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SK8 (programming Language)
SK8 (pronounced "skate") was a multimedia authoring environment developed in Apple's Advanced Technology Group from 1988 until 1997. It was described as "HyperCard on steroids", combining a version of HyperCard's HyperTalk programming language with a modern object-oriented application platform. The project's goal was to allow creative designers to create complex, stand-alone applications. The main components of SK8 included the object system, the programming language, the graphics and components libraries, and the Project Builder, an integrated development environment. For much of its history, SK8 remained a research project, and inspired a number of other Apple projects like AppleScript, as well as seeing use as a prototyping platform. Although around 1993 a team was assigned by the Apple Product Division to release a SK8 runtime, the limitation of the Mac's capabilities as well as the shift to the PowerPC chip made such a large project intractable. With the bulk of the origina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Object-oriented Programming
Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which can contain data and code. The data is in the form of fields (often known as attributes or ''properties''), and the code is in the form of procedures (often known as ''methods''). A common feature of objects is that procedures (or methods) are attached to them and can access and modify the object's data fields. In this brand of OOP, there is usually a special name such as or used to refer to the current object. In OOP, computer programs are designed by making them out of objects that interact with one another. OOP languages are diverse, but the most popular ones are class-based, meaning that objects are instances of classes, which also determine their types. Many of the most widely used programming languages (such as C++, Java, Python, etc.) are multi-paradigm and they support object-oriented programming to a greater or lesser degree, typically in combination with imper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Manipulation Interface
In computer science, human–computer interaction, and interaction design, direct manipulation is an approach to interfaces which involves continuous representation of objects of interest together with rapid, reversible, and incremental actions and feedback. As opposed to other interaction styles, for example, the command language, the intention of direct manipulation is to allow a user to manipulate objects presented to them, using actions that correspond at least loosely to manipulation of physical objects. An example of direct manipulation is resizing a graphical shape, such as a rectangle, by dragging its corners or edges with a mouse. Having real-world metaphors for objects and actions can make it easier for a user to learn and use an interface (some might say that the interface is more natural or intuitive), and rapid, incremental feedback allows a user to make fewer errors and complete tasks in less time, because they can see the results of an action before completing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NeXTSTEP
NeXTSTEP is a discontinued object-oriented, multitasking operating system based on the Mach kernel and the UNIX-derived BSD. It was developed by NeXT Computer in the late 1980s and early 1990s and was initially used for its range of proprietary workstation computers such as the NeXTcube. It was later ported to several other computer architectures. Although relatively unsuccessful at the time, it attracted interest from computer scientists and researchers. It hosted the original development of the Electronic AppWrapper, the first commercial electronic software distribution catalog to collectively manage encryption and provide digital rights for application software and digital media, a forerunner of the modern "app store" concept. It is the platform on which Tim Berners-Lee created the first web browser, and on which id Software developed the video games ''Doom'' and '' Quake''. In 1996, NeXT was acquired by Apple Computer to succeed the classic Mac OS, by merging NeXTSTEP ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript
JavaScript (), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of Website, websites use JavaScript on the Client (computing), client side for Web page, webpage behavior, often incorporating third-party Library (computing), libraries. All major Web browser, web browsers have a dedicated JavaScript engine to execute the Source code, code on User (computing), users' devices. JavaScript is a High-level programming language, high-level, often Just-in-time compilation, just-in-time compiled language that conforms to the ECMAScript standard. It has dynamic typing, Prototype-based programming, prototype-based object-oriented programming, object-orientation, and first-class functions. It is Programming paradigm, multi-paradigm, supporting Event-driven programming, event-driven, functional programming, functional, and imperative programming, imperative programming paradigm, programmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Object Storage
Object storage (also known as object-based storage) is a computer data storage that manages data as objects, as opposed to other storage architectures like file systems which manages data as a file hierarchy, and block storage which manages data as blocks within sectors and tracks. Each object typically includes the data itself, a variable amount of metadata, and a globally unique identifier. Object storage can be implemented at multiple levels, including the device level (object-storage device), the system level, and the interface level. In each case, object storage seeks to enable capabilities not addressed by other storage architectures, like interfaces that are directly programmable by the application, a namespace that can span multiple instances of physical hardware, and data-management functions like data replication and data distribution at object-level granularity. Object storage systems allow retention of massive amounts of unstructured data in which data is written once an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton (platform)
The Newton is a series of personal digital assistants (PDAs) developed and marketed by Apple Computer, Inc. An early device in the PDA category (the Newton originated the term), it was the first to feature handwriting recognition. Apple started developing the platform in 1987 and shipped the first devices in August 1993. Production officially ended on February 27, 1998. Newton devices ran on a proprietary operating system, Newton OS; examples include Apple's MessagePad series and the eMate 300, and other companies also released devices running on Newton OS. Most Newton devices were based on the ARM 610 RISC processor and all featured handwriting-based input. The Newton was considered technologically innovative at its debut, but a combination of factors, including its high price and early problems with its handwriting recognition feature, limited its sales. This led to Apple ultimately discontinuing the platform at the direction of Steve Jobs in 1998, a year after his return to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AppleEvents
