| 摘要 |
PURPOSE: A circuit for stabilizing a printer sharing apparatus using a telephone line is provided to prevent a malfunction of the apparatus when a computer is turned on and booted, and force a CPU of the apparatus not to be initialized when the computer is turned off, by connecting a printer port of the computer to the CPU. CONSTITUTION: A terminal of a printer port is connected to a reset line of a CPU(4) in a transmission printer sharing apparatus(1) coupled with each computer. The pins of a connector(5) which connects the computer to the apparatus(1), is coupled with a condenser as a bypass element in parallel, and then connected to an input terminal of an AND gate. The connector(5) is connected to an input terminal of another AND gate(3) in parallel. A terminal(STRB) of the connector(5) is also connected to the AND gate. An output terminal of the AND gate is connected to an input terminal of the AND gate.
|
