The Hayes SmartModem is a family of smart Modems advanced via Hayes Microcomputer Products that took the Laptop international by way of storm in 1981. It allowed for the Interconnection of lots of Computer enthusiasts, a Range of that become considered surprising at that point, via Online bulletin boards (BBS) and on line consumer Networks (USENETs) which include CompuServe. The Smartmodem was a chief step inside the right course as modems previous to it had been steeply-priced and really slow.
The Hayes Smartmodem cHanged into the brainchild of Dennis Hayes and Dale Heatherington, who were both pissed off with expensive and slow modems that communicated over Analog strains at three hundred bps, that is properly below reading pace. These modems also used cumbersome Acoustic Couplers that required the person to dial a unique quantity on a Cellphone and then area the Handset into ports on pinnacle of the modem. Their answer to this trouble is the Smartmodem, an clever modem that used a Z8 Microprocessor at its Coronary heart and communicated to the pc via the industry RS-232 Serial Port widespread, some thing which all Computer Systems at the time had. It may be programmed to answer calls and dial numbers routinely via simple String manipulate Characters via the serial port. Another massive distinction is the fee point — they bought it at only $299, and it speedy have become the enterprise widespread.
The Hayes Smartmodem has two States: Command and online states. In the command nation, the modem interprets facts coming from the Computer as commands so that it is able to be inFormed to reply calls, cling up or dial numbers. Online or statistics mode was the usual modem mode where statistics coming from the pc is modulated and desPatched over the road, whilst received statistics is demodulated and despatched to the pc.
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