science

ITF-6

ITF-6 is a 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 ITF-6 rather than just read about it. In short: ITF-6 is the implementation of an Interleaved 2 of 5 (ITF) barcode to encode an addon to ITF-14 and ITF-16 barcodes. Originally was developed as a part of JIS specification for Physical Distribution Center.

Key takeaways

ITF-6 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect ITF-6 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of ITF-6 from memory before moving on to harder problems.

Reference excerpt

ITF-6 is the implementation of an Interleaved 2 of 5 (ITF) barcode to encode an addon to ITF-14 and ITF-16 barcodes. Originally was developed as a part of JIS specification for Physical Distribution Center. Instead of ITF-14, it wasn't standardized by ISO Committee but it is widely used to encode additional data to Global Trade Item Number such as items quantity or container weight.

History In 1983, the Logistics Symbol Committee proposed the Interleaved 2 of 5 barcode as a method to improve the JAN code. In 1985, a logistics symbol JIS drafting committee was set up at the Distribution System Development Center, and the final examination was started toward JIS. Then in 1987 it was standardized as JIS-X-0502, a standard physical distribution barcode symbol ITF-14/16/6. The ITF barcode has an add-on version for displaying the weight, etc., and it is possible to encode a 5-digits numerical value and 6-th check character as ITF-6 after ITF-14 or ITF-16(obsolete in 2010). Currently ITF-6 isn't standardized by ISO Committee and it is used only as a part of JIS standards. However, it is widely used by manufacturers to encode additional data and it is supported by wide range of barcode scanners

Uses Despite the fact that ITF-6 barcode isn't included into ISO standards, it is widely used as add-on to encode items quantity in package or item weight. At this time, it is used only with ITF-14 (Global Trade Item Number), but up to 2010 it was used with standardized only in Japan ITF-16 (Extended Symbology for Physical Distribution). From the left, ITF-6 contains 5 significant digits and the last one is control digit, which is calculated same way as UPC checksums. If a decimal point is required, the decimal point is between the 3rd and 4th digits: NNNNN(C/D) - without decimal point; NNN.NN(C/D) - with decimal point. ITF-6 is supported by various barcode generating software and barcode scanners.

Checksum Checksum is calculated as other UPC checksums:

x 6 = 10 − ( ( 3 x 1 + x 2 + 3 x 3 + x 4 + 3 x 5 ) ( mod 10 ) ) {\displaystyle x_{6}=10-((3x_{1}+x_{2}+3x_{3}+x_{4}+3x_{5}){\pmod {10}})}

Example for the first 5 digits 12345: 10 - ((3*1 + 2 + 3*3 + 4 + 3*5) mod 10) = 7. Check digit is 7.

See also Automated identification and data capture (AIDC) Barcode Global Trade Item Number ITF-14 Interleaved 2 of 5 Japanese Industrial Standards

References

External links Free ITF-6 generator JISX0502:1994 (in Japanese) Standard Symbology for Physical Distribution

Illustrations

Worked examples

Example 1 — a first encounter with ITF-6

Start with the simplest possible case. Write down what ITF-6 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 ITF-6 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 ITF-6 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 ITF-6

In research: ITF-6 appears in 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 ITF-6 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: ITF-6 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Automatic identification and data capture, Barcodes, Encodings, so understanding it makes those chapters shorter.
In everyday life: Look for ITF-6 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.

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How to study ITF-6 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what ITF-6 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain ITF-6 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is ITF-6 in simple terms?

Why does ITF-6 matter?

Because it connects several 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 ITF-6?

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 ITF-6.