![]() The function of this microprocessor is to provide a central mechanism for the entire printer by executing the control program through the LSI and driver circuits. 8-bit parallel port × 3 (bitwise I/O specification available). ![]() The following characteristics are also provided: It is capable of accessing up to 1M word program memory and 1M bytes of data memory. The processor has a 20 bit address bus and a 16 bit data bus. This processor is a CMOS single-chip computer with integrated peripheral device functions and a 16 bit MPU core, all OKI original architecture. ![]() The power to other electrical parts is also distributed through the connectors within the control board.Ģ.1.2 Microprocessor and the Peripheral Circuit The power to the control board is supplied by the power board through the connector cord. The control board is made up of the microprocessors, peripheral circuits, drive circuits, sensors and interface connectors. ![]() 2-1 shows the block diagram of the printer. The electrical operation of the printer circuit is described in this section.įig.
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