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I have an old keyboard that has ps/2 interface. I have a ttl(V G tx rx) to usb converter too. Can i use this converter to connecting my keyboard to USB port? What about RS232/RS485 to USB converter? Can i use that to this convertion and connection?

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closed as off-topic by Voltage Spike, Adam Haun, ThreePhaseEel, brhans, uint128_t Dec 11 '16 at 0:10

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design." – Adam Haun, ThreePhaseEel, brhans, uint128_t
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I have a ttl(V G tx rx) to usb converter too. Can i use this converter to connecting my keyboard to USB port?

No.

What about RS232/RS485 to USB converter? Can i use that to this convertion and connection?

No.

The PS/2 keyboard interface is different to those on the converters / adapters you mentioned. However there are commercially-available PS/2 to USB converters available, if that is what you want to do.

Here is an example of one of those commercially-available converters from a randomly-picked supplier's website, to give you an idea of what they can look like:

example random photo of PS/2 keyboard & mouse to USB host converter
Source

Or, if you wanted to start a project, you could design your own converter using an MCU with a USB interface. This will be much easier if you choose an MCU where there are USB HID-class examples already available.

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