Computer Organization Arithmetic and logic unit (ALU). This is the manufacturing" section of the computer. It is responsible for performing calculations. It contains the decision mechanisms that allow the computer output unit Central processing unit (CPU). This is the administrative section of the computer Secondary storage unit. This is the long-term, high-capacity warehousing" section of the computer
Computer Organization ◼ Arithmetic and logic unit (ALU). This is the "manufacturing" section of the computer. It is responsible for performing calculations. It contains the decision mechanisms that allow the computer Output unit. ◼ Central processing unit (CPU). This is the "administrative" section of the computer. ◼ Secondary storage unit. This is the long-term, high-capacity "warehousing" section of the computer
Early Operating Systems Early computers could perform only one job or task at a time. This is often called single-user batch processing. The computer runs a single program at a time while processing data in gr。 ups or batches. Early operating systems smoothed and speeded up the transition between jobs, and hence increased the amount of work, or throughput, computers could process
Early Operating Systems ◼ Early computers could perform only one job or task at a time. This is often called single-user batch processing. The computer runs a single program at a time while processing data in groups or batches. ◼ Early operating systems smoothed and speeded up the transition between jobs, and hence increased the amount of work, or throughput, computers could process
Personal, Distributed and Client/Server Computing The most powerful desktop machine scalled workstations provide individual users with enormous capabilities Information is shared easily across computer networks, where computers called file servers offer a common data store that may be used by client computers distributed throughout the network, hence the term client/server computing C+t has become widely used for writing software for operating systems, for computer networking and for distributed client/server applications
Personal, Distributed and Client/Server Computing ◼ The most powerful desktop machine scalled workstations provide individual users with enormous capabilities. ◼ Information is shared easily across computer networks, where computers called file servers offer a common data store that may be used by client computers distributed throughout the network, hence the term client/server computing. ◼ C++ has become widely used for writing software for operating systems, for computer networking and for distributed client/server applications
The Internet and the World Wide web 无线用尸; Seago g 已海歌 查询用户 无线通讯网 港区无线局域网
The Internet and the World Wide Web
The Internet and the World Wide Web The Internet and the world wide web are surel among humankind 's most important and profound creations In the past, most computer applications ran on computers that were not connected to one another. Today s applications can be written to communicate among the world's computers The Internet mixes computing and communications technologies. It makes our work easier. It makes information instantly and conveniently accessible worldwide. It enables individuals and local small businesses to get worldwide exposure
The Internet and the World Wide Web ◼ The Internet and the World Wide Web are surely among humankind's most important and profound creations. ◼ In the past, most computer applications ran on computers that were not connected to one another. Today's applications can be written to communicate among the world's computers. ◼ The Internet mixes computing and communications technologies. It makes our work easier. It makes information instantly and conveniently accessible worldwide. It enables individuals and local small businesses to get worldwide exposure