What is a Program?

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Article Summary

A set of instructions that directs a computer's hardware to perform a task is called a program, or software program that processes input, manipulates data, and outputs a result. In computing, a program is a specific set of ordered operations for a computer to perform. In the modern computer that John von Neumann outlined in 1945, the program contains a one-at-a-time sequence of instructions that...

Key Takeaways

  • This article explains Types of Programs in simple medical language.
  • This article explains Apps vs. programs in simple medical language.
  • This article explains Programs vs. scripts in simple medical language.
  • This article explains Commands vs. programs in simple medical language.
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Definition

A set of instructions that directs a computer’s hardware to perform a task is called a program, or software program that processes input, manipulates data, and outputs a result. In computing, a program is a specific set of ordered operations for a computer to perform. In the modern computer that John von Neumann outlined in 1945, the program contains a one-at-a-time sequence of instructions that the computer follows. Typically, the program is put into a storage area accessible to the computer. A computer program is a set of instructions that is used as a process of creating a software program by using a programming language. Software is a set of programs that enables the hardware to perform a specific task. Programs do not have further categorization.

A computer program is a set of instructions and as a term, it can be used as a verb as well as a noun. In terms of a verb, it is used as a process of creating a software program by using a programming language. In terms of a noun, an application, program, or application software is used to perform a specific task on the computer. For example, Microsoft PowerPoint is an application, which provides a way to create documents related to the presentation. Furthermore, a browser is also an application, which allows us to browse any website.

Types of Programs

There are two categories of programs. Application programs (usually called just “applications”) are programs that people use to get their work done. Computers exist because people want to run these programs. Systems programs keep all the hardware and software running together smoothly. The difference between “application program” and “system program” is fuzzy. Often it is more a matter of marketing than of logic.

Application Programs Systems Programs
  • Word processors
  • Game programs
  • Spreadsheets
  • Data base systems
  • Graphics programs
  • Web browsers
  • Operating system.
  • Networking system.
  • Database system.
  • Programming language software.
  • Web site server.
  • Data backup.

The most important systems program is the operating system. The operating system is always present when the computer is running. It coordinates the operation of all the hardware and software components of the computer system. The operating system is responsible for starting application programs running and finding the resources that they need. When an application program is running, the operating system manages the details of the hardware for it. For example, when you type characters on the keyboard, the operating system determines which application program they are intended for and does the work of getting them there.

Modern operating systems usually come with a user interface that enables users to easily interact with application programs (and with the operating system itself) by using windows, buttons, menus, icons, the mouse, and the keyboard. Examples of operating systems are Unix, Windows 98, Windows NT, Linux, Solaris, and System 7.

Difference between Applications and programs

All applications can be called a program, but a program cannot be an application. An application is a collection of programs that are designed to help the end-users to achieve a purpose. These programs communicate with each other to perform tasks or activities. It cannot exist without a program and functions to carry out end-user commands. Whereas, a program is a collection of instructions that describes the computer what task to perform.

What is the purpose of a program?

The program enables the computer to perform a particular operation. Without application software (programs), a computer can operate with the operating system, but it cannot perform any specific task. For example, if you want to create a Word document, you have to install Microsoft Word on your computer. It is a program or application software that instructs the computer on how to create, edit, and save a document or a file.

Basic functions of a program

The function of a program depends upon the type of program. For example, the function of the Microsoft Excel program is to create, edit, and view documents related to calculation and data analysis, etc. The function of an internet browser is to find information on the World Wide Web and display it on the screen. A program is designed to execute a particular task or function. For example, an Excel program can create a document, but it cannot find the information on the World Wide Web like a browser

What was the first program?

Tom Kilburn wrote the first software program to hold in electronic memory. It was successfully executed at the University of Manchester, England, on 21 June 1948. This program was computed as the greatest factor of the integer 218 = 262,144. The computer was called the mall Scale Experimental Machine (SSM), which was known as the Manchester Baby.  This occurrence is considered the birth of the first software.

