Lesson plan
Dc (computer program)
dc (desk calculator) is a cross-platform reverse-Polish calculator which supports arbitrary-precision arithmetic. It was written by Lorinda Cherry and Robert Morris at Bell Labs. dc is one of the oldest Unix utilities, preceding even the development of the C programming language. Like other utilities of that vintage, it has a powerful set of features but terse syntax. Although the bc calculator program (which uses infix notation) was traditionally implemented on top of dc, the modern GNU implementation of dc bases off of bc.
Article summary
dc (desk calculator) is a cross-platform reverse-Polish calculator which supports arbitrary-precision arithmetic. It was written by Lorinda Cherry and Robert Morris at Bell Labs. dc is one of the oldest Unix utilities, preceding even the development of the C programming language. Like other utilities of that vintage, it has a powerful set of features but terse syntax. Although the bc calculator program (which uses infix notation) was traditionally implemented on top of dc, the modern GNU implementation of dc bases off of bc.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.