Time-sharing: Difference between revisions

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The term '''[[wikipedia:time-sharing|time-sharing]]''' refers to the practice of allowing many users to access a computer or several computers, thus sharing time on a single system. It is similar to the more modern [[wikipedia:cloud computing|cloud computing]], the main difference being that cloud systems tend to use a much larger pool of servers. Time-sharing was the most common way to run APL in the 1970s, with [[STSC]] and [[IPSA]] being the best known providers, and APL had a strong influence on time-sharing, with many time-sharing systems being written in APL.
The term '''[[wikipedia:time-sharing|time-sharing]]''' refers to the practice of allowing many users to access a computer or several computers, thus sharing time on a single system. It is similar to the more modern [[wikipedia:cloud computing|cloud computing]], the main difference being that cloud systems tend to use a much larger pool of servers. Time-sharing was the most common way to run APL in the 1970s, with [[STSC]] and [[IPSA]] being the best known providers, and APL had a strong influence on time-sharing, with many time-sharing systems being written in APL.


The APL time-sharing business came into being with the release of [[APL\360]] as an [[wikipedia:IBM Type III Library|IBM Type III Library]] in August 1968,<ref>[[Adin Falkoff]]. [https://doi.org/10.1145/800012.808128 "APL\360 History"] ([https://www.jsoftware.com/papers/apl360history.htm web]) at [[APL69]].</ref> meaning that its source code was available for use outside of IBM. Other companies were quick to adapt the existing time-sharing model to APL, with eight companies offering this service in 1968 alone.<ref>[[Eric Iverson]]. "The Integration of APL into the Larger World of Data Processing" at [[IPSA '80]].</ref> These included [[I.P. Sharp Associates]], which had assisted in them implementation of APL\360 since 1966 (in particular, through employee [[Roger Moore]]), and [[STSC]], the Scientific Time Sharing Corporation. The two companies offered systems using the same APL, [[APL*PLUS]], with IPSA focusing on the Canadian market and STSC on the United States.
The APL time-sharing business came into being with the release of [[APL\360]] as an [[wikipedia:IBM Type III Library|IBM Type III Library]] in August 1968,<ref>[[Adin Falkoff]]. [https://doi.org/10.1145/800012.808128 "APL\360 History"] ([https://www.jsoftware.com/papers/apl360history.htm web]) at [[APL69]].</ref> meaning that its source code was available for use outside of IBM. Other companies were quick to adapt the existing time-sharing model to APL, with eight companies offering this service in 1968 alone.<ref>[[Eric Iverson]]. "The Integration of APL into the Larger World of Data Processing" at [[IPSA '80]].</ref> These included [[I.P. Sharp Associates]], which had assisted in the implementation of APL\360 since 1966 (in particular, through employee [[Roger Moore]]), and [[STSC]], the Scientific Time Sharing Corporation. The two companies offered systems using the same APL, [[APL*PLUS]], with IPSA focusing on the Canadian market and STSC on the United States.


Time-sharing companies and users drove the development of APL in the 1970s, with [[IBM]] adopting and unifying new features after careful consideration. Time-shared APLs were the first to have file system interfaces; IBM first offered an APL that could share resources with other programs in 1973 with [[APL.SV]], and only supported files beginning with [[VS APL]] in 1976.
Time-sharing companies and users drove the development of APL in the 1970s, with [[IBM]] adopting and unifying new features after careful consideration. Time-shared APLs were the first to have file system interfaces; IBM first offered an APL that could share resources with other programs in 1973 with [[APL.SV]], and only supported files beginning with [[VS APL]] in 1976.

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