| 摘要 |
A scanner includes a microprocessor for controlling operation of the scanner, and an interface circuit, which connects the microprocessor to a host computer and transfers data from the microprocessor to the host computer. Interface apparatus provides an interface between the scanner interface circuit and a personal computer, permitting the personal computer to act as a host. The interface apparatus includes a printed circuit board, output means, mounted on the printed circuit board, for transmitting data from the personal computer to the scanner interface circuit under control of an output strobe signal, and input means, also mounted on the printed circuit board, for transmitting data from the scanner interface circuit to the personal computer under control of an input strobe signal. The interface apparatus further includes an address means, mounted on the printed circuit board, for providing the output and input strobe signals to the output means and the input means, respectively.
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