"instruction address register" meaning in English

{
  "etymology_text": "instruction address register < → δείτε τις λέξεις instruction, address και register",
  "forms": [
    {
      "form": "instruction address register"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Πληροφορική (αγγλικά)",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "ο μετρητής προγράμματος, που είναι ειδικός καταχωρητής (register) της CPU"
      ],
      "id": "el-instruction_address_register-en-noun-cVy6skAy",
      "raw_tags": [
        "πληροφορική"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "instruction counter"
    },
    {
      "word": "instruction pointer"
    },
    {
      "word": "program counter"
    }
  ],
  "word": "instruction address register"
}

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