Examples of computer programs

Today, there are various types of programs available for mobile phones, computers, and other devices. The below table contains some examples of programs with their category and brief description.

Programming functions are like the machines in our factory. Each does a specific job, and may have parameters, or inputs, and produce some return values, or outputs. We’ll talk about these more in the next few steps. You will have used some functions already, perhaps without even knowing about it.

Program Category Description
Google Chrome Internet Browser It is an internet browser that was introduced by Google on 11 December 2008. It is used to retrieve the information available on the World Wide Web and display it on the device screen. It provides various types of features to help the users, such as tabbed browsing, synchronization with Google services and accounts, spell check, and automatic translation of web pages. Additionally, it has a search bar or Omnibox, which allows users to search for any query.
C Programming Language It is a general-purpose programming language, which is used to develop the software. It was released in 1972 after it was developed at Bell Labs by Dennis Ritchie. It is widely used for writing complex programs such as Python, Git, Oracle database, etc.
Furthermore, it includes more features such as simplicity and efficiency, portability, rich library, extensible, high-speed, and more.
Skype Chat and VoIP Skype is a program that allows users to chat and make VOIP (voice over internet protocol) calls anywhere in the World. A Skype user can call for free to another Skype user anywhere in the world.
Adobe Photoshop Photo Editor It is an image editing program, that runs on macOS or Windows computers. It supports all types of file formats as well as JPEG, Targa, GIF, BMP, HEIF, etc. It provides users with many tools to create, edit, and enhance the quality of an image, including a real-life painting, creating an animated GIF from an image, or short video files.
Microsoft Word Word processor It is a word processor program. It was developed by Charles Simonyi and Richard Brodie, and published by Microsoft. It was introduced on 25 October 1983. You can use the Word program on Microsoft Windows, Android, Apple iOS, and Apple macOS. Furthermore, it can also be run on the Linux OS with the help of WINE.
FileZilla FTP FileZilla is an open-source software program that allows users to transfer files from a local computer to a remote computer. It is usable as a client version as well as a server version. It includes more features, including important features such as Transfer Queue, Site Manager, File, Folder View, and Directory Comparison.
Microsoft Excel Spreadsheet It is a software program, which provides a spreadsheet to create documents related to calculation, data analysis, and more. It is developed by Microsoft on 30 September 1985. When it was in the developing phase, its code name was Odyssey. If you want to create a monthly budget report, salary sheet, Bill order, and more, you can use the Microsoft Excel program.
Microsoft PowerPoint Presentation It is a part of Microsoft Office that is bundled with Microsoft Word and Excel. It is used to create a presentation by creating different types of slides. It is widely used in school and business presentations. For example, if you want to create a presentation of your document to show at your college or any organization, you can use the Microsoft PowerPoint program.
Mozilla Thunderbird E-mail client It is an open-source e-mail client that allows users to send, receive, and manage their e-mail on Microsoft Windows, Linux, macOS, and other supported systems. It provides users the option to retrieve e-mail from their e-mail provider with the help of IMAP or POP3, and users can send an e-mail by using the Simple Mail Transfer Protocol (SMTP).
Norton Anti-Virus Antivirus It is an anti-virus software product that is developed for computer security by Symantec Corporation in 1991. It uses heuristics and signatures to detect viruses. Furthermore, it is distributed by Symantec as a download, copy, box, and OEM software.
Audacity Audio software It is an open-source software program, which enables users to record sound, including editing sound clips. It can run on the macOS, Linux, and Windows operating systems. It is available for free to use as per the General Public License (GPL).
Adobe Acrobat PDF reader It is an application software introduced by Adobe, which is used to create, view, manage, print, and manipulate files in PDF (Portable Document Format).
Comm Central Fax/Voice/Phone It is a program, which enables users to receive faxes, including receiving voicemails on their personal computers.
Adobe Dreamweaver HTML editor It is a software program that is used to design web pages and was released by Macromedia in 1997. It is a full-fledged HTML and programming editor, which offers users a WYSIWYG (what you see is what you get) user interface to create and edit web pages. It supports HTML, CSS, JavaScript, and XML as well as human languages such as English, French, Spanish, Chinese, Japanese, Russian, etc.

