What is an io device

io device refers to the input/output (Input/Output) device, which is one of the key external devices of the data processing system and can be used interactively with the computer body. The most common I/O devices include printers, keyboards, mice, writing pads, microphones, speakers, monitors, etc.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

io device refers to the input and output (Input/Output) device.

Input/Output (Input /Output, referred to as I/O) refers to the data transmission process that occurs between all operations, programs or devices and the computer.

Input/output device refers to the hardware that can transmit data with the computer. It is one of the key external devices of the data processing system and can be used interactively with the computer body. Such as: keyboard, writing board, microphone, stereo, monitor, etc. Therefore, input and output devices serve as a link between humans and machines.

Input device is a device that inputs data and information to the computer. It is a bridge for communication between the computer and the user or other devices. It is one of the main devices for information exchange between the user and the computer system. The task of the input device is to transmit data, instructions and certain sign information to the computer.

Output devices represent the results or intermediate results of calculation or processing in various forms that humans can recognize, such as numbers, symbols, letters, etc. Therefore, input and output devices serve as a link between humans and machines. role. Common ones include monitors, printers, plotters, image output systems, voice output systems, magnetic recording equipment, etc.

According to the transmission speed, IO devices can be divided into three categories.

1. Low-speed device

A type of device with a transmission rate of several bytes to hundreds of bytes per second. Typical devices that are low-speed devices include keyboard, mouse, voice output and output, etc.

2. Medium-speed equipment

This refers to a type of equipment whose transmission rate ranges from thousands of bytes to tens of thousands of bytes per second. Typical medium-speed equipment has printer, laser printer, etc.

3. High-speed equipment

This refers to a type of equipment whose transmission rate ranges from hundreds of kilobytes to gigabytes. Typical high-speed devices include tape drives, magnetic disk drives, optical disk drives, etc.

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