Which of the following is a key benefit of associative memory using an…
2025
Which of the following is a key benefit of associative memory using an argument register?
- A.
Lower cost per bit
- B.
Larger capacity than RAM
- C.
Fast content-based data retrieval
- D.
Better for arithmetic processing
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Correct answer: C
Associative memory using an argument register provides parallel content-addressable search, enabling fast retrieval based on data content rather than address.
Note (for more understanding)
In computer architecture, Associative Memory (also known as Content-Addressable Memory or CAM) operates differently from traditional Random Access Memory (RAM). While RAM requires an address to read out a data word, associative memory takes a data word and searches the entire memory array simultaneously to see if that word exists.
The Role of the Argument Register:
To perform this high-speed parallel search, the hardware utilizes specialized registers:
Argument Register (A): Holds the specific data word or item that you are searching for.
Key Register (K): Acts as a mask to select specific fields or bits within the Argument Register if you only want to perform a partial match.
When an argument is placed in the Argument Register, the hardware activates internal match logic at every memory word position. The entire memory is scanned in parallel in one clock cycle. This eliminates the need for sequential search loops or hashing algorithms, making fast content-based data retrieval the ultimate advantage of this design.