Apps vs. programs

When Apple introduced the iPhone, they popularized the term “app,” but an app (application) and program are the same things. Today, most people think of an “app” as an application on an Apple computer, smartphone, or tablet. A program is thought of as something that runs on a computer (e.g., a Windows computer).

TipWith all the different ways companies and people use these terms, it’s best to think of an application, app, and program as the same thing. See our app page for further information on mobile apps.

Programs vs. scripts

When a program is created, it’s compiled into a language that the computer can understand. Once compiled, the program does not need any other programs to run as long as the computer has the required operating system and platform. A script is not compiled and needs an interpreter to translate the script into something the computer understands. Without an interpreter, the script cannot run on the computer. However, once installed, a script can run on any platform without needing to be re-written. See our script term for further information and the pros and cons of scripts.

Commands vs. programs

A command is an instruction that is given to a program or operating system to act. See our command page for further information.

What type of files are program files?

A program file must be an executable file and software programs running Microsoft Windows end with a file extension. EXE, C OM, or.PIF. Executing these files runs the program and allows it to be used on the computer. On an Apple Macintosh computer, a program ends with.APP.

Examples of computer programs

There are millions of different programs available for computers, phones, and other devices today. Below are a few examples and the related program category.

TipIf you visit the program category page, you can see other examples of programs in that category.

Program Program Category
Adobe Acrobat PDF reader
Adobe After Effects Video editor
Adobe Dreamweaver HTML editor
Adobe Photoshop Photo editor
Audacity Audio software
Comm Central Fax/Voice/Phone
FileZilla FTP
Google Chrome Internet Browser
Hyper Terminal Terminal program
Microsoft Excel Spreadsheet
Microsoft PowerPoint Presentation
Microsoft Word Word processor
Mozilla Thunderbird E-mail client
Norton Anti-Virus Antivirus
C++ Programming language
Skype Chat and VoIP
  • See our software page for information on software that is considered a program and software that is a different category.

What is the purpose of a program?

Without application software (programs), your computer would be able to operate with the operating system (system software), but would not be capable of doing anything else. A program gives the computer and user the ability to perform specific tasks. For example, to browse the Internet, you would install a browser on the computer. A browser is a program that instructs the computer on how to visit, display and navigate a web page. Without a browser program, the computer would not be able to browse the Internet.

What are the basic functions of a program?

The functions of a program vary depending on the type of program. For example, the function of a browser program is to browse the Internet. The function of a word processor is to create, view, and edit documents. A program is usually designed to perform a specific task (function), and only that task. In other words, a word processor program can create a document, but it cannot be used to browse the Internet.

TipSee our program examples for a list of different types of programs and program categories.

NoteToday, with cloud computing and online services, it may be confusing to know how to define a service, such as Google Docs. Google Docs is a word processor, but it primarily runs through the browser and therefore is considered a web-based application, not a program.

Are game programs?

Yes, games are programs, but may be labeled as “games” and not “programs,” to distinguish them as designed for leisure rather than productivity. As a category of programs, games have subcategories of their own, such as FPS, MMO, and RPG. For example, Quake is an “FPS game.”

Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Rest, drink safe water, and observe symptoms carefully.
  • Keep a written note of symptoms, duration, temperature, medicines already taken, and allergy history.
  • Seek medical care quickly if symptoms are severe, worsening, or unusual for the patient.

OTC medicine safety

  • For mild pain or fever, ask a registered pharmacist or doctor before using common over-the-counter pain/fever medicines.
  • Do not combine multiple pain medicines without advice, especially if you have kidney disease, liver disease, stomach ulcer, asthma, pregnancy, or take blood thinners.
  • Do not give adult medicines to children unless a qualified clinician advises it.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Severe symptoms, confusion, fainting, breathing difficulty, chest pain, severe dehydration, or sudden weakness need urgent medical care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: What is a Program?

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

Internal learning pathway

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