"The World is digital"--the world of digital data overflowing

This is an "encyclopedia" that is very helpful for beginners to understand the relevant aspects of computers, covering three core areas of technology: hardware, software, and communications. All aspects of the introduction although not necessarily comprehensive, but at least to let you know what it is, some content and textbooks have links, you can do a comparison, to do a better understanding. I feel this book is really good worth reading.

First he introduced what is hardware? What is inside the computer, how it works, and how it is manufactured? How does it save and process information? What is a bit and what is a byte? How do you use it to represent music, movies, and everything? Hardware is a physical device in a computer that we can see and touch. Whether it is at home or in the office, the computer is what we can see and can touch. And of course, there's the cell phone we carry around every day. The basic composition of a computer, including the processor, storage of instructions and data, and input, which is called the Von Joyman architecture. The CPU provides arithmetic and control functions, memory and disk for storing data, keyboard, mouse and monitor are used to connect the operators. First, the computer is a digital processor; second, the computer uses BITS to represent information; again, the larger information is represented by a bit group. And everything is a binary number 0 and a representation ... It's all a bit like magic and fun.

Then introduced the cpu--CPU, RAM random access to memory (the CPU can quickly access any of the information at the same speed) memory is volatile; then began to write what is software-tell the computer to do what instructions, almost invisible touch; write what algorithm-a series of precise and unambiguous steps , and its complexity; write programming and programming languages; write what is a bug. Finally, the communication-the dialogue between computers and other devices that we need in the future-also allows us to communicate with each other, including the Internet, the World Wide Web, e-mail, social networks and many other ways.

In addition, the whole book with some analogy, examples, according to the development of time, to us to write about the history of the computer, software and the development of some content and communication, which is very helpful to our understanding. such as: 1800 France "The closest predecessor" Jacquard loom--19th century Babbage proposed "computer"--Edale Lace World First programmer--19th century Herman ' Hollerith ibm--1940 University of Pennsylvania Sir Ector and Molic made eniac-- 1949 UK-made delayed storage electronic automatic computer (EDSAC) .....

Everything in the world can be said in 0 and one, this is the author of the digital World, a variety of digital data is constantly collected, updated, connected to all corners of the world. The world of network has the knowledge we need, but there are all kinds of viruses, worms, bugs, we must learn to use this double-edged sword carefully. In addition, we should also pay attention to protect their privacy, do not arbitrarily disclose personal information. In this digital world, we need to go to or say must learn the computer, learn more about it: the world is changing, technology is changing, only continuous learning, and constantly update their knowledge, in order to better adapt to the rapid rotation of the digital world.

"The World is digital"--the world of digital data overflowing