The principle is called solid-state hard at a major computer memory storage device as a permanent storage than solid state storage, mainly want for a robot arm to drive head rotating magnetic read and write operations concerned, ANCD or other solid-state storage, you tune different recording or zero level and a phase states.
If you want the computer to work, you have to edit out the first procedure, and then save it to get through the input device storage, ie the program is stored following execution of the program problems. The von Neumann have various designs, the computer should automatically executes the program, and executes the program instructions attributed to the force per row.
(1) fetch instruction: fetching an instruction to be executed from an address in the memory to the CPU temporarily stores the instruction register unit.
(2) Analysis of instructions: the instruction stored in the instruction register in an instruction decoder supplied, translated, micro-operations corresponding to the command.
(3) execution instruction: instruction decode fundamental issue appropriate control signals to the respective components, various operations of a predetermined instruction is completed.
(4) to prepare for the next instruction that takes the next instruction address.
Today's society is a high-speed development of society, science and technology developed information flow and exchange between people getting closer, more and more convenient life, big data is the product of this high-tech era. Big data is not in, but the content of this excavation and the number of useful value is more important than the fish, large-scale data is the key to win the competition
Reflect the value of big data in the following areas:
1. To provide products or services to a large number of consumers, businesses can take advantage of large data precision marketing
2. a small and beautiful patterns of long tail businesses can take advantage of big data transformation service to do
3. faced under pressure must be transformed traditional Internet companies need to advance with the times and take advantage of the value of big data.
Data are the result of the fact or observation, logical induction of objective things, is used to represent each concept of original material things unprocessed
The main reason binary computer using:
(1) simple technology
(2) simplified operation rules and two binary
(3) for logic operation
(4) easy conversion
(5) is represented by binary data having anti-jamming
So people to participate in operation of the sign bit, and keep only the addition, to simplify the computer operation, the original code of the invention, the inverted
The original code, the inverted outer code is signed, indicating the number of binary method, both the sign bit and the value constituting the first term of the original code.
Original code
Original code is the sign bit plus the absolute value of the true value, both with a first, a symbol representing the remaining bits representative value
Positive anti-code itself is the inverted negative which is the basis of the original code, the number of sign bits is not inverted to rest.
Complement representation is:
Complement is a positive number of its own
Negative complement is based on its original code, the sign bit unchanged, the rest of you negated, finally +1 (ie +1 on the basis of the anti-horse)
In a computer system, all values expressed by complement (storage)