The world wide web is like a global filing system that runs on the internet. Each entry in this filing system is a website, which can consist of many webpages. Each webpage brings code, text, and multimedia files together. Hyperlinks are special interconnections between webpages that help users navigate through the world wide web.…
The Java programming language was developed by Canadian computer scientist James Gosling (b. 1955) for the American computer company Sun Microsystem’s Java platform – a collection of software designed to allow programmers to develop a variety of systems. These ranged from tiny applications hosted on smartcards for personal banking, to large systems designed for use by many people across an organization.…
In 1979, Danish programmer Bjarne Stroustrup (b. 1950) started working at Bell Labs. He had previously worked using Simula67, considered to be the first object-oriented programming language. Simula67 had been designed to let people model real-world systems easily, but Stroustrup found it quite slow.…
This article discusses the advantages and disadvantages of two out of many different programming styles, structured and object-oriented programming.
Today, computers use many sorts of programming languages. A programming language is a set of instructions that instruct the central processing unit (CPU) inside a computer to accomplish and perform a specifically defined task.…
BASIC’s popularity really took off in the 1970s and 1980s, when home computers first became available. Most machines came with a version of BASIC, which became many people’s introduction to programming. The syntax of the language was straightforward and easy to learn, and allowed people to write software to help them in their businesses, or as a hobby.…
In 1945, computers filled entire rooms and produced a lot of heat that attracted bugs, which crawled inside the machines and caused short circuits. On 9 September 1945, American computer scientist Grace Hopper (1906–1992) found that a moth had caused a malfunction in the Harvard Mark II computer, and she taped the moth into the computer’s log book.…
An influential mathematician, George Boole (1815–1864) didn’t have much access to formal education and was mostly self-taught. He invented Boolean logic as a systematic, mathematical approach to ancient Greek philosopher Aristotle’s theory of categorical logic – rules used to determine if a statement is true or false.…
In 1928, American company IBM redesigned the punch card to have 80 columns of 12 potential holes. A light shone on each card as it was fed into the computer. If there was no hole, the light was blocked and the machine read in a 0.…
Most people find binary numbers difficult to work with. The hexadecimal system is based on multiples of 16 and uses the digits 0 to 9 followed by the letters A to F. A 24-bit binary number defining a colour can be written as six hexadecimal digits, making life easier for
programmers.…
