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引言当前,打印控制器中,已普遍采用各种微处理器作为控制元件。应用微处理器带来的好处是十分显著的,它包括:提高了打印机的性能和质量,节省了硬件和功耗,缩小了整机的体积,降低了成本,增加了打印机和中央机工作的并行性和接口的灵活性等。作为一种尝试,在设计我厂生产的CYD-24B打印机控制器时,我们采用了四位微控制器COP 402作为主控器件,获得了满意的结果。CYD-24B是为我厂生产的DJS-050微型机配套设计的一种小型多字符打印机,其特点是体积小,可打印64种ASCII码字符,适合小型机和微型机配套使用。但它原来的控制器是由中小规模P-MOS组合逻辑电路构成,因而体积大、可靠性差、成本也高,这使得CYD-24B
Introduction Currently, a variety of microprocessors have been commonly used as control elements in print controllers. The benefits of using microprocessors are significant, including: improved performance and quality of the printer, reduced hardware and power consumption, reduced overall size, lower costs and increased printer and central machine workload Parallelism and interface flexibility. As an attempt, we designed the CYD-24B printer controller manufactured by our factory and used the four-bit microcontroller COP 402 as the master device to get satisfactory results. CYD-24B is a small multi-character printer designed for our DJS-050 microcomputer. It is small in size and can print 64 ASCII characters, which is suitable for the use of minicomputers and minicomputers. But its original controller is composed of small and medium-sized P-MOS combinational logic circuit, so bulky, poor reliability, high cost, which makes the CYD-24B