Keyboard and mouse ports may be combined into a single port which can be used to connect both by splitter cable. Today it’s not at all uncommon for a computer to have six or more USB ports, so you can connect a lot more to a computer today than you could in the PS/2 days. Is there any advantage to PS/2?

Pressing down A followed by S (make code 0x1B) the make code of A is repeated until S is pressed. From then on the make code S is repeated.I planned this project for quite some time and had many ideas. One of those might be a better fit for your project. So it won't hurt to mention them:

Windows 10 works just fine with PS/2 keyboards. I use PS/2 keyboards with at least two of my Windows 10 systems all the time. I’ve never had any problems with them. Do PS/2 keyboards require drivers? Because a keyboard should work without installing any additional software, there isn't anything that can be reinstalled or uninstalled. If your keyboard is not working or recognized, try disconnecting the cable from the computer and reconnecting the cable. If this does not help or reset the keyboard, see the following links.

Yes. All PC keyboards can be plugged into an Apple computer, and macOS will remap the modifier keys to work with the operating system. However, realize that although you have a PC keyboard connected, the Microsoft Windows keyboard shortcuts do not work with macOS. Also, if the keyboard has special keys or functions, they may not all work or activate with macOS. How to reinstall a keyboard

Your computer is perfectly capable to emulate some stupid interface. And the very first big computers, the modern day servers and the tiny microcontrollers have one thing in common. In many cases they don't feature such nice input and output devices as your computer. So it's attractive to connect them to your computer. An amazing way to solve all the PS4 keyboard issues that occur during usage is to run the hardware troubleshooter. The troubleshooting method helps in solving the problems and making the keyboard work again. and it is a number, the 8 byte number buffer is searched for the number, if it isn't there it will be added Today, keyboards more commonly use USB than PS/2. The only real problem with PS/2 was the keyboard and mouse connectors looked exactly the same, but they weren’t interchangeable. If you plugged the keyboard into the mouse port and the mouse into the keyboard port, it wouldn’t hurt anything, but neither of them would work, either. That was a bit frustrating. Eventually, computer makers started color-coding the ports to make it easier. So what did I learn? The keyboard detected up to 6 keys at a time. A keyboard error occurred - that might explain why there is a break code for R but no make code. Overall 7 out of the 8 keys are listed. I got no n-key rollover (all keys can be scanned independently) but that was expected. The keyboard was cheap. But I got multi-key rollover. The keyboard should be able to read more than 2 keys in common combinations. That's a lot better than 2 key rollover. For this reason I made a 8 byte buffer to store the keys currently pressed. If there are constellations where the keyboard can recognize more keys, than 8 I can live with my uC being more forgetful than the keyboard. I can't think of a meaningful input with more than 8 keys in a uC-application. Even more so, if you have first to try out, if the keyboard in use can even recognize those 8 specific keys at the same time. And when ever needed it is no trouble to increase the buffer.it would have been the fastest, easiest and cheapest way to get my project done, but it was just not what I wanted

by reading in information in parallel on a signal and reading it to the uC in serial afterwards, you can increase the number of inputs Set 2 seems to be the most common and is the only one I needed by now. I also only needed "normal" keys so I ignored the characteristics of Pause. The rules I implemented are:While there were some slight advantages to using USB for the mouse instead of PS/2, there’s no real difference with the keyboards. The USB port is just more versatile. The PS/2 interface provides no restriction on key rollover, although USB keyboards have no such restriction either, unless operated in BOOT mode, which is the exception. Sometimes you’ll hear references to a PS2 keyboard, or, more properly, a PS/2 keyboard. It’s an old standard, and a fair number of newer computers can’t use them anymore. But what is a PS2 keyboard? And if it was good enough to last so long, why did it go away? If they are hot swapped, the devices must be similar enough that the driver running on the host system recognizes and can be used with the new device. Otherwise, the new device will not function properly. While this is seldom an issue with standard keyboard devices, the host system rarely recognizes the new device attached to the PS/2 mouse port. In practice most keyboards can be hot swapped but this should be avoided.