WikiVisually
Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
Celebrities Great Cities Wars and Battles Orders and Medals History by Country Best Campuses Countries of the World Supercars Richest US Counties Sports Largest Empires Kings of France Crown Jewels Animals Tallest Buildings British Monarchs Wonders of Nature Rare Coins Great Artists World Banknotes Great Museums Famous Castles Presidents Ancient Marvels Largest Palaces Recovered Treasures
more top lists
History
Software development
Videos
Page
Software development is the process used to create software. Programming and maintaining the source code is the central step of this process, but it also includes conceiving the project, evaluating its feasibility, analyzing the business requirements, software design, testing, to release. Software engineering, in addition to development, also includes project management, employee management, and other overhead functions. Software development may be sequential, in which each step is complete before the next begins, but iterative development methods where multiple steps can be executed at once and earlier steps can be revisited have also been devised to improve flexibility, efficiency, and scheduling.
Flowchart of the evolutionary prototyping model, an iterative development model
Flowchart of the evolutionary prototyping model, an iterative development model
Computer programming
Videos
Page
Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks. It involves designing and implementing algorithms, step-by-step specifications of procedures, by writing code in one or more programming languages. Programmers typically use high-level programming languages that are more easily intelligible to humans than machine code, which is directly executed by the central processing unit. Proficient programming usually requires expertise in several different subjects, including knowledge of the application domain, details of programming languages and generic code libraries, specialized algorithms, and formal logic.
Ada Lovelace, whose notes were added to the end of Luigi Menabrea's paper included the first algorithm designed for processing by Charles Babbage's An
Ada Lovelace, whose notes were added to the end of Luigi Menabrea's paper included the first algorithm designed for processing by Charles Babbage's Analytical Engine. She is often recognized as history's first computer programmer.
Data and instructions were once stored on external punched cards, which were kept in order and arranged in program decks.
Data and instructions were once stored on external punched cards, which were kept in order and arranged in program decks.
Wired control panel for an IBM 402 Accounting Machine. Wires connect pulse streams from the card reader to counters and other internal logic and ultim
Wired control panel for an IBM 402 Accounting Machine. Wires connect pulse streams from the card reader to counters and other internal logic and ultimately to the printer.
The first known actual bug causing a problem in a computer was a moth, trapped inside a Harvard mainframe, recorded in a log book entry dated Septembe
The first known actual bug causing a problem in a computer was a moth, trapped inside a Harvard mainframe, recorded in a log book entry dated September 9, 1947. "Bug" was already a common term for a software defect when this insect was found.