MVME340 Motorola I/O模块  SCSI总线接口

MVME340是摩托罗拉的一款VME并行I/O模块，具有浮点协处理器的25MHz MC68040微处理器，4MB DRAM，128KB SRAM，2个IndustryPack端口，1个BIOS芯片，以太网收发器接口，具有32位本地总线突发DMA的SCSI总线接口。

I/O（Input/Output）是指输入/输出，通常是指与计算机系统进行交互的外部设备或网络接口。在计算机系统中，I/O操作是必不可少的，因为计算机需要从外部设备获取数据（输入），并将处理后的数据发送到外部设备（输出）。例如，键盘、鼠标、显示器、打印机等都是常见的输入输出设备。网络接口也可以看作是一种I/O设备，用于实现计算机之间的数据传输。

MVME340 I/O模块是可以与主机之间采用串行通信协议进行数据交换的设备，可以将输入信号转换到计算机能够识别的二进制电信号。

MVME340 I/O模块的作用是实现输入输出功能，对不同输入输出方式（包括磁盘文件、网络、标准输入输出等）进行抽象处理，使用户无需关心底层的I/O细节，从而使得I/O操作更加方便、简单、快捷。

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MVME340 Motorola I/O模块  SCSI总线接口

MVME340 is a VME parallel I/O module from MOTOROLA, with a floating point coprocessor of 25MHz MC68040 microprocessor, 4MB DRAM, 128KB SRAM, 2 IndustryPack ports, 1 BIOS chip, Ethernet transceiver interface. SCSI bus interface with 32-bit local bus burst DMA.

I/O (Input/Output) refers to the input/output, usually refers to the external device or network interface that interacts with the computer system. In computer systems, I/O operations are essential because the computer needs to obtain data from external devices (input) and send processed data to external devices (output). For example, keyboards, mice, monitors, printers, etc., are common input and output devices. A network interface can also be seen as an I/O device that enables data transfer between computers.

The MVME340 I/O module is a device that can exchange data with the host using a serial communication protocol, and can convert the input signal to a binary electrical signal that the computer can recognize.

The function of the MVME340 I/O module is to realize the input and output function, and abstract the different input and output modes (including disk files, network, standard input and output, etc.), so that the user does not need to care about the underlying I/O details, so that the I/O operation is more convenient, simple and fast.

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