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The 1-bit-per-chip organization has several advantages. It requires fewer pins on the package (only one data out line); therefore, a higher density of bits can be achieved for a given size package. Also, it is somewhat more reliable because it has only one output driver. These benefits have led to the traditional use of 1-bit-per chip for RAM. In most cases, ROMs are much smaller than RAMs and it is often possible to get an entire ROM on one or two chips if a multiple-bits-per-chip organization is used. This saves on cost and is sufficient reason to adopt that organization.

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