The computer is accepting input, processing according to the instructions of the input data and information of electronic equipment. There are four types of single-chip computer: marketing, and mainframes and giant computer.
Computers can solve a series of problems, and make hundreds and even thousands of times but don't feel tired logic and bored. It can be found in the small hours. The computer can be in drab, routine tasks instead of one aspect, but they have not far invasive, It according to its work instructions and are not of any value judgment. But the computer can be instantaneous makes lots of arithmetic/logic operation.
Small computer also called medium machine, is like a desk, the size of the machine processing speed and data storage capacity between single-chip and giant computer. Medium-sized companies and large company department for special purposes generally use them. For example, they can be used for research or monitor a production process. Small companies generally used for general data processing, marketing, for example.
Only in the Macintosh computer Macintosh on the run, it provides the high quality of graphical user interface, and very easy to use, Apple Macintosh system is used for Motorla 7.5 PowerPC company Apple computer design of the microprocessor in the Macintosh, it is an important milestone, they like Windows NT and OS / 2 is a powerful operating system. The System has the function of network, and 7.5 can read. Windows and OS / 2 files it has several advantages
Data communication system is through the communication line will transmit data from one place to another place in electronic system, you can use the data communication through your computer will send information to use another machine friend, you have to work in the company, its computer systems around the building, and even the world. That means, all parts - the input and output unit, the processor and storage equipment - are in different places, it is through the communication link. Or, you may use telecommunications line, line, located near the external data unit. Then you may be transferred to their information used to work on a computer.
Data communications lines can be made by two ways connection: point-to-point connections with a multipoint line. Point-to-point circuit connected directly to send and receive equipment, and a multipoint line connecting multiple devices, rather than just a sender equipment and a receiver equipment.
Satellite communication refers to using the rail communication satellites sent from a ground of one or more information to other sites. Satellite communication is communication field research, its purpose is possible price increase obtain the scope and capacity.
Data to asynchronous transfer mode. Asynchronous transfer mode in, can send and receive a year since the day that is often used method. Asynchronous transfer is often used to slow end equipment. Its advantage is sending a convenient can transmit data. Defect is relatively slow data transfer rate. Synchronous transmission used for sending a byte, or a few pieces of data transmission of information. In order to realize the data transmission, the sender and receiver with accurate section block interval to appear. Therefore, the system requires a synchronous clock. Its advantages are data can be quickly, defect is needed to send fee