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Electronic data processing (EDP) is the use of electronic equipment, especially computers, to handle, manipulate, calculate, record, or present data for a defined purpose. The term describes a category of work rather than a single machine, program, or product. Its main value today is in reading older texts, where it marks computer-based work as distinct from manual clerical work.
What the term means
UNESCO’s controlled vocabulary lists “Electronic data processing” as an entry term under “Data processing.” Its scope note defines data processing as the systematic handling, manipulation, and computation of data, always involving the use of computers, and it adds a warning: “Do not confuse with ‘information processing’.” That scope note is the most authoritative concise definition available for the term, and it sets the boundaries used in this article.
The phrase is also reflected in ISO 2382-1:1974, which gives the formulation “Data processing largely performed by electronic devices.” The copy available for this article is a secondary transcription rather than an inspected official ISO publication, so it is best used to show how the term was framed in the 1970s, not as a current standards reference.
How EDP works in practice
EDP describes a sequence that is repeated in most computer-based data work. The exact steps depend on the task, but the general pattern is:
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- Input. Data is gathered or entered, for example from a sales transaction, a time card, or a meter reading.
- Manipulation or calculation. The equipment organizes or changes the data and performs operations on it, such as adding up hours, applying tax, or sorting records.
- Recording. Results and updated records are stored so they can be retrieved later.
- Output. The results are presented in a usable form, such as a printed bill, a payroll register, or a summary report.
Cambridge Dictionary describes the concept in plain terms as using computers to record and process data. TechTarget’s overview of the subject uses business examples such as payroll and billing, which are classic EDP workloads: large volumes of similar records, processed according to fixed rules, with output needed on a regular schedule.
EDP compared with manual processing
The historical contrast that gave the term its meaning is between electronic equipment and manual clerical procedures. The table below sets out the points that matter for that comparison. It describes how the two approaches differ in kind; it does not measure speed or accuracy, because the sources used here do not provide quantified performance figures.
| Aspect | Manual clerical processing | Electronic data processing |
|---|---|---|
| Who or what performs the operations | People following written procedures | Electronic equipment, especially computers, following stored instructions |
| Consistency across repeated operations | Depends on each worker applying the same procedure | The same rules are applied each time the operation runs |
| Typical input | Paper documents, ledgers, and forms handled by hand | Data entered or captured into a machine-readable form |
| Typical output | Hand-prepared records and typed or written reports | Printed or stored results generated by the system |
| Typical examples | Hand-kept payroll ledgers, manual billing | Automated payroll runs, computer-generated bills and reports |
Terms that are often confused with EDP
Data processing
Data processing is the broader activity of performing operations on data to reach a result. EDP is a narrower historical label for data processing carried out largely by electronic devices. In modern writing, “data processing” is the usual term, and it does not require the word “electronic” to carry the same meaning.
Information processing
Information processing is related but is not a synonym. UNESCO’s warning against confusing the two is worth keeping in mind: data is the raw material that is handled and calculated, while information is the meaning a person takes from the results. A system can process data without any particular information being delivered to anyone, so the two terms should not be swapped casually.
EDP system
An “EDP system” usually refers to the combination of computer equipment and the procedures used to process data, rather than to one isolated calculation. The phrase appears mainly in business and administrative writing from the mid-20th century. When you meet it in an older document, read it as the organization’s computer-based processing arrangement for that period.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where the term came from and why it faded
The Computer History Museum hosts a 1962 glossary that records EDP as an abbreviation for Electronic Data Processing and refers readers to the electronic-data-processing entry. That makes it a useful dated example of how the term was used at the time. Its prominence declined as computer-based processing became routine. Today the work is usually described as data processing, computing, or information systems work, and “EDP” survives mostly in historical texts and in the names of older departments.
Quick Recap
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Reading EDP in older documents
- Check the date of the document. The term is most common in writing from the mid-20th century.
- Treat “EDP” as a description of the work, not the name of a particular computer, language, or software package.
- Where the text says “EDP department” or “EDP system,” read it as the group or arrangement responsible for computer-based processing.
- Where the text uses “information” and “data” side by side, keep them separate, following the distinction described above.
- When writing today, prefer “data processing” or “computer processing” unless the historical label is the point of the discussion.
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