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The structure of an application with PAC. Presentation–abstraction–control (PAC) is a software architectural pattern.It is an interaction-oriented software architecture, and is somewhat similar to model–view–controller (MVC) in that it separates an interactive system into three types of components responsible for specific aspects of the application's functionality.
The CDC 160 series was a series of minicomputers built by Control Data Corporation.The CDC 160 and CDC 160-A were 12-bit minicomputers [1] [2] built from 1960 to 1965; the CDC 160G was a 13-bit minicomputer, with an extended version of the CDC 160-A instruction set, and a compatibility mode in which it did not use the 13th bit. [3]
A NACA Hucks starter set up to start a Vought VE-7 A Hucks starter connected to start the engine of a Hawker Nimrod A Ford Model T-based Hucks starter owned by the Shuttleworth Collection A Hucks starter is an auxiliary power unit, almost always a lorry or truck , that provides initial power to start up piston aircraft engines .
The MIM-104 Patriot is a mobile interceptor missile surface-to-air missile (SAM) system, the primary such system used by the United States Army and several allied states. It is manufactured by the U.S. defense contractor Raytheon and derives its name from the radar component of the weapon system.
The PAC P-750 XSTOL, (formerly known as the PAC 750XL) is a utility aircraft of conventional all-metal low-wing monoplane design, with fixed tricycle undercarriage. Combining the engine and wings of the PAC Cresco with a new larger fuselage and modified tail , all versions to date have been powered by a 750 hp (560 kW) Pratt & Whitney Canada ...
A block diagram is a diagram of a system in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks. [1] They are heavily used in engineering in hardware design , electronic design , software design , and process flow diagrams .
Interior of a Federal Pacific Electric Stab-Lok circuit breaker panel. Stab-Lok is a brand name of electrical circuit breakers that were manufactured primarily by Federal Pacific Electric from 1950 to 1980.
The Model 109, or Number 109, was a series of mainframe computers designed and built in the People's Republic of China, starting in 1964. [1] First Model 109, created in 1964, used vacuum tubes; The Model 109-B, China's first transistor computer was created in 1965. [1] [2] The Model 109-C followed in 1967, [1] and was used for 15 years. [2]