Hex:
Binary: Binary computer technology is widely used, the kind of number system. 19th century Ireland logician George Boole thought process of logical propositions is transformed into the symbol "0", "1" is some kind of algebra, calculus band is every bit 2 into the binary system, 0,1 is the basic operators. Because it has only two digits using 0,1 symbol, very simple and convenient, easy to implement electronically.
Binary adder
hardware:
Hardware system there are five major components: an arithmetic unit, a controller, a memory, input devices, output devices.
Arithmetic: arithmetic and is responsible for remote operation, the controller together form a central processor.
Controller: is responsible for sending and receiving commands.
Memory: is used to store a program in progress, the program and the data to be processed the data immediately.
Input device: the device is used for input. Such as a keyboard, scanner or the like.
Output device: the device is used for output. Such as a display, audio and the like.
Motherboard: motherboard generally rectangular plate, above the main circuit composed of a computer system is installed, generally BTOS chip, I / O control chip, and the key panel, the interface control switch, lamp connectors, expansion slots, and the motherboard original card DC power, power connectors and the like.
Software program in order to complete a particular job and development.
The hardware is based on hardware, software needs to be activated by the control system hardware, and allow mutual coordination between the various hardware work. On the basis of the system software on the user, the user is the control system software. And install the appropriate software on the basis of the system software to complete the work required by the user. Know, so that a minimum of hardware, the hardware layer of system software, system software layer is the application software, and the top of the user.
Computer commonly known as a computer, a high-speed computing for modern electronic calculators. It may be numerical calculation (1 + 1 = 2), but can be logically calculated, as well as storage memory, modern intelligent electronic device is capable of operating in accordance with a program, the automatic high-speed processing of massive data.
Tape advantage over the hard drive:
1. Cost-effective to engage
2. longer shelf life
3. energy consumption
4. The write data aspects better
The retain data better aspect
system software:
System Software: System software he looked refers to the control and coordination of computers and peripheral equipment to support application development and operation of the system is a collection of programs without user intervention, the main function is scheduling, monitoring and maintenance of computer systems, is responsible for managing computer system in a variety of independent hardware so that they can coordinate their work.
System software allows computer users and other software to the computer as a whole, without the need to take into account whether each underlying hardware works.
System Software example: Windows xp Windows7 Windows8 Windows 10 Android ios Linux, etc.
Applications examples: iQIYI video STORM QQ Office
