The phrase "and devised a system" is correct and usable in written English.
You can use it when describing the act of creating or planning a structured method or approach to achieve a specific goal.
Example: "After analyzing the problem, the team brainstormed ideas and devised a system to improve efficiency."
Alternatives: "and created a framework" or "and developed a method".
He defined the characters of the different species and devised a system of classification.
use plays of his design, and devised a system in which he would signal the call from the sideline by grabbing the poor coach by the neck.
Acting together, they dropped low-interest loans, ceased making donations to sellers' favorite charities and devised a system to increase their profits when art sold above a guaranteed minimum, according to the documents.
Almost 10 years ago, Hervé investigated colloids (substances that are neither completely solid nor liquid, such as emulsions, mousses and gels) and devised a system of formulae based on the dispersion of gases, liquids and solids within each other.
Among its many functions, the OEEC helped abolish quantitative trade restrictions between its member countries, allocated scarce resources among them, and devised a system for regular consultation on matters of common economic concern.
It's clear that Twitter thought a lot about all three of its primary audiences – users, developers and advertisers – and devised a system that seems to respect the needs of all three.
Then Locog must sell 1.5m remaining football tickets, 1m Paralympics tickets and devise a system for reselling unwanted tickets that avoids the technical issues of last time.
Savajal needed to deal with things that few businesses in rich countries have to worry about: lack of proper roads in villages, irregularity of power supply, unreliability of water sources and devising a system of money transfer.
The legislation, which was the first major change to the nation's food safety laws since 1938, calls for the FDA to significantly step up scrutiny of domestic and imported food and devise a system aimed at preventing the kind of contamination that sickens one in six Americans every year.
Spend time with others who share our interest in a cause to thoughtfully define the cause, explore a specific solution, and devise a system to measure results.
They also recommend that the Bureau of Street Services develop a notification and inspection system, draw up a list of contractors who could perform repairs and devise a system for notifying the city when a property is in escrow so repairs could be made at the "point of sale" if the owner has not previously complied.
