9PAC is a common abbreviation for 709 PACkage. It was a report generator developed in 1959 for the IBM 709 and used on its successor, the IBM 7090. It was developed by SHARE, an early IBM users' group, and based on the File Maintenance and Report Generator System developed by General Electric for the IBM 702, led by Harry Tellier.[1] Charles Bachman worked on its design in 1957, and although his company's order for the 709 was cancelled, he later included some of its general concepts into the more generalized idea of navigational databases. Engineers at companies such as Union Carbide, Northwest Power Company, Philips Petroleum, Dow Chemical, and Chrysler cooperated on the project.[2]
Further reading
[edit]- Jean E. Sammet 1969, p. 314. "IBM 7090 Prog Sys, SHARE 7090 9PAC Part I: Intro and Gen Princs", IBM J28-6166, White Plains, 1961.
References
[edit]- ^ Haigh, Thomas; Bachman, Charles W. (September 25–26, 2004). "Charles W. Bachman interview". ACM Oral History interviews. p. 2. doi:10.1145/1141880.1141882. ISBN 978-1-4503-1771-9.
- ^ Andrew L. Russell (April 9, 2011). "Oral-History:Charles Bachman". IEEE Oral History Network. Retrieved September 3, 2013.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction