The first RAM integrated circuits became available in 1972 at 1 cent per bit, quickly making magnetic core memory obsolete.

第一个 RAM 集成电路于 1972 年以每位 1 美分的价格面世，很快就使磁芯存储器过时了。

While great for storage, this was not nearly fast enough for memory, so the RAMAC 305 also had drum memory and magnetic core memory.

虽然这对于存储来说非常好，但对于内存来说速度还不够快，因此 RAMAC 305 还具有磁鼓内存和磁芯内存。

This was a killer feature, and magnetic core memory became the predominant Random Access Memory technology for two decades, beginning in the mid 1950s even though it was typically woven by hand!

这是一个杀手级功能，从 1950 年代中期开始，磁芯存储器成为主导的随机存取存储器技术长达 20 年之久，尽管它通常是手工编织的！

However, delay line memory was largely obsolete by the mid 1950s, surpassed in performance, reliability and cost by a new kid on the block: magnetic core memory which was constructed out of little magnetic donuts, called cores.

然而，延迟线存储器在 20 世纪 50 年代中期已经基本过时，在性能、可靠性和成本方面被一个新产品超越：磁芯存储器， 它由称为磁芯的小磁性甜甜圈构成。