2019-2020-1 semester 20,192,419 "Introduction to cyberspace security professionals," summed up the first week of learning (reading experience)
By learning a second portion of the information layer "Introduction to Computer Science", I was prepared positional notation number learned from the second chapter, arranged in the order in which the numbers, each number having a bit value, with each digital value is equal to the product and its bit value. Bit base count value is a power system. Thus, in decimal notation system, the bit value is a power of 10; in a binary number system, the bit value is a power of two.
Any number indicated by the positional notation arithmetic operation can be performed. Decimal arithmetic rule also applies to other number system. To count the maximum number the system will add a carry initiator.
Binary, octal and hexadecimal numbers are relevant because they are the base of a power of two. This relationship provides shortcuts for numeric conversion between them. The number of binary computer hardware used. 0 corresponds to a low level signal, a high level signal equivalent to 1.
I learned from the third chapter computer is a multimedia device, the operation from the digital data to the graphics, the video and then, inclusive. Because the computer can only operate binary value, so that all types of data must be represented as a binary form. Data can be divided into two categories: continuous (analog) and discrete).
Represented by a binary integer values of their corresponding symbolic representation value have negative representation and complement notation. Real consists of three parts, namely exponential notation, and the mantissa specified decimal place. Character set is alphanumeric characters indicating a list of their code. The most commonly used characters are Unicode (each character is represented by a 16-bit), ASCII is a subset of it. 8-bit ASCII character set is sufficient for English, but not enough to represent other languages. Many text compression method, storage space can be reduced to reduce the time of delivery of text or text between machines. The audio information is represented as sound waves of mathematics. Colors are represented by three values, each shows the red, blue or green share. It shows the basic method of the image of the two, which is the bitmap and vector graphics. Video image is divided into a series of static images.
In addition, I also understand the importance of reading. Even more activities, no matter how busy, should always be read. "Learning is endless suffering for the boat," and only continuous learning, arm themselves, to be able to enrich their life.