CPU, in the hardware introduced this piece I see the charm of the computer, see the real connotation of the computer. To the part of the software This is what our software majors must learn. There is a sentence in the book, "Computer systems are the design of a multi-party trade-offs, continuous choice of excellent examples, reminding us that the design is impossible everywhere, the world No free lunch." Desktop computers, laptops, tablets, and mobile phones are also computing devices, but they make a clear choice in terms of size, weight, computing power, and cost constraints. "Life is so we do not have one can do the best, so we have been trying to make some trade-offs, so the computer system is not exactly right so we have to make a choice of computer, we want to make amazing software must do this, so that our software can attract people." The book also speaks of programming and programming languages, where programs must take into account real-world problems, such as insufficient memory, slow processor speed, invalid or malicious input, broken network connections, and human weaknesses (invisible, but often cause other problems to deteriorate). So, if the algorithm is an idealized recipe, then the program is to let the cooking robot at risk of enemy fire for the army to prepare one months for the operation of the instructions required for supplies. So for those of us who are going to be in the IT industry, we have to understand the importance of programming, since there are many practical limitations to the program, but we can still use our wisdom to change the program, so that the program is no longer so limited. The book also said that learning programming this aspect, this is what we beginners should be careful to see. The book says that if you make a day with 10 lines of code debugging is not good, then others say that you can deliver the million-line program on time, and there is no bug, you believe it? In other words, a bit of programming common sense can also make people understand, in fact, it is not written what the program is so difficult, the big deal please help you write Bai. Programming may not be so simple, if it is really a few lines of code can not run out, or do not continue in this area.

So no matter how changeable today's technology, people are unchanged. We should make good use of the present digital world.

The Book of the World is digital