Which of the following is NOT a characteristic of ECC memory?

ECC memory, which stands for Error-Correcting Code memory, is designed to enhance the reliability of data stored in computer memory by detecting and correcting errors. One of the key characteristics of ECC memory is its ability to detect single-bit errors, which is pivotal for maintaining data integrity.

However, while ECC memory can correct single-bit errors, it cannot correct multi-bit errors. This limitation is significant because, in the context of reliability and error correction, the capability to handle more than one bit of error in concurrent states is beyond the standard functionality of ECC memory. Therefore, stating that ECC memory corrects multi-bit errors is inaccurate.

System stability is indeed improved with the use of ECC memory, as it helps in preventing data corruption that could lead to system crashes or unpredictable behaviors. Additionally, ECC memory is generally more expensive than non-ECC memory due to the extra hardware and complexity involved in error checking and correction processes.

These characteristics collectively highlight the specificity of ECC memory in managing single-bit errors, enhancing system stability, and the associated costs when compared to standard memory types.