half duplex

简明释义

半双工

英英释义

例句

1.In a half duplex 半双工 network, devices can send and receive data, but not simultaneously.

在半双工 半双工网络中，设备可以发送和接收数据，但不能同时进行。

2.In a walkie-talkie system, communication is typically done in half duplex 半双工, meaning one person speaks while the other listens.

在对讲机系统中，通信通常是在半双工 半双工模式下进行的，这意味着一个人说话而另一个人倾听。

3.When using a half duplex 半双工 connection, you need to take turns speaking to avoid confusion.

使用半双工 半双工连接时，您需要轮流发言以避免混淆。

4.The half duplex 半双工 mode of operation is common in radio communications where only one party can transmit at a time.

在无线电通信中，半双工 半双工工作模式很常见，因为一次只能有一个方可以发送信息。

5.Many two-way radios operate in half duplex 半双工, allowing for clear communication without interference.

许多对讲机在半双工 半双工模式下运行，允许清晰的通信而不干扰。

作文

In the realm of communication systems, understanding various modes of data transmission is crucial for efficient information exchange. One such mode is half duplex, which allows data transmission in both directions, but not simultaneously. This means that while one device is sending a message, the other must wait until the first device has finished before it can respond. This is in contrast to full duplex systems, where data can be sent and received at the same time. The concept of half duplex is prevalent in many everyday technologies, including walkie-talkies and certain types of computer networks.To illustrate the functionality of half duplex, consider a simple conversation between two people using a walkie-talkie. When one person presses the button to speak, their voice is transmitted to the other person. However, during this time, the second person cannot speak back; they must wait until the first person releases the button. This method of communication is efficient in its own right, as it minimizes the chance of overlapping signals, which can lead to confusion. However, it also introduces a delay in response time, as both parties must take turns to communicate.The application of half duplex is not limited to personal communication devices. In networking, half duplex can be observed in older Ethernet systems, where devices share a single communication channel. In such cases, only one device can transmit data at a time, necessitating a protocol to manage access to the channel. This is often achieved through methods like Carrier Sense Multiple Access with Collision Detection (CSMA/CD), which helps prevent data collision by ensuring that devices listen before they send.While half duplex systems have their advantages, they also come with limitations. The primary drawback is the potential for increased latency in communication. Since devices must wait their turn to send data, this can slow down the overall speed of communication, especially in scenarios where quick responses are essential, such as in online gaming or real-time collaboration tools. Moreover, as technology advances, the demand for faster and more efficient communication methods has led to a decline in the use of half duplex systems in favor of full duplex alternatives.Nevertheless, half duplex remains an important concept to understand, particularly in specific applications where its characteristics are beneficial. For instance, in environments with limited bandwidth or where simplicity is key, half duplex can provide a straightforward solution for effective communication. Additionally, in scenarios where devices need to conserve power, half duplex can be advantageous, as devices can enter a low-power state while waiting to transmit.In conclusion, the term half duplex refers to a communication mode that allows data transfer in both directions but restricts simultaneous transmission. While it may not be as widely used as full duplex systems in modern technology, its applications in walkie-talkies, older network systems, and specific scenarios highlight its relevance. Understanding half duplex helps us appreciate the evolution of communication technologies and their impact on how we connect and interact with one another.

在通信系统领域，理解各种数据传输模式对于高效的信息交换至关重要。其中一种模式是半双工，它允许数据在两个方向上传输，但不能同时进行。这意味着当一个设备正在发送消息时，另一个设备必须等到第一个设备完成后才能响应。这与全双工系统形成对比，后者可以同时发送和接收数据。半双工的概念在许多日常技术中很常见，包括对讲机和某些类型的计算机网络。为了说明半双工的功能，考虑两个人使用对讲机进行简单对话。当一个人按下按钮说话时，他们的声音被传输给另一个人。然而，在此期间，第二个人无法回应；他们必须等到第一个人松开按钮。这种通信方式在自身的效率上是合理的，因为它最小化了信号重叠的机会，这可能导致混淆。然而，它也引入了响应时间的延迟，因为双方必须轮流进行交流。半双工的应用并不仅限于个人通信设备。在网络中，半双工可以在旧的以太网系统中观察到，其中设备共享单一的通信通道。在这种情况下，只有一个设备可以同时传输数据，因此需要一种协议来管理对通道的访问。这通常通过如载波侦听多路访问与碰撞检测（CSMA/CD）等方法实现，该方法通过确保设备在发送之前先进行监听来帮助防止数据碰撞。尽管半双工系统有其优势，但它们也存在局限性。主要缺点是通信延迟的潜在增加。由于设备必须等待轮到自己发送数据，这可能会减慢整体通信速度，特别是在快速响应至关重要的场景中，例如在线游戏或实时协作工具。此外，随着技术的进步，对更快和更高效的通信方法的需求导致了半双工系统的使用下降，取而代之的是全双工替代品。尽管如此，理解半双工仍然是重要的，特别是在特定应用中，其特征是有益的。例如，在带宽有限或简单性为关键的环境中，半双工可以提供一种有效沟通的简单解决方案。此外，在设备需要节省电力的场景中，半双工也可能是有利的，因为设备可以在等待传输时进入低功耗状态。总之，术语半双工指的是一种通信模式，允许双向数据传输，但限制同时传输。虽然在现代技术中，它的使用可能不如全双工系统广泛，但它在对讲机、旧网络系统和特定场景中的应用突显了其相关性。理解半双工有助于我们欣赏通信技术的发展及其对我们彼此连接和互动的影响。