"keyscan" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "key",
        "3": "scan"
      },
      "expansion": "key + scan",
      "name": "com"
    }
  ],
  "etymology_text": "From key + scan.",
  "forms": [
    {
      "form": "keyscans",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "keyscan (plural keyscans)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
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          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1986, Commodore 128: Programmer's Reference Guide, page 421:",
          "text": "There are two indirect RAM jumps encountered during a keyscan: […]",
          "type": "quote"
        },
        {
          "ref": "1993, Thomas W. Schultz, C and the 8051: Programming for Multitasking, page 182:",
          "text": "So, a keyscan routine that repeated every 100mSec would probably meet the requirement of fast enough.",
          "type": "quote"
        },
        {
          "ref": "2000, Walter A. Triebel, Avtar Singh, The 8088 and 8086 Microprocessors: Programming, Interfacing, Software, Hardware, and Applications, page 639:",
          "text": "The keyboard of the PC generates a keyscan code whenever one of its keys is depressed",
          "type": "quote"
        }
      ],
      "glosses": [
        "The process of scanning the state of a keyboard to determine which keys are being pressed."
      ],
      "id": "en-keyscan-en-noun-ggdN4uYP",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "scan",
          "scan"
        ],
        [
          "state",
          "state"
        ],
        [
          "keyboard",
          "keyboard"
        ],
        [
          "key",
          "key"
        ]
      ],
      "raw_glosses": [
        "(computing) The process of scanning the state of a keyboard to determine which keys are being pressed."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "keyscan"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "key",
        "3": "scan"
      },
      "expansion": "key + scan",
      "name": "com"
    }
  ],
  "etymology_text": "From key + scan.",
  "forms": [
    {
      "form": "keyscans",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "keyscan (plural keyscans)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Computing"
      ],
      "examples": [
        {
          "ref": "1986, Commodore 128: Programmer's Reference Guide, page 421:",
          "text": "There are two indirect RAM jumps encountered during a keyscan: […]",
          "type": "quote"
        },
        {
          "ref": "1993, Thomas W. Schultz, C and the 8051: Programming for Multitasking, page 182:",
          "text": "So, a keyscan routine that repeated every 100mSec would probably meet the requirement of fast enough.",
          "type": "quote"
        },
        {
          "ref": "2000, Walter A. Triebel, Avtar Singh, The 8088 and 8086 Microprocessors: Programming, Interfacing, Software, Hardware, and Applications, page 639:",
          "text": "The keyboard of the PC generates a keyscan code whenever one of its keys is depressed",
          "type": "quote"
        }
      ],
      "glosses": [
        "The process of scanning the state of a keyboard to determine which keys are being pressed."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "scan",
          "scan"
        ],
        [
          "state",
          "state"
        ],
        [
          "keyboard",
          "keyboard"
        ],
        [
          "key",
          "key"
        ]
      ],
      "raw_glosses": [
        "(computing) The process of scanning the state of a keyboard to determine which keys are being pressed."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "keyscan"
}