September 1, 2009
1, the computer processing speed: the “speed of operation.” Computer operations per second for the number of times. Is an important indicator to measure computer performance. Initially the number of times to perform addition operations, said after the implementation of addition, multiplication, division, etc. to represent the average speed of operation. Has been widely used to perform various commands the number of the computer, consider the execution time of each instruction, with some mathematical formulas that calculate the average speed. 2, computer learning: a computer to simulate human learning behavior to automatically learn the process of acquiring knowledge and skills. Is an intelligent computer skills. Computer itself can be constantly sum up experience, accumulation andolympus digital camera best buy expansion of knowledge, modify the program to improve performance. If the computer can play chess to have this ability to learn. 3, computer information management system: the computer as a tool to collect, store, analyze and process data, obtained management information system needs. Enterprise information management system can help senior managers for quality analysis, market forecsony digital cameraasting, inventory control and so on. 4, a computer virus: a hidden in the computer system in which access to information resources, information resources can take advantage of the system for breeding and survival, affect the normal operation of computer systems, ways of sharing information through the system of transmission of executable code set. Is a program. Who knowingly design is generally a destructive process. 5, the keyboard: one of the most common computer input devices. After the main connection with the computer, the user through the keyboard to the computer input on the Jianniu programs and data. Common standard keyboard, must have 26 English letter keys, Arabic numerals 0 to 9 number keys and special function that can perform the function keys. 6, the keyboard input statement: in the program is running, the man-machine dialogue, by the operator through the keyboard to the variable assignment statement. If