Computer is follow the instructions to accept input, processing input data and generates information on the electronic equipment. There are four types of computers: microcomputers, minicomputers, mainframes and supercomputers.
The computer can solve a range of issues and has done hundreds or even thousands of times the logic to determine without feeling fatigue and boredom. It can be found in a small part of the answer. The computer can be monotonous, routine tasks instead of people, but they are not far-invasive; it in accordance with the instructions to it to work without any value judgments. But the computer can carry out a large number of instantaneous arithmetic / logic operation.
Small computer, also known as medium-sized machine, is like a desk-sized machine, their processing speed and data storage capacity ranging between the microprocessor and the supercomputer. Medium-sized companies and large companies generally use their departments for special purposes. For example, you can use them for research or monitoring of a production process. Small companies are generally the use of minicomputer for the overall data processing, such as statistics.
Macintosh Software runs only on Macintosh computers, which provides high-quality graphical user interface and very easy to use, Apple Macintosh system 7.5 is to use the Motorla the company's PowerPC microprocessor APPLE computer designed for the Mac is a an important milestone, which, like Windows NT and OS / 2 as is a powerful operating system. System 7.5 has a network function, and allowed to deliver. Windows and OS / 2 files that it has several advantages over
Data communication system is through the communication lines to send data from one place to another place electronic system, you can use the data communication through your computer send information to another machine to use a friend, you may be working for a company , its computer systems throughout a building, or even the country and the world. In other words, all the parts - the input and output units, processors and storage devices - all in different places, through communication link up. Or you may use long-distance communication lines, telephone lines, close units in the external data information. Then you may transfer the information to their computer on for the return to work and analysis.
Data communication lines can be formulated in two ways to connect: point to point and multi-point line connection. Point to point lines connected directly to send and receive equipment, while the multi-point lines to connect multiple devices, rather than a sender device and a receiver device.
Satellite communications refers to the use of communications satellites orbit from a ground station to send the information sent to another one or more of the ground station. Satellite communications is the field of communication research, which aims to obtain the lowest possible cost of increasing the scope and capacity.
Data can be asynchronous or synchronous transmission. In the asynchronous transfer mode, one can only send and receive one from the Festival and is frequently used method of microcomputers. Asynchronous transfer is also often used to slow down the final device. Its advantage is that a sender can transmit data easily. The disadvantage is the relatively slow data transfer rates. Synchronous transmission is used once to send a few bytes or data blocks a lot of information transmission. In order to achieve data transmission, the sender and recipients of sub-section block must be based on a precise time interval occurs. Therefore, the system needs a synchronous clock. Its advantage is that data can be quickly transmitted, shortcomings is necessary equipment needed for fat fees.
Translated into a computer English ~ ~ ~ ~
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