PC Keyboard and Mouse Interfaces 1981 to 2025
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[Synopsis]
In this video, I show you various keyboard and mouse interfaces from 1981 to 2025. The first keyboard interface for the PC was AT. For mice, they used 9 pin serial ports from 1984 up to the late 1990s. You also had bus mice, which was released in 1989. Most computers didn't have a dedicated port for a mouse from 1981 to 1989, so the bus mouse was developed by Microsoft. You needed a spare 8 bit ISA slot in your computer to use it. You also had to install a driver get this bus mouse to work. The Microsoft bus mouse came with the mouse, ISA card, a manual, and the driver in a 5.25" floppy disk. All of this cost about $100 back in 1990.
In 1994 when I got a Pentium 100 MHz, that computer came with two PS/2 ports. One was for the mouse and the other was for the keyboard. For those that had AT keyboards, there was a AT to PS/2 adapter which allowed you to use a AT keyboard in a PS/2 port.
In the late 1990s, I got a Microsoft PS/2 mouse and keyboard. I used that PS/2 keyboard from 1997 to 2013 which was the longest time I used a keyboard. As for mice, I transitioned to a USB optical mouse in 2002. From that point, I always used USB optical mice. More modern USB optical mice having better DPI(dots per inch). PS/2 ball mice wasn't good enough after faster processors came out, like the Pentium IV series. Screen resolutions got higher with more powerful processors, so you needed higher resolution mice. As for keyboards, the technology for those items didn't change much.
In 2014, I got my first USB mechanical keyboard, and I got another one in 2015. Both have problems and I threw one away, and I put the other away in storage. Today, I use USB membrane keyboards, and they are still working despite having them for over 10 years. I never had to replace any of these even though the price of very inexpensive.
The quality of keyboards have gone down over the years, and they have become disposable items. The same can be said with modern mice, they aren't as durable as the ones made in the early 2000s,. and the 1990s. I still have a Logitech mouse from 1997, and it still works! The Logitech gaming mice I bought in 2018 are all broken despite having a lot of money for them.
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