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Easter Egg Easter egg (slang) a hidden part of a computer program. Easter eggs are usually activated only by a bizarre series of actions—then the user is treated to an amusing presentation that usually includes the names of the development team. The actions necessary to see an egg are very complex and would never be [...]

Elevator Development before the Tower While power-driven hoists and elevators in many forms had been used since the early years of the 19th century, the ever-present possibility of breakage of the hoisting rope restricted their use almost entirely to the handling of goods in mills and warehouses.[3] Not until the invention of a device which [...]

The 40 Styles of Chairs There are 40 distinct styles of chairs embracing the period from 3000 B.C. to 1900 A.D.—nearly 7,000 years. Of all the millions of chairs made during the centuries, each one can be classified under one or more of the 40 general styles shown in the chart. This chart was compiled [...]

Student and Apprentice, their Aims and Conditions of Work—Necessity for some Equality between Theory and Practise—The Student’s Opportunity lies on the Side of Design. The study of some form of handicraft has of late years become an important element in the training of an art student. It is with the object of assisting such with [...]

The female head-dress consisted chiefly of flowing hair banded with a circlet of various shapes, but a development of braiding plaits is found very early, and the hair was probably arranged so before the Roman era. These plaits were generally brought over the shoulder to the front, the hair being parted in the centre, thus [...]

Crashaw must have suffered greatly just at that time; and the anticipation of his defeat by the Committee was made still more bitter by the wonderful visit of Herr Grossmann. It is true that that visit feebly helped Crashaw’s cause at the moment by further enlisting the sympathies and strenuous endeavour of the Nonconformist Purvis; [...]

What is PHP? PHP stands for “PHP: Hypertext Preprocessor”. It is a server-side scripting language. PHP scripts are executed on the server and it is especially suited for Web development and can be embedded into HTML. The main goal of the language is to allow web developers to write dynamically generated web pages quickly. Its [...]

Ada is a HUGE language and we have looked at may be only 25-30% of this language. It is to be remembered that the main objective of the Ada design was to incorporate the contemporary software engineering knowledge in it. In general, software development time is: 10% design, 10% coding, 60% debug and 20% test. [...]

Dynamic typing Mixing arithmetic and string operations String operations including concatenation GOTO control structure Overloaded operators Space as an operator Run-time compilation code can be embedded in data, allowing easy run-time extension of programs Variable length string Array tables and record type objects Absence of declaration Operator overloading. Issues Developers of SNOBOL had no or [...]

Over the last five decades, programming languages have evolved after going through several phases. These phases are briefly described below: 1950’s – Discovery and description of programming language concepts Programming language design in this period took an empirical approach. Programming languages were regarded solely as tools for facilitating the specification of programs rather than as [...]