18-pin package
The 8008’s 18-pin package, (used for Intel’s 1103 DRAM chip) reduced our manufacturing costs of this CPU chip, but customer systems containing the 8008 required a handful of chips surrounding it to interface to memory systems. The costs of these extra chips, the added assembly costs, and printed circuit board space for these chips probably were a net deficit compared with the cost savings of the cheaper CPU package itself. Additionally, having only 18 pins to bring out a 14-bit address and an 8-bit data bus required time division multiplexing of the 18 pins, and slowed the processor. However, by the mid- 1970s, calculator chips were coming into high-volume production, and there was an abun-ance of 40-pin packages available that would benefit a single-chip CPU if it were redesigned with a bigger package.
18-pin packageThe 8008’s 18-pin package, (used for Intel’s 1103 DRAM chip) reduced our manufacturing costs of this CPU chip, but customer systems containing the 8008 required a handful of chips surrounding it to interface to memory systems. The costs of these extra chips, the added assembly costs, and printed circuit board space for these chips probably were a net deficit compared with the cost savings of the cheaper CPU package itself. Additionally, having only 18 pins to bring out a 14-bit address and an 8-bit data bus required time division multiplexing of the 18 pins, and slowed the processor. However, by the mid- 1970s, calculator chips were coming into high-volume production, and there was an abun-ance of 40-pin packages available that would benefit a single-chip CPU if it were redesigned with a bigger package.
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