Compute!'s telecomputing on the Commodore 64 by COMPUTE

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Sample text

This circuit is used only to indicate the status of the mo dem at your end of the connection. The on condition should not be interpreted as either an indication that a communica tion channel has been established to a remote terminal or the status of any remote terminal. Off will appear at all other times and will indicate that the modem is off or, in the case of an autoanswer modem, is dis regarding signals appearing on any line other than Ring In dicator. The off condition will not impair the operation of Ring Indicator or Data Terminal Ready.

The on condition of this signal indicates that a ringing signal is being received on the commu nication channel. Data Signal Rate Selector (Pin 23). Signals on this circuit are used to select between the two data signaling rates in the case of dual-rate synchronous data sets or the two ranges of data signaling rates in the case of dual-range asynchronous data sets. Transmit Signal Element (Pin 24). Used in synchronous communications; signals on this circuit provide the transmit ting data set with signal element timing information.

Suppose Steve is a frequent user of the Just Folks Information Service. Steve calls only during the evening (referred to as nonprime time by the commercial information services) and spends about five hours a month on Just Folks with his 300 bps modem. 00 an hour surcharge for 1200 bps, nonprime-time access. 00. 25. The money Steve saves in a year would pay for a brand-new 1200 bps modem! The Point of Diminishing Returns Admittedly, this is an ideal case. It assumes that armed with a 1200 bps modem, Steve will stay online only one quarter of the time that he would with his 300 bps unit.

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