Apple events are the message-based interprocess communication mechanism in Mac OS, first making an appearance in System 7 and supported by every version of the classic Mac OS since then and by macOS. Apple events describe "high-level" events such as "open document" or "print file", whereas earlier OSs had supported much more basic events, namely "click" and "keypress". Apple events form the basis of the Mac OS scripting system, the Open Scripting Architecture (the primary language of such being AppleScript). The starting point is a dynamically-typed, extensible descriptor format called an AEDesc, which is just an OSType code specifying the data type, together with a block of type-dependent data. For instance, the OSType code inte indicates that the data was a four-byte signed integer in big-endian format. Besides predefined type codes for various common simple types, there are two predefined structured descriptor types: an AERecord, which has data type reco (record), and AEList w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larry Tesler
Lawrence Gordon Tesler (April 24, 1945 – February 16, 2020) was an American computer scientist who worked in the field of human–computer interaction. Tesler worked at Xerox PARC, Apple, Amazon, and Yahoo! While at PARC, Tesler's work included Smalltalk, the first dynamic object-oriented programming language, and Gypsy, the first word processor with a graphical user interface (GUI) for the Xerox Alto. During this, along with colleague Tim Mott, Tesler developed the idea of copy and paste functionality and the idea of modeless software. While at Apple, Tesler worked on the Apple Lisa and the Apple Newton, and helped to develop Object Pascal and its use in application programming toolkits including MacApp. Biography Early career Tesler was born on April 24, 1945, in the Bronx in New York City, to Jewish parents Isidore, an anesthesiologist, and Muriel (). Tesler lived in the Bronx through his childhood and graduated from the Bronx High School of Science in 1961. While in high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Canfield Smith
David Canfield Smith is an American computer scientist best known for inventing computer icons and the programming technique known as programming by demonstration. His primary emphasis has been in the area of human–computer interaction (CHI) design. His goal was to make computers easier for ordinary people to use. He is one of the pioneers of the modern graphical user interfaces (GUI) for computers, having invented such techniques as the ''desktop metaphor'', dialog boxes, and universal commands. Personal life and influence Smith was born in Roanoke, Virginia on March 29, 1945. Smith graduated from Chillicothe (Ohio) High School in 1963 and was inducted into the Chillicothe High School Distinguished Alumni Hall of Fame in 2007 Oberlin College Smith attended Oberlin College, where he earned a Bachelor of Science degree with honors in mathematics in 1967. During his senior year, Smith realized he didn't want to pursue a career as a mathematics professor, which had been his goal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extension (Mac OS)
On the classic Mac OS (the original Apple Macintosh operating system), extensions were small pieces of code that extended the system's functionality. They were run initially at start-up time, and operated by a variety of mechanisms, including trap patching and other code modifying techniques. Initially an Apple developer hack, extensions became the standard way to provide a modular operating system. Large amounts of important system services such as the TCP/IP network stacks (MacTCP and Open Transport) and USB and FireWire support were optional components implemented as extensions. The phrase "system extension" later came to encompass faceless background applications as well. Extensions generally filled the same role as DOS's terminate and stay resident programs, or Unix's daemons, although by patching the underlying OS code, they had the capability to modify existing OS behaviour, the other two did not. The INIT mechanism The concept of extensions was not present in the origi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inter-process Communication
In computer science, inter-process communication or interprocess communication (IPC) refers specifically to the mechanisms an operating system provides to allow the processes to manage shared data. Typically, applications can use IPC, categorized as clients and servers, where the client requests data and the server responds to client requests. Many applications are both clients and servers, as commonly seen in distributed computing. IPC is very important to the design process for microkernels and nanokernels, which reduce the number of functionalities provided by the kernel. Those functionalities are then obtained by communicating with servers via IPC, leading to a large increase in communication when compared to a regular monolithic kernel. IPC interfaces generally encompass variable analytic framework structures. These processes ensure compatibility between the multi-vector protocols upon which IPC models rely. An IPC mechanism is either synchronous or asynchronous. Synchr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knowledge Engineering Environment
Knowledge Engineering Environment (KEE) is a Frame language, frame-based development tool for expert systems. It was developed and sold by IntelliCorp (software), IntelliCorp, and first released in 1983. It ran on Lisp machines, and was later ported to Lucid Common Lisp with the CLX (Common Lisp), CLX Library (computing), library, an X Window System (X11) interface for Common Lisp. This version was available on several different UNIX workstations. On KEE, several extensions were offered: * Simkit, a frame-based simulation library * KEEconnection, database connection between the frame system and relational databases In KEE, frames are called ''units''. Units are used for both individual instances and classes. Frames have ''slots'' and slots have ''facets''. Facets can describe, for example, a slot's expected values, its working value, or its inheritance rule. Slots can have multiple values. Behavior can be implemented using a message passing model. KEE provides an extensive graph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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