Why study computer technology
(1) work high starting point, the development of space-largest computer engineer and now the gap is very large, a statistical data from ChinaHR display: computer engineer demand gap of more than 60 million people each year, and with the popularity of the Chinese computer data The rapid increase.
(2) professional long life, the older the more popular computer engineering career relatively long life, and treatment of computer engineers will increase as you accumulate experience continues to increase
To bring the benefits of computer
A simplified reduce the calculation amount, to reduce the computational effort is repeated
Second, a better audio-visual enjoyment
Third, to narrow the distance between people, especially the distance between strangers, easy to exchange
Fourth, the better and more efficient sharing of data and information resources
Fifth, the expansion of the human imagination, improve design capability
Input and output devices of the first generation type computers is limited. Input device is a conventional punch card reader, for introducing the instructions and data memory; and an output device for storing results it is generally tape. With advances in technology, a wealth of input and output devices is improved. A personal computer as an example: The keyboard and mouse are the main tool for the user to input information directly to the computer, monitor, printer, speakers, overhead processing result is returned. There are also many other input devices can accept different kinds of information, such as digital cameras can input image.
Input and output devices, it is worth noting that there are two types: the first type is a secondary storage devices, like hard disks, CD or other slow but has a high capacity of the device. The second is a computer network access device, through the Inter achieved their computer direct data transfer greatly enhanced the value of the computer. Today, the Internet and the achievements of the tens of millions of dollars of computer various types of data transfer between each other.
