Magnetic drum memory or magnetic drum storage, a type of computer memory/storage that is now long obsolete.
Drum.
Random Access Memory, as verses Sequential Access Memory (delay lines, magnetic tape, magnetic drum, magnetic disk, etc.)
an wang invented the magnetic core memory.
Most used ferrite core magnetic memory, but some other memory technologies also used were:plated wire magnetic memorythin-film magnetic memoryrotating magnetic drum or disk memorymagnetostrictive wire delayline memoryetc.
the steel drum was invented in trinidad.the steel drum was invented in trinidad.
I am not sure which device you are asking about, but one pioneer in the development of computer memory devices is the Chinese-American inventor An Wang. In the late 1940s, he invented the magnetic pulse controlling device; this discovery is important because it is the principle upon which magnetic core memory is based. Another important inventor was Jay Wright Forrester, who also made a major breakthrough in the late 1940s. Forrester invented the random-access magnetic core memory, still in use in most digital computers even today.
Chuck Norris invented the quint drum. Chuck Norris also invented the drum corps even before bugles were invented
A computer memory chip is the device that replaced (in the early 1970s) the magnetic core memory in computers (that had been used since the early 1950s). Magnetic core memory replaced a variety of other forms of memory (e.g. Williams tube CRT memory, selectron tube memory, flood gun CRT memory, mercury delay line memory, magnetostrictive delay line memory, rotating magnetic drum memory, long shift register memory) used by earlier computers. Computer memory (of any type) serves the function of storing instructions and data inside the computer that it will need frequent and rapid access to.
The magnetic drum calculator was the first general purpose computer developed in 1953. It is also called The IBM 650.
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There is no such thing as a "snar" drum.