But trust me, if you have a look at PS2 vs USB latency, the USB latency is not noticeable. Thus, in real-world circumstances, PS2 seems to be better than USB. As he himself is giving you the update, by distracting you from the work, it is similar to PS2. This is similar to the USB interface.īut if he can communicate with you after the work is done at 11 PM, he will not sit idle. But he will sit idle till 9 PM the next day, as it is only you who can take the update of the work the next day. In such a case, let me consider, you assigned work to him at 9 PM today. But he himself cannot communicate with you to give the updates. You told him that you will ask for the job update every day at 9 PM. Just consider, you have assigned work to your friend. Systems being very fast nowadays, the interrupts causing slowdowns are hardly noticeable. The question might come to your mind, shouldn’t interruptions slow down the processor? But that doesn’t happen. Thus, PS2 is theoretically quicker if compared to its USB counterparts. Do the tasks and then get back to your work. But if your mom calls you, you should respond to it first. It is like, you might be doing some work. Interrupts force the processor to register the actions of the mice and keyboard, keeping other activities apart. Thus, once you press any key or use the mice, it trigger interrupts for the processor. It takes place from the keyboard or mice to the system. The PS2 is an interface, where the transfer takes place in a single direction. But processors today are very fast, and thus, there isn’t any noticeable lag. For example, if you are pressing a button, that will remain unregistered unless the system asks for the state of the keyboard. The keyboards and mice then send relevant signals depending on the state. The system asks for the state of keyboards and mice after a few Nano-seconds. In USB keyboards and mice, the devices talk to the computer at certain intervals. USB is an interface, where data transfer can take place in both directions. If you are not an expert in making out some complicated technical jargon, I will explain everything in simple and day-to-day terms. Without spending time overrating either USB or PS2, it is worth knowing how they actually function. Advantages of USB over PS2 The way they work
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