ArticleslgStudy

computer science

Programmer

Programmer is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Programmer rather than just read about it. In short: A programmer, computer programmer or coder is an author of computer source code, or someone with skill in computer programming. The professional titles software developer and software engineer may be used for jobs that require a programmer.

Programmer — main illustration
Programmer — illustration

Key takeaways

  • Programmer belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Programmer to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Programmer from memory before moving on to harder problems.

Reference excerpt

A programmer, computer programmer or coder is an author of computer source code, or someone with skill in computer programming. The professional titles software developer and software engineer may be used for jobs that require a programmer.

Job title A software developer primarily implements software based on specifications and fixes bugs. Other duties may include reviewing code changes and testing. To achieve the required skills for the job, they might obtain a computer science or associate degree, attend a programming boot camp or be self-taught. A software engineer usually is responsible for the same tasks as a developer plus broader responsibilities of software engineering including architecting and designing new features and applications, targeting new platforms, managing the software development lifecycle (design, implementation, testing, and deployment), leading a team of programmers, communicating with customers, managers and other engineers, considering system stability and quality, and exploring software development methodologies. Sometimes, a software engineer is required to have a degree in software engineering, computer engineering, or computer science. Some countries legally require an engineering degree to be called engineer.

History

British countess and mathematician Ada Lovelace is often considered to be the first computer programmer. She authored an algorithm for calculating Bernoulli numbers on the Charles Babbage analytical engine, which was published in October 1942. As the machine was not completed in her lifetime, she never experienced the algorithm in action. In 1941, German civil engineer Konrad Zuse was the first person to execute a program on a working, program-controlled, electronic computer. From 1943 to 1945, per computer scientist Wolfgang K. Giloi and AI professor Raúl Rojas et al., Zuse created the first, high-level programming language, Plankalkül. Members of the 1945 ENIAC programming team of Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas and Ruth Lichterman have since been credited as the first professional computer programmers.

The software industry

The first company founded specifically to provide software products and services was the Computer Usage Company in 1955. Before that time, computers were programmed either by customers or the few commercial computer manufacturers of the time, such as Sperry Rand and IBM. The software industry expanded in the early 1960s, almost immediately after computers were first sold in mass-produced quantities. Universities, governments, and businesses created a demand for software. Many of these programs were written in-house by full-time staff programmers; some were distributed between users of a particular machine for no charge, while others were sold on a commercial basis. Other firms, such as Computer Sciences Corporation (founded in 1959), also started to grow. Computer manufacturers soon started bundling operating systems, system software and programming environments with their machines; the IBM 1620 came with the 1620 Symbolic Programming System and FORTRAN. The industry expanded greatly with the rise of the personal computer (PC) in the mid-1970s, which brought computing to the average office worker. In the following years, the PC also helped create a constantly growing market for games, applications and utility software.

Nature of the work

Computer programmers write, test, debug, and maintain the detailed instructions, called computer programs, that computers must follow to perform their functions. Programmers also conceive, design, and test logical structures for solving problems by computer. Many technical innovations in programming — advanced computing technologies and sophisticated new languages and programming tools — have redefined the role of a programmer and elevated much of the programming work done today. Job titles and descriptions may vary, depending on the organization. Programmers work in many settings, including corporate information technology (IT) departments, big software companies, small service firms and government entities of all sizes. Many professional programmers also work for consulting companies at client sites as contractors. Licensing is not typically required to work as a programmer, although professional certifications are commonly held by programmers. Programming is considered a profession.

Types of software Programming editors, also known as source code editors, are text editors that are specifically designed for programmers or developers to write the source code of an application or a program. Most of these editors include features useful for programmers, which may include color syntax highlighting, auto indentation, auto-complete, bracket matching, syntax check, and allows plug-ins. These features aid the users during coding, debugging and testing.

Globalization

Market changes in the UK According to BBC News, 17% of computer science students could not find work in their field six months after graduation in 2009 which was the highest rate of the university subjects surveyed while 0% of medical students were unemployed in the same survey.

… excerpt ends here. Continue reading the full article.

Illustrations

Programmer illustration
Programmer: Ada Lovelace is considered by many to be the first computer programmer.[4]
Ada Lovelace is considered by many to be the first computer programmer.[4]
Programmer: Programmer at work
Programmer at work
Programmer: GitHub Codespaces is an online integrated development environment that requires minimal setup to get started programming.
GitHub Codespaces is an online integrated development environment that requires minimal setup to get started programming.

Worked examples

Example 1 — a first encounter with Programmer

Start with the simplest possible case. Write down what Programmer claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Programmer before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Programmer ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Programmer

In research
Programmer appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Programmer in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Programmer is common in secondary-school and first-year university syllabi. It links to neighbouring topics Information technology, Information technology occupations, Software industry, so understanding it makes those chapters shorter.
In everyday life
Look for Programmer outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Programmer in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Programmer means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Programmer out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Programmer in simple terms?

A programmer, computer programmer or coder is an author of computer source code, or someone with skill in computer programming. The professional titles software developer and software engineer may be used for jobs that require a programmer.

Why does Programmer matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Programmer?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Programmer.

Tags

  • Information technology
  • Information technology occupations
  • Software industry

Keep exploring