"program counter" meaning in English

{
  "etymology_text": "program counter < → δείτε τις λέξεις program και counter",
  "forms": [
    {
      "form": "program counter",
      "source": "header"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Πληροφορική (αγγλικά)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Συντομογραφία: PC"
        }
      ],
      "glosses": [
        "ο μετρητής προγράμματος, είναι ειδικός καταχωρητής (register) της CPU"
      ],
      "id": "el-program_counter-en-noun-aU1b1cyO",
      "raw_tags": [
        "πληροφορική"
      ],
      "topics": [
        "computing"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "instruction address register"
    },
    {
      "word": "instruction counter"
    },
    {
      "word": "instruction pointer"
    }
  ],
  "word": "program counter"
}

{
  "etymology_text": "program counter < → δείτε τις λέξεις program και counter",
  "forms": [
    {
      "form": "program counter",
      "source": "header"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Πληροφορική (αγγλικά)"
      ],
      "examples": [
        {
          "text": "Συντομογραφία: PC"
        }
      ],
      "glosses": [
        "ο μετρητής προγράμματος, είναι ειδικός καταχωρητής (register) της CPU"
      ],
      "raw_tags": [
        "πληροφορική"
      ],
      "topics": [
        "computing"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "instruction address register"
    },
    {
      "word": "instruction counter"
    },
    {
      "word": "instruction pointer"
    }
  ],
  "word": "program counter"
}