MIS 300 TG 3 Notes
MIS 300
TG3 Notes
Page 402. Notes the evolution of the Modern IT infrastructure.
Standalone mainframes: organizations initially used mainframe computers in their engineering and accounting departments. The mainframe typically was housed in a secure area, and only MIS personnel had access to it.
Mainframe and dumb terminals: forcing users to go to wherever the mainframe was located was time consuming and inefficient. As a result, firms began placing so called dumb terminals – electronic typewriters with little processing power—in user departments. This arrangement enabled users to input computer programs into the mainframe from their departments, remote job entry.
PCs: First PCs= 1970’s. IBM’s debut in 1981. Users began bringing personal computers to the workplace to improve their productivity, by using spreadsheet and word processing applications. These computers initially were not supported by the firms MIS department. When the number of personal computers increased dramatically, however, organizations decided to support personal computers, and they established policies as to which personal computers and software they would support.
Local Area Networks (LAN) and client/server computing: when personal computers are networked indicidual productivity is substantially increased. For this reason, organizations began to connect personal computers into local area networks (LANs) and then connect these LANs to the mainframe, a type of processing known as client/server computing.
The Client/server model is where one computer makes a request (client) and another computer (server) satisfies the request. The two computers can be on different networks (and on the Internet).
Enterprise computing: 1990’s= organizations began to use networking standards to integrate different kinds of networks throughout the firm, thereby creating enterprise computing. When the internet became widespread in 1995, organizations began using the TCP/IP networking protocol to
TG3 Notes
Page 402. Notes the evolution of the Modern IT infrastructure.
Standalone mainframes: organizations initially used mainframe computers in their engineering and accounting departments. The mainframe typically was housed in a secure area, and only MIS personnel had access to it.
Mainframe and dumb terminals: forcing users to go to wherever the mainframe was located was time consuming and inefficient. As a result, firms began placing so called dumb terminals – electronic typewriters with little processing power—in user departments. This arrangement enabled users to input computer programs into the mainframe from their departments, remote job entry.
PCs: First PCs= 1970’s. IBM’s debut in 1981. Users began bringing personal computers to the workplace to improve their productivity, by using spreadsheet and word processing applications. These computers initially were not supported by the firms MIS department. When the number of personal computers increased dramatically, however, organizations decided to support personal computers, and they established policies as to which personal computers and software they would support.
Local Area Networks (LAN) and client/server computing: when personal computers are networked indicidual productivity is substantially increased. For this reason, organizations began to connect personal computers into local area networks (LANs) and then connect these LANs to the mainframe, a type of processing known as client/server computing.
The Client/server model is where one computer makes a request (client) and another computer (server) satisfies the request. The two computers can be on different networks (and on the Internet).
Enterprise computing: 1990’s= organizations began to use networking standards to integrate different kinds of networks throughout the firm, thereby creating enterprise computing. When the internet became widespread in 1995, organizations began using the TCP/IP networking protocol to