Hayes AT Command Set: The Modem Language That Shaped Early Internet

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The Hayes AT command set is a standardized language developed to control dial-up modems during the early era of personal computing. Originally created by Hayes Microcomputer Products, the command set allowed computers to instruct modems to dial, hang up, and configure connections. The 'AT' prefix, short for 'attention,' preceded each command sent to the modem. Despite the decline of dial-up internet, the AT command set remains relevant today, still used in mobile and embedded communications devices